feat(issues): index merge request mentions of issues and close linked issues on merge

commit: 1386983084dffedfbd09ffc15d0fc5a3a880c317
author: brice · 46h ago · 2026-10-20 15:10 UTC
parent: 8a27537
signature: GPG VerifiedCD88F9E564E0102646FB6077A1A07C7C7C3E349D · arch-gpg Verified for the committer email

9 files · +705 -9

M internal/app/forge.go +4 -2


@@ -363,15 +363,17 @@ func newForge(ctx context.Context, cfg config.Config, opts options) (_ *forge, e
363	363		Store: store.MergeRequests(), Meta: store, Git: git, Bus: f.Bus, Clock: clock,
364	364		})
365	365		f.Pushes.WithMergeability(f.Mergeability)
	366	+	links := usecase.NewIssueLinks(usecase.IssueLinksConfig{Meta: store, Issues: store.Issues(), MRs: store.MergeRequests(), Links: store.IssueLinks(), Git: git, Bus: f.Bus, Clock: clock})
	367	+	f.Pushes.WithIssueLinks(links)
366	368		f.MergeRequests = usecase.NewMergeRequests(usecase.MergeRequestsConfig{
367		-	Meta: store, Store: store.MergeRequests(), Repos: git, Git: git, Signer: signer,
	369	+	Links: links, Meta: store, Store: store.MergeRequests(), Repos: git, Git: git, Signer: signer,
368	370		Committer: committer, Bus: f.Bus, Clock: clock, Maint: f.maint,
369	371		CI: f.CI, Checks: f.CI, PullRequests: f.CI, RefTips: store.CI(), Mergeability: f.Mergeability,
370	372		})
371	373		f.Mergeability.Start()
372	374		f.MergeRequests.WithVerifier(f.Signatures).WithMirror(f.Mirrors)
373	375		f.Issues = usecase.NewIssues(usecase.IssuesConfig{
374		-	Meta: store, Store: store.Issues(), MergeRequests: store.MergeRequests(), Bus: f.Bus, Clock: clock,
	376	+	Links: store.IssueLinks(), Meta: store, Store: store.Issues(), MergeRequests: store.MergeRequests(), Bus: f.Bus, Clock: clock,
375	377		})
376	378		f.IssueModeration = usecase.NewIssueModeration(usecase.IssueModerationConfig{
377	379		Meta: store, Pending: store.PendingIssues(), Bans: store.IssueBans(), Bus: f.Bus, Clock: clock,

 		Store: store.MergeRequests(), Meta: store, Git: git, Bus: f.Bus, Clock: clock,
 	})
 	f.Pushes.WithMergeability(f.Mergeability)
+	links := usecase.NewIssueLinks(usecase.IssueLinksConfig{Meta: store, Issues: store.Issues(), MRs: store.MergeRequests(), Links: store.IssueLinks(), Git: git, Bus: f.Bus, Clock: clock})
+	f.Pushes.WithIssueLinks(links)
 	f.MergeRequests = usecase.NewMergeRequests(usecase.MergeRequestsConfig{
-		Meta: store, Store: store.MergeRequests(), Repos: git, Git: git, Signer: signer,
+		Links: links, Meta: store, Store: store.MergeRequests(), Repos: git, Git: git, Signer: signer,
 		Committer: committer, Bus: f.Bus, Clock: clock, Maint: f.maint,
 		CI: f.CI, Checks: f.CI, PullRequests: f.CI, RefTips: store.CI(), Mergeability: f.Mergeability,
 	})
 	f.Mergeability.Start()
 	f.MergeRequests.WithVerifier(f.Signatures).WithMirror(f.Mirrors)
 	f.Issues = usecase.NewIssues(usecase.IssuesConfig{
-		Meta: store, Store: store.Issues(), MergeRequests: store.MergeRequests(), Bus: f.Bus, Clock: clock,
+		Links: store.IssueLinks(), Meta: store, Store: store.Issues(), MergeRequests: store.MergeRequests(), Bus: f.Bus, Clock: clock,
 	})
 	f.IssueModeration = usecase.NewIssueModeration(usecase.IssueModerationConfig{
 		Meta: store, Pending: store.PendingIssues(), Bans: store.IssueBans(), Bus: f.Bus, Clock: clock,

M internal/ports/dto.go +12 -2


@@ -242,9 +242,19 @@ type CreateIssueParams struct {
242	242		Body string
243	243		}
244	244
245		-	// IssueDetail is an issue with its comments.
	245	+	// IssueReference is a merge request of the same repository naming an issue.
	246	+	type IssueReference struct {
	247	+	Number int64
	248	+	Title domain.MRTitle
	249	+	State domain.MRState
	250	+	Closes bool
	251	+	}
	252	+
	253	+	// IssueDetail is an issue with its comments and referencing merge requests.
246	254		type IssueDetail struct {
247		-	Issue domain.Issue
	255	+	// References are ascending by number, at most 100.
	256	+	References []IssueReference
	257	+	Issue domain.Issue
248	258		// Comments are oldest first.
249	259		Comments []domain.IssueComment
250	260		}


@@ -242,9 +242,19 @@ type CreateIssueParams struct {
242		Body string	242		Body string
243		}	243		}
244			244
245	-	// IssueDetail is an issue with its comments.	245	+	// IssueReference is a merge request of the same repository naming an issue.
			246	+	type IssueReference struct {
			247	+	Number int64
			248	+	Title domain.MRTitle
			249	+	State domain.MRState
			250	+	Closes bool
			251	+	}
			252	+
			253	+	// IssueDetail is an issue with its comments and referencing merge requests.
246		type IssueDetail struct {	254		type IssueDetail struct {
247	-	Issue domain.Issue	255	+	// References are ascending by number, at most 100.
			256	+	References []IssueReference
			257	+	Issue domain.Issue
248		// Comments are oldest first.	258		// Comments are oldest first.
249		Comments []domain.IssueComment	259		Comments []domain.IssueComment
250		}	260		}

A internal/ports/mocks/IssueLinkTrigger.go +262 -0

@@ -0,0 +1,262 @@
	1	+	// Code generated by mockery; DO NOT EDIT.
	2	+	// github.com/vektra/mockery
	3	+	// template: testify
	4	+
	5	+	package mocks
	6	+
	7	+	import (
	8	+	"context"
	9	+
	10	+	"bnema.dev/ermite/internal/domain"
	11	+	mock "github.com/stretchr/testify/mock"
	12	+	)
	13	+
	14	+	// NewIssueLinkTrigger creates a new instance of IssueLinkTrigger. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
	15	+	// The first argument is typically a *testing.T value.
	16	+	func NewIssueLinkTrigger(t interface {
	17	+	mock.TestingT
	18	+	Cleanup(func())
	19	+	}) *IssueLinkTrigger {
	20	+	if helper, ok := t.(interface{ Helper() }); ok {
	21	+	helper.Helper()
	22	+	}
	23	+
	24	+	mock := &IssueLinkTrigger{}
	25	+	mock.Mock.Test(t)
	26	+
	27	+	t.Cleanup(func() {
	28	+	if helper, ok := t.(interface{ Helper() }); ok {
	29	+	helper.Helper()
	30	+	}
	31	+	mock.AssertExpectations(t)
	32	+	})
	33	+
	34	+	return mock
	35	+	}
	36	+
	37	+	// IssueLinkTrigger is an autogenerated mock type for the IssueLinkTrigger type
	38	+	type IssueLinkTrigger struct {
	39	+	mock.Mock
	40	+	}
	41	+
	42	+	type IssueLinkTrigger_Expecter struct {
	43	+	mock *mock.Mock
	44	+	}
	45	+
	46	+	func (_m IssueLinkTrigger) EXPECT() IssueLinkTrigger_Expecter {
	47	+	return &IssueLinkTrigger_Expecter{mock: &_m.Mock}
	48	+	}
	49	+
	50	+	// OnBranchesMoved provides a mock function for the type IssueLinkTrigger
	51	+	func (_mock *IssueLinkTrigger) OnBranchesMoved(context1 context.Context, repoName domain.RepoName, refUpdates []domain.RefUpdate) {
	52	+	_mock.Called(context1, repoName, refUpdates)
	53	+	return
	54	+	}
	55	+
	56	+	// IssueLinkTrigger_OnBranchesMoved_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'OnBranchesMoved'
	57	+	type IssueLinkTrigger_OnBranchesMoved_Call struct {
	58	+	*mock.Call
	59	+	}
	60	+
	61	+	// OnBranchesMoved is a helper method to define mock.On call
	62	+	// - context1 context.Context
	63	+	// - repoName domain.RepoName
	64	+	// - refUpdates []domain.RefUpdate
	65	+	func (_e IssueLinkTrigger_Expecter) OnBranchesMoved(context1 any, repoName any, refUpdates any) IssueLinkTrigger_OnBranchesMoved_Call {
	66	+	return &IssueLinkTrigger_OnBranchesMoved_Call{Call: _e.mock.On("OnBranchesMoved", context1, repoName, refUpdates)}
	67	+	}
	68	+
	69	+	func (_c IssueLinkTrigger_OnBranchesMoved_Call) Run(run func(context1 context.Context, repoName domain.RepoName, refUpdates []domain.RefUpdate)) IssueLinkTrigger_OnBranchesMoved_Call {
	70	+	_c.Call.Run(func(args mock.Arguments) {
	71	+	var arg0 context.Context
	72	+	if args[0] != nil {
	73	+	arg0 = args[0].(context.Context)
	74	+	}
	75	+	var arg1 domain.RepoName
	76	+	if args[1] != nil {
	77	+	arg1 = args[1].(domain.RepoName)
	78	+	}
	79	+	var arg2 []domain.RefUpdate
	80	+	if args[2] != nil {
	81	+	arg2 = args[2].([]domain.RefUpdate)
	82	+	}
	83	+	run(
	84	+	arg0,
	85	+	arg1,
	86	+	arg2,
	87	+	)
	88	+	})
	89	+	return _c
	90	+	}
	91	+
	92	+	func (_c IssueLinkTrigger_OnBranchesMoved_Call) Return() IssueLinkTrigger_OnBranchesMoved_Call {
	93	+	_c.Call.Return()
	94	+	return _c
	95	+	}
	96	+
	97	+	func (_c IssueLinkTrigger_OnBranchesMoved_Call) RunAndReturn(run func(context1 context.Context, repoName domain.RepoName, refUpdates []domain.RefUpdate)) IssueLinkTrigger_OnBranchesMoved_Call {
	98	+	_c.Run(run)
	99	+	return _c
	100	+	}
	101	+
	102	+	// OnMergeRequestChanged provides a mock function for the type IssueLinkTrigger
	103	+	func (_mock *IssueLinkTrigger) OnMergeRequestChanged(context1 context.Context, repo domain.Repo, n int64) {
	104	+	_mock.Called(context1, repo, n)
	105	+	return
	106	+	}
	107	+
	108	+	// IssueLinkTrigger_OnMergeRequestChanged_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'OnMergeRequestChanged'
	109	+	type IssueLinkTrigger_OnMergeRequestChanged_Call struct {
	110	+	*mock.Call
	111	+	}
	112	+
	113	+	// OnMergeRequestChanged is a helper method to define mock.On call
	114	+	// - context1 context.Context
	115	+	// - repo domain.Repo
	116	+	// - n int64
	117	+	func (_e IssueLinkTrigger_Expecter) OnMergeRequestChanged(context1 any, repo any, n any) IssueLinkTrigger_OnMergeRequestChanged_Call {
	118	+	return &IssueLinkTrigger_OnMergeRequestChanged_Call{Call: _e.mock.On("OnMergeRequestChanged", context1, repo, n)}
	119	+	}
	120	+
	121	+	func (_c IssueLinkTrigger_OnMergeRequestChanged_Call) Run(run func(context1 context.Context, repo domain.Repo, n int64)) IssueLinkTrigger_OnMergeRequestChanged_Call {
	122	+	_c.Call.Run(func(args mock.Arguments) {
	123	+	var arg0 context.Context
	124	+	if args[0] != nil {
	125	+	arg0 = args[0].(context.Context)
	126	+	}
	127	+	var arg1 domain.Repo
	128	+	if args[1] != nil {
	129	+	arg1 = args[1].(domain.Repo)
	130	+	}
	131	+	var arg2 int64
	132	+	if args[2] != nil {
	133	+	arg2 = args[2].(int64)
	134	+	}
	135	+	run(
	136	+	arg0,
	137	+	arg1,
	138	+	arg2,
	139	+	)
	140	+	})
	141	+	return _c
	142	+	}
	143	+
	144	+	func (_c IssueLinkTrigger_OnMergeRequestChanged_Call) Return() IssueLinkTrigger_OnMergeRequestChanged_Call {
	145	+	_c.Call.Return()
	146	+	return _c
	147	+	}
	148	+
	149	+	func (_c IssueLinkTrigger_OnMergeRequestChanged_Call) RunAndReturn(run func(context1 context.Context, repo domain.Repo, n int64)) IssueLinkTrigger_OnMergeRequestChanged_Call {
	150	+	_c.Run(run)
	151	+	return _c
	152	+	}
	153	+
	154	+	// OnMergeRequestSettled provides a mock function for the type IssueLinkTrigger
	155	+	func (_mock *IssueLinkTrigger) OnMergeRequestSettled(context1 context.Context, repo domain.Repo, mergeRequest domain.MergeRequest) {
	156	+	_mock.Called(context1, repo, mergeRequest)
	157	+	return
	158	+	}
	159	+
	160	+	// IssueLinkTrigger_OnMergeRequestSettled_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'OnMergeRequestSettled'
	161	+	type IssueLinkTrigger_OnMergeRequestSettled_Call struct {
	162	+	*mock.Call
	163	+	}
	164	+
	165	+	// OnMergeRequestSettled is a helper method to define mock.On call
	166	+	// - context1 context.Context
	167	+	// - repo domain.Repo
	168	+	// - mergeRequest domain.MergeRequest
	169	+	func (_e IssueLinkTrigger_Expecter) OnMergeRequestSettled(context1 any, repo any, mergeRequest any) IssueLinkTrigger_OnMergeRequestSettled_Call {
	170	+	return &IssueLinkTrigger_OnMergeRequestSettled_Call{Call: _e.mock.On("OnMergeRequestSettled", context1, repo, mergeRequest)}
	171	+	}
	172	+
	173	+	func (_c IssueLinkTrigger_OnMergeRequestSettled_Call) Run(run func(context1 context.Context, repo domain.Repo, mergeRequest domain.MergeRequest)) IssueLinkTrigger_OnMergeRequestSettled_Call {
	174	+	_c.Call.Run(func(args mock.Arguments) {
	175	+	var arg0 context.Context
	176	+	if args[0] != nil {
	177	+	arg0 = args[0].(context.Context)
	178	+	}
	179	+	var arg1 domain.Repo
	180	+	if args[1] != nil {
	181	+	arg1 = args[1].(domain.Repo)
	182	+	}
	183	+	var arg2 domain.MergeRequest
	184	+	if args[2] != nil {
	185	+	arg2 = args[2].(domain.MergeRequest)
	186	+	}
	187	+	run(
	188	+	arg0,
	189	+	arg1,
	190	+	arg2,
	191	+	)
	192	+	})
	193	+	return _c
	194	+	}
	195	+
	196	+	func (_c IssueLinkTrigger_OnMergeRequestSettled_Call) Return() IssueLinkTrigger_OnMergeRequestSettled_Call {
	197	+	_c.Call.Return()
	198	+	return _c
	199	+	}
	200	+
	201	+	func (_c IssueLinkTrigger_OnMergeRequestSettled_Call) RunAndReturn(run func(context1 context.Context, repo domain.Repo, mergeRequest domain.MergeRequest)) IssueLinkTrigger_OnMergeRequestSettled_Call {
	202	+	_c.Run(run)
	203	+	return _c
	204	+	}
	205	+
	206	+	// OnMerged provides a mock function for the type IssueLinkTrigger
	207	+	func (_mock *IssueLinkTrigger) OnMerged(context1 context.Context, principal domain.Principal, repo domain.Repo, mergeRequest domain.MergeRequest) {
	208	+	_mock.Called(context1, principal, repo, mergeRequest)
	209	+	return
	210	+	}
	211	+
	212	+	// IssueLinkTrigger_OnMerged_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'OnMerged'
	213	+	type IssueLinkTrigger_OnMerged_Call struct {
	214	+	*mock.Call
	215	+	}
	216	+
	217	+	// OnMerged is a helper method to define mock.On call
	218	+	// - context1 context.Context
	219	+	// - principal domain.Principal
	220	+	// - repo domain.Repo
	221	+	// - mergeRequest domain.MergeRequest
	222	+	func (_e IssueLinkTrigger_Expecter) OnMerged(context1 any, principal any, repo any, mergeRequest any) IssueLinkTrigger_OnMerged_Call {
	223	+	return &IssueLinkTrigger_OnMerged_Call{Call: _e.mock.On("OnMerged", context1, principal, repo, mergeRequest)}
	224	+	}
	225	+
	226	+	func (_c IssueLinkTrigger_OnMerged_Call) Run(run func(context1 context.Context, principal domain.Principal, repo domain.Repo, mergeRequest domain.MergeRequest)) IssueLinkTrigger_OnMerged_Call {
	227	+	_c.Call.Run(func(args mock.Arguments) {
	228	+	var arg0 context.Context
	229	+	if args[0] != nil {
	230	+	arg0 = args[0].(context.Context)
	231	+	}
	232	+	var arg1 domain.Principal
	233	+	if args[1] != nil {
	234	+	arg1 = args[1].(domain.Principal)
	235	+	}
	236	+	var arg2 domain.Repo
	237	+	if args[2] != nil {
	238	+	arg2 = args[2].(domain.Repo)
	239	+	}
	240	+	var arg3 domain.MergeRequest
	241	+	if args[3] != nil {
	242	+	arg3 = args[3].(domain.MergeRequest)
	243	+	}
	244	+	run(
	245	+	arg0,
	246	+	arg1,
	247	+	arg2,
	248	+	arg3,
	249	+	)
	250	+	})
	251	+	return _c
	252	+	}
	253	+
	254	+	func (_c IssueLinkTrigger_OnMerged_Call) Return() IssueLinkTrigger_OnMerged_Call {
	255	+	_c.Call.Return()
	256	+	return _c
	257	+	}
	258	+
	259	+	func (_c IssueLinkTrigger_OnMerged_Call) RunAndReturn(run func(context1 context.Context, principal domain.Principal, repo domain.Repo, mergeRequest domain.MergeRequest)) IssueLinkTrigger_OnMerged_Call {
	260	+	_c.Run(run)
	261	+	return _c
	262	+	}

@@ -0,0 +1,262 @@
	1	+	// Code generated by mockery; DO NOT EDIT.
	2	+	// github.com/vektra/mockery
	3	+	// template: testify
	4	+
	5	+	package mocks
	6	+
	7	+	import (
	8	+	"context"
	9	+
	10	+	"bnema.dev/ermite/internal/domain"
	11	+	mock "github.com/stretchr/testify/mock"
	12	+	)
	13	+
	14	+	// NewIssueLinkTrigger creates a new instance of IssueLinkTrigger. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
	15	+	// The first argument is typically a *testing.T value.
	16	+	func NewIssueLinkTrigger(t interface {
	17	+	mock.TestingT
	18	+	Cleanup(func())
	19	+	}) *IssueLinkTrigger {
	20	+	if helper, ok := t.(interface{ Helper() }); ok {
	21	+	helper.Helper()
	22	+	}
	23	+
	24	+	mock := &IssueLinkTrigger{}
	25	+	mock.Mock.Test(t)
	26	+
	27	+	t.Cleanup(func() {
	28	+	if helper, ok := t.(interface{ Helper() }); ok {
	29	+	helper.Helper()
	30	+	}
	31	+	mock.AssertExpectations(t)
	32	+	})
	33	+
	34	+	return mock
	35	+	}
	36	+
	37	+	// IssueLinkTrigger is an autogenerated mock type for the IssueLinkTrigger type
	38	+	type IssueLinkTrigger struct {
	39	+	mock.Mock
	40	+	}
	41	+
	42	+	type IssueLinkTrigger_Expecter struct {
	43	+	mock *mock.Mock
	44	+	}
	45	+
	46	+	func (_m IssueLinkTrigger) EXPECT() IssueLinkTrigger_Expecter {
	47	+	return &IssueLinkTrigger_Expecter{mock: &_m.Mock}
	48	+	}
	49	+
	50	+	// OnBranchesMoved provides a mock function for the type IssueLinkTrigger
	51	+	func (_mock *IssueLinkTrigger) OnBranchesMoved(context1 context.Context, repoName domain.RepoName, refUpdates []domain.RefUpdate) {
	52	+	_mock.Called(context1, repoName, refUpdates)
	53	+	return
	54	+	}
	55	+
	56	+	// IssueLinkTrigger_OnBranchesMoved_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'OnBranchesMoved'
	57	+	type IssueLinkTrigger_OnBranchesMoved_Call struct {
	58	+	*mock.Call
	59	+	}
	60	+
	61	+	// OnBranchesMoved is a helper method to define mock.On call
	62	+	// - context1 context.Context
	63	+	// - repoName domain.RepoName
	64	+	// - refUpdates []domain.RefUpdate
	65	+	func (_e IssueLinkTrigger_Expecter) OnBranchesMoved(context1 any, repoName any, refUpdates any) IssueLinkTrigger_OnBranchesMoved_Call {
	66	+	return &IssueLinkTrigger_OnBranchesMoved_Call{Call: _e.mock.On("OnBranchesMoved", context1, repoName, refUpdates)}
	67	+	}
	68	+
	69	+	func (_c IssueLinkTrigger_OnBranchesMoved_Call) Run(run func(context1 context.Context, repoName domain.RepoName, refUpdates []domain.RefUpdate)) IssueLinkTrigger_OnBranchesMoved_Call {
	70	+	_c.Call.Run(func(args mock.Arguments) {
	71	+	var arg0 context.Context
	72	+	if args[0] != nil {
	73	+	arg0 = args[0].(context.Context)
	74	+	}
	75	+	var arg1 domain.RepoName
	76	+	if args[1] != nil {
	77	+	arg1 = args[1].(domain.RepoName)
	78	+	}
	79	+	var arg2 []domain.RefUpdate
	80	+	if args[2] != nil {
	81	+	arg2 = args[2].([]domain.RefUpdate)
	82	+	}
	83	+	run(
	84	+	arg0,
	85	+	arg1,
	86	+	arg2,
	87	+	)
	88	+	})
	89	+	return _c
	90	+	}
	91	+
	92	+	func (_c IssueLinkTrigger_OnBranchesMoved_Call) Return() IssueLinkTrigger_OnBranchesMoved_Call {
	93	+	_c.Call.Return()
	94	+	return _c
	95	+	}
	96	+
	97	+	func (_c IssueLinkTrigger_OnBranchesMoved_Call) RunAndReturn(run func(context1 context.Context, repoName domain.RepoName, refUpdates []domain.RefUpdate)) IssueLinkTrigger_OnBranchesMoved_Call {
	98	+	_c.Run(run)
	99	+	return _c
	100	+	}
	101	+
	102	+	// OnMergeRequestChanged provides a mock function for the type IssueLinkTrigger
	103	+	func (_mock *IssueLinkTrigger) OnMergeRequestChanged(context1 context.Context, repo domain.Repo, n int64) {
	104	+	_mock.Called(context1, repo, n)
	105	+	return
	106	+	}
	107	+
	108	+	// IssueLinkTrigger_OnMergeRequestChanged_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'OnMergeRequestChanged'
	109	+	type IssueLinkTrigger_OnMergeRequestChanged_Call struct {
	110	+	*mock.Call
	111	+	}
	112	+
	113	+	// OnMergeRequestChanged is a helper method to define mock.On call
	114	+	// - context1 context.Context
	115	+	// - repo domain.Repo
	116	+	// - n int64
	117	+	func (_e IssueLinkTrigger_Expecter) OnMergeRequestChanged(context1 any, repo any, n any) IssueLinkTrigger_OnMergeRequestChanged_Call {
	118	+	return &IssueLinkTrigger_OnMergeRequestChanged_Call{Call: _e.mock.On("OnMergeRequestChanged", context1, repo, n)}
	119	+	}
	120	+
	121	+	func (_c IssueLinkTrigger_OnMergeRequestChanged_Call) Run(run func(context1 context.Context, repo domain.Repo, n int64)) IssueLinkTrigger_OnMergeRequestChanged_Call {
	122	+	_c.Call.Run(func(args mock.Arguments) {
	123	+	var arg0 context.Context
	124	+	if args[0] != nil {
	125	+	arg0 = args[0].(context.Context)
	126	+	}
	127	+	var arg1 domain.Repo
	128	+	if args[1] != nil {
	129	+	arg1 = args[1].(domain.Repo)
	130	+	}
	131	+	var arg2 int64
	132	+	if args[2] != nil {
	133	+	arg2 = args[2].(int64)
	134	+	}
	135	+	run(
	136	+	arg0,
	137	+	arg1,
	138	+	arg2,
	139	+	)
	140	+	})
	141	+	return _c
	142	+	}
	143	+
	144	+	func (_c IssueLinkTrigger_OnMergeRequestChanged_Call) Return() IssueLinkTrigger_OnMergeRequestChanged_Call {
	145	+	_c.Call.Return()
	146	+	return _c
	147	+	}
	148	+
	149	+	func (_c IssueLinkTrigger_OnMergeRequestChanged_Call) RunAndReturn(run func(context1 context.Context, repo domain.Repo, n int64)) IssueLinkTrigger_OnMergeRequestChanged_Call {
	150	+	_c.Run(run)
	151	+	return _c
	152	+	}
	153	+
	154	+	// OnMergeRequestSettled provides a mock function for the type IssueLinkTrigger
	155	+	func (_mock *IssueLinkTrigger) OnMergeRequestSettled(context1 context.Context, repo domain.Repo, mergeRequest domain.MergeRequest) {
	156	+	_mock.Called(context1, repo, mergeRequest)
	157	+	return
	158	+	}
	159	+
	160	+	// IssueLinkTrigger_OnMergeRequestSettled_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'OnMergeRequestSettled'
	161	+	type IssueLinkTrigger_OnMergeRequestSettled_Call struct {
	162	+	*mock.Call
	163	+	}
	164	+
	165	+	// OnMergeRequestSettled is a helper method to define mock.On call
	166	+	// - context1 context.Context
	167	+	// - repo domain.Repo
	168	+	// - mergeRequest domain.MergeRequest
	169	+	func (_e IssueLinkTrigger_Expecter) OnMergeRequestSettled(context1 any, repo any, mergeRequest any) IssueLinkTrigger_OnMergeRequestSettled_Call {
	170	+	return &IssueLinkTrigger_OnMergeRequestSettled_Call{Call: _e.mock.On("OnMergeRequestSettled", context1, repo, mergeRequest)}
	171	+	}
	172	+
	173	+	func (_c IssueLinkTrigger_OnMergeRequestSettled_Call) Run(run func(context1 context.Context, repo domain.Repo, mergeRequest domain.MergeRequest)) IssueLinkTrigger_OnMergeRequestSettled_Call {
	174	+	_c.Call.Run(func(args mock.Arguments) {
	175	+	var arg0 context.Context
	176	+	if args[0] != nil {
	177	+	arg0 = args[0].(context.Context)
	178	+	}
	179	+	var arg1 domain.Repo
	180	+	if args[1] != nil {
	181	+	arg1 = args[1].(domain.Repo)
	182	+	}
	183	+	var arg2 domain.MergeRequest
	184	+	if args[2] != nil {
	185	+	arg2 = args[2].(domain.MergeRequest)
	186	+	}
	187	+	run(
	188	+	arg0,
	189	+	arg1,
	190	+	arg2,
	191	+	)
	192	+	})
	193	+	return _c
	194	+	}
	195	+
	196	+	func (_c IssueLinkTrigger_OnMergeRequestSettled_Call) Return() IssueLinkTrigger_OnMergeRequestSettled_Call {
	197	+	_c.Call.Return()
	198	+	return _c
	199	+	}
	200	+
	201	+	func (_c IssueLinkTrigger_OnMergeRequestSettled_Call) RunAndReturn(run func(context1 context.Context, repo domain.Repo, mergeRequest domain.MergeRequest)) IssueLinkTrigger_OnMergeRequestSettled_Call {
	202	+	_c.Run(run)
	203	+	return _c
	204	+	}
	205	+
	206	+	// OnMerged provides a mock function for the type IssueLinkTrigger
	207	+	func (_mock *IssueLinkTrigger) OnMerged(context1 context.Context, principal domain.Principal, repo domain.Repo, mergeRequest domain.MergeRequest) {
	208	+	_mock.Called(context1, principal, repo, mergeRequest)
	209	+	return
	210	+	}
	211	+
	212	+	// IssueLinkTrigger_OnMerged_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'OnMerged'
	213	+	type IssueLinkTrigger_OnMerged_Call struct {
	214	+	*mock.Call
	215	+	}
	216	+
	217	+	// OnMerged is a helper method to define mock.On call
	218	+	// - context1 context.Context
	219	+	// - principal domain.Principal
	220	+	// - repo domain.Repo
	221	+	// - mergeRequest domain.MergeRequest
	222	+	func (_e IssueLinkTrigger_Expecter) OnMerged(context1 any, principal any, repo any, mergeRequest any) IssueLinkTrigger_OnMerged_Call {
	223	+	return &IssueLinkTrigger_OnMerged_Call{Call: _e.mock.On("OnMerged", context1, principal, repo, mergeRequest)}
	224	+	}
	225	+
	226	+	func (_c IssueLinkTrigger_OnMerged_Call) Run(run func(context1 context.Context, principal domain.Principal, repo domain.Repo, mergeRequest domain.MergeRequest)) IssueLinkTrigger_OnMerged_Call {
	227	+	_c.Call.Run(func(args mock.Arguments) {
	228	+	var arg0 context.Context
	229	+	if args[0] != nil {
	230	+	arg0 = args[0].(context.Context)
	231	+	}
	232	+	var arg1 domain.Principal
	233	+	if args[1] != nil {
	234	+	arg1 = args[1].(domain.Principal)
	235	+	}
	236	+	var arg2 domain.Repo
	237	+	if args[2] != nil {
	238	+	arg2 = args[2].(domain.Repo)
	239	+	}
	240	+	var arg3 domain.MergeRequest
	241	+	if args[3] != nil {
	242	+	arg3 = args[3].(domain.MergeRequest)
	243	+	}
	244	+	run(
	245	+	arg0,
	246	+	arg1,
	247	+	arg2,
	248	+	arg3,
	249	+	)
	250	+	})
	251	+	return _c
	252	+	}
	253	+
	254	+	func (_c IssueLinkTrigger_OnMerged_Call) Return() IssueLinkTrigger_OnMerged_Call {
	255	+	_c.Call.Return()
	256	+	return _c
	257	+	}
	258	+
	259	+	func (_c IssueLinkTrigger_OnMerged_Call) RunAndReturn(run func(context1 context.Context, principal domain.Principal, repo domain.Repo, mergeRequest domain.MergeRequest)) IssueLinkTrigger_OnMerged_Call {
	260	+	_c.Run(run)
	261	+	return _c
	262	+	}

M internal/ports/ports.go +8 -0


@@ -552,3 +552,11 @@ type IssueLinkStore interface {
552	552		type Clock interface {
553	553		Now() time.Time
554	554		}
	555	+
	556	+	// IssueLinkTrigger updates derived links without failing the primary operation.
	557	+	type IssueLinkTrigger interface {
	558	+	OnMergeRequestChanged(context.Context, domain.Repo, int64)
	559	+	OnMergeRequestSettled(context.Context, domain.Repo, domain.MergeRequest)
	560	+	OnBranchesMoved(context.Context, domain.RepoName, []domain.RefUpdate)
	561	+	OnMerged(context.Context, domain.Principal, domain.Repo, domain.MergeRequest)
	562	+	}


@@ -552,3 +552,11 @@ type IssueLinkStore interface {
552	type Clock interface {	552		type Clock interface {
553	Now() time.Time	553		Now() time.Time
554	}	554		}
		555	+
		556	+	// IssueLinkTrigger updates derived links without failing the primary operation.
		557	+	type IssueLinkTrigger interface {
		558	+	OnMergeRequestChanged(context.Context, domain.Repo, int64)
		559	+	OnMergeRequestSettled(context.Context, domain.Repo, domain.MergeRequest)
		560	+	OnBranchesMoved(context.Context, domain.RepoName, []domain.RefUpdate)
		561	+	OnMerged(context.Context, domain.Principal, domain.Repo, domain.MergeRequest)
		562	+	}

A internal/usecase/issue_links.go +229 -0

@@ -0,0 +1,229 @@
	1	+	// SPDX-License-Identifier: AGPL-3.0-or-later
	2	+
	3	+	package usecase
	4	+
	5	+	import (
	6	+	"context"
	7	+	"errors"
	8	+	"slices"
	9	+	"strings"
	10	+	"time"
	11	+
	12	+	"bnema.dev/ermite/internal/domain"
	13	+	"bnema.dev/ermite/internal/ports"
	14	+	"github.com/bnema/zerowrap"
	15	+	)
	16	+
	17	+	const MaxIssueLinkCommits = ports.MaxMergeRequestCommits
	18	+	const MaxIssueLinksPerIssue = 100
	19	+	const maxLinkedMRsPerPush = 50
	20	+
	21	+	type IssueLinksConfig struct {
	22	+	Meta ports.RepoMetaStore
	23	+	Issues ports.IssueStore
	24	+	MRs ports.MergeRequestStore
	25	+	Links ports.IssueLinkStore
	26	+	Git ports.MergeGit
	27	+	Bus ports.EventBus
	28	+	Clock ports.Clock
	29	+	}
	30	+
	31	+	// IssueLinks maintains the derived index and applies closing references on merge.
	32	+	type IssueLinks struct{ cfg IssueLinksConfig }
	33	+
	34	+	var _ ports.IssueLinkTrigger = (*IssueLinks)(nil)
	35	+
	36	+	func NewIssueLinks(cfg IssueLinksConfig) *IssueLinks { return &IssueLinks{cfg: cfg} }
	37	+
	38	+	// Reindex replaces links from the current texts and bounded commit range.
	39	+	func (l *IssueLinks) Reindex(ctx context.Context, repo domain.Repo, number int64) error {
	40	+	_, err := l.reindex(ctx, repo, number)
	41	+	return err
	42	+	}
	43	+	func (l *IssueLinks) reindex(ctx context.Context, repo domain.Repo, number int64) ([]int64, error) {
	44	+	mr, err := l.cfg.MRs.Get(ctx, repo.Name, number)
	45	+	if err != nil {
	46	+	return nil, err
	47	+	}
	48	+	notes, err := l.cfg.MRs.ListComments(ctx, repo.Name, number)
	49	+	if err != nil {
	50	+	return nil, err
	51	+	}
	52	+	var texts, messages []string
	53	+	for _, note := range notes {
	54	+	if !note.Deleted {
	55	+	texts = append(texts, note.Text.String())
	56	+	}
	57	+	}
	58	+	if mr.IsOpen() {
	59	+	mr.HeadID, err = l.cfg.Git.BranchHead(ctx, repo.Name, mr.Source)
	60	+	if errors.Is(err, domain.ErrNotFound) {
	61	+	mr.HeadID = domain.ObjectID{}
	62	+	} else if err != nil {
	63	+	return nil, err
	64	+	}
	65	+	}
	66	+	exclude, _, err := mrRange(ctx, l.cfg.Git, mr)
	67	+	if err != nil {
	68	+	return nil, err
	69	+	}
	70	+	has := !mr.HeadID.IsZero()
	71	+	if has && !mr.IsOpen() {
	72	+	has, err = l.cfg.Git.HasCommit(ctx, repo.Name, mr.HeadID)
	73	+	if err != nil {
	74	+	return nil, err
	75	+	}
	76	+	}
	77	+	if has {
	78	+	commits, more, err := l.cfg.Git.ListRange(ctx, repo.Name, exclude, mr.HeadID, MaxIssueLinkCommits)
	79	+	if err != nil {
	80	+	return nil, err
	81	+	}
	82	+	if more {
	83	+	log := zerowrap.FromCtx(ctx)
	84	+	log.Debug().Msg("issue link commit range truncated")
	85	+	}
	86	+	for _, commit := range commits {
	87	+	messages = append(messages, commit.Message)
	88	+	}
	89	+	}
	90	+	refs := domain.ScanMergeRequest(mr.Title.String(), mr.Description.String(), texts, messages)
	91	+	var mentions, closes []int64
	92	+	for _, n := range refs.Mentions {
	93	+	_, err := l.cfg.Issues.Get(ctx, repo.Name, n)
	94	+	if errors.Is(err, domain.ErrNotFound) {
	95	+	continue
	96	+	}
	97	+	if err != nil {
	98	+	return nil, err
	99	+	}
	100	+	mentions = append(mentions, n)
	101	+	if slices.Contains(refs.Closes, n) {
	102	+	closes = append(closes, n)
	103	+	}
	104	+	}
	105	+	for range maxWriteRetries {
	106	+	added, _, err := l.cfg.Links.ReplaceLinks(ctx, repo.Name, number, mentions, closes)
	107	+	if errors.Is(err, domain.ErrConflict) {
	108	+	continue
	109	+	}
	110	+	if err != nil {
	111	+	return nil, err
	112	+	}
	113	+	for _, link := range added {
	114	+	l.notify(ctx, repo, link)
	115	+	}
	116	+	return closes, nil
	117	+	}
	118	+	return nil, domain.ErrConflict
	119	+	}
	120	+	func (l *IssueLinks) notify(ctx context.Context, repo domain.Repo, link domain.IssueLink) {
	121	+	l.cfg.Bus.Publish(ctx, domain.IssueReferenced{Repo: repo.Name, Issue: link.Issue, MergeRequest: link.MergeRequest, At: l.cfg.Clock.Now().UTC(), Visibility: repo.Visibility, CreatedAt: repo.CreatedAt})
	122	+	}
	123	+	func linkContext(ctx context.Context) (context.Context, context.CancelFunc) {
	124	+	return context.WithTimeout(context.WithoutCancel(ctx), 10*time.Second)
	125	+	}
	126	+	func linkWarning(ctx context.Context, err error) {
	127	+	if err != nil {
	128	+	log := zerowrap.FromCtx(ctx)
	129	+	log.Warn().Err(err).Msg("issue links not updated")
	130	+	}
	131	+	}
	132	+	func (l *IssueLinks) OnMergeRequestChanged(ctx context.Context, repo domain.Repo, number int64) {
	133	+	ctx, cancel := linkContext(ctx)
	134	+	defer cancel()
	135	+	linkWarning(ctx, l.Reindex(ctx, repo, number))
	136	+	}
	137	+	func (l *IssueLinks) settled(ctx context.Context, repo domain.Repo, mr domain.MergeRequest) {
	138	+	links, err := l.cfg.Links.LinksOfMergeRequest(ctx, repo.Name, mr.Number)
	139	+	linkWarning(ctx, err)
	140	+	if err == nil {
	141	+	for _, link := range links {
	142	+	l.notify(ctx, repo, link)
	143	+	}
	144	+	}
	145	+	}
	146	+	func (l *IssueLinks) OnMergeRequestSettled(ctx context.Context, repo domain.Repo, mr domain.MergeRequest) {
	147	+	ctx, cancel := linkContext(ctx)
	148	+	defer cancel()
	149	+	l.settled(ctx, repo, mr)
	150	+	}
	151	+	func (l *IssueLinks) OnBranchesMoved(ctx context.Context, name domain.RepoName, updates []domain.RefUpdate) {
	152	+	ctx, cancel := linkContext(ctx)
	153	+	defer cancel()
	154	+	var branches []string
	155	+	for _, up := range updates {
	156	+	if b, ok := strings.CutPrefix(up.Ref, "refs/heads/"); ok && !up.IsDelete() {
	157	+	branches = append(branches, b)
	158	+	}
	159	+	}
	160	+	if len(branches) == 0 {
	161	+	return
	162	+	}
	163	+	repo, err := l.cfg.Meta.Get(ctx, name)
	164	+	if err != nil {
	165	+	linkWarning(ctx, err)
	166	+	return
	167	+	}
	168	+	numbers, truncated, err := l.cfg.MRs.OpenBySource(ctx, name, branches, maxLinkedMRsPerPush)
	169	+	if err != nil {
	170	+	linkWarning(ctx, err)
	171	+	return
	172	+	}
	173	+	if truncated {
	174	+	log := zerowrap.FromCtx(ctx)
	175	+	log.Warn().Str("repo", name.String()).Msg("issue link merge requests truncated")
	176	+	}
	177	+	for _, n := range numbers {
	178	+	linkWarning(ctx, l.Reindex(ctx, repo, n))
	179	+	}
	180	+	}
	181	+	func (l *IssueLinks) OnMerged(ctx context.Context, p domain.Principal, repo domain.Repo, mr domain.MergeRequest) {
	182	+	ctx, cancel := linkContext(ctx)
	183	+	defer cancel()
	184	+	defer l.settled(ctx, repo, mr)
	185	+	closes, err := l.reindex(ctx, repo, mr.Number)
	186	+	if err != nil {
	187	+	linkWarning(ctx, err)
	188	+	return
	189	+	}
	190	+	if !repo.Settings.IssuesEnabled() {
	191	+	log := zerowrap.FromCtx(ctx)
	192	+	log.Debug().Msg("merge issue closing disabled")
	193	+	return
	194	+	}
	195	+	for _, n := range closes {
	196	+	err := l.close(ctx, p, repo, mr.Number, n)
	197	+	if err != nil {
	198	+	log := zerowrap.FromCtx(ctx)
	199	+	log.Warn().Err(err).Str("repo", repo.Name.String()).Int64("number", n).Int64("merge_request", mr.Number).Msg("issue not closed by the merge")
	200	+	}
	201	+	}
	202	+	}
	203	+	func (l *IssueLinks) close(ctx context.Context, p domain.Principal, repo domain.Repo, mr, n int64) error {
	204	+	for range maxWriteRetries {
	205	+	issue, err := l.cfg.Issues.Get(ctx, repo.Name, n)
	206	+	if err != nil {
	207	+	return err
	208	+	}
	209	+	if !issue.IsOpen() {
	210	+	return nil
	211	+	}
	212	+	issue.State = domain.IssueStateClosed
	213	+	issue.ClosedByMergeRequest = mr
	214	+	issue.UpdatedAt = l.cfg.Clock.Now().UTC()
	215	+	err = l.cfg.Issues.Update(ctx, issue)
	216	+	if errors.Is(err, domain.ErrConflict) {
	217	+	continue
	218	+	}
	219	+	if err != nil {
	220	+	return err
	221	+	}
	222	+	recordActivity(ctx, l.cfg.Meta, repo.Name, issue.UpdatedAt)
	223	+	log := zerowrap.FromCtx(ctx)
	224	+	log.Info().Str("repo", repo.Name.String()).Int64("number", n).Int64("merge_request", mr).Str("principal", p.Label()).Str("token_id", p.TokenID()).Msg("issue closed by merge")
	225	+	l.cfg.Bus.Publish(ctx, domain.IssueClosed{Issue: issue, At: issue.UpdatedAt, Visibility: repo.Visibility, CreatedAt: repo.CreatedAt})
	226	+	return nil
	227	+	}
	228	+	return domain.ErrConflict
	229	+	}

@@ -0,0 +1,229 @@
	1	+	// SPDX-License-Identifier: AGPL-3.0-or-later
	2	+
	3	+	package usecase
	4	+
	5	+	import (
	6	+	"context"
	7	+	"errors"
	8	+	"slices"
	9	+	"strings"
	10	+	"time"
	11	+
	12	+	"bnema.dev/ermite/internal/domain"
	13	+	"bnema.dev/ermite/internal/ports"
	14	+	"github.com/bnema/zerowrap"
	15	+	)
	16	+
	17	+	const MaxIssueLinkCommits = ports.MaxMergeRequestCommits
	18	+	const MaxIssueLinksPerIssue = 100
	19	+	const maxLinkedMRsPerPush = 50
	20	+
	21	+	type IssueLinksConfig struct {
	22	+	Meta ports.RepoMetaStore
	23	+	Issues ports.IssueStore
	24	+	MRs ports.MergeRequestStore
	25	+	Links ports.IssueLinkStore
	26	+	Git ports.MergeGit
	27	+	Bus ports.EventBus
	28	+	Clock ports.Clock
	29	+	}
	30	+
	31	+	// IssueLinks maintains the derived index and applies closing references on merge.
	32	+	type IssueLinks struct{ cfg IssueLinksConfig }
	33	+
	34	+	var _ ports.IssueLinkTrigger = (*IssueLinks)(nil)
	35	+
	36	+	func NewIssueLinks(cfg IssueLinksConfig) *IssueLinks { return &IssueLinks{cfg: cfg} }
	37	+
	38	+	// Reindex replaces links from the current texts and bounded commit range.
	39	+	func (l *IssueLinks) Reindex(ctx context.Context, repo domain.Repo, number int64) error {
	40	+	_, err := l.reindex(ctx, repo, number)
	41	+	return err
	42	+	}
	43	+	func (l *IssueLinks) reindex(ctx context.Context, repo domain.Repo, number int64) ([]int64, error) {
	44	+	mr, err := l.cfg.MRs.Get(ctx, repo.Name, number)
	45	+	if err != nil {
	46	+	return nil, err
	47	+	}
	48	+	notes, err := l.cfg.MRs.ListComments(ctx, repo.Name, number)
	49	+	if err != nil {
	50	+	return nil, err
	51	+	}
	52	+	var texts, messages []string
	53	+	for _, note := range notes {
	54	+	if !note.Deleted {
	55	+	texts = append(texts, note.Text.String())
	56	+	}
	57	+	}
	58	+	if mr.IsOpen() {
	59	+	mr.HeadID, err = l.cfg.Git.BranchHead(ctx, repo.Name, mr.Source)
	60	+	if errors.Is(err, domain.ErrNotFound) {
	61	+	mr.HeadID = domain.ObjectID{}
	62	+	} else if err != nil {
	63	+	return nil, err
	64	+	}
	65	+	}
	66	+	exclude, _, err := mrRange(ctx, l.cfg.Git, mr)
	67	+	if err != nil {
	68	+	return nil, err
	69	+	}
	70	+	has := !mr.HeadID.IsZero()
	71	+	if has && !mr.IsOpen() {
	72	+	has, err = l.cfg.Git.HasCommit(ctx, repo.Name, mr.HeadID)
	73	+	if err != nil {
	74	+	return nil, err
	75	+	}
	76	+	}
	77	+	if has {
	78	+	commits, more, err := l.cfg.Git.ListRange(ctx, repo.Name, exclude, mr.HeadID, MaxIssueLinkCommits)
	79	+	if err != nil {
	80	+	return nil, err
	81	+	}
	82	+	if more {
	83	+	log := zerowrap.FromCtx(ctx)
	84	+	log.Debug().Msg("issue link commit range truncated")
	85	+	}
	86	+	for _, commit := range commits {
	87	+	messages = append(messages, commit.Message)
	88	+	}
	89	+	}
	90	+	refs := domain.ScanMergeRequest(mr.Title.String(), mr.Description.String(), texts, messages)
	91	+	var mentions, closes []int64
	92	+	for _, n := range refs.Mentions {
	93	+	_, err := l.cfg.Issues.Get(ctx, repo.Name, n)
	94	+	if errors.Is(err, domain.ErrNotFound) {
	95	+	continue
	96	+	}
	97	+	if err != nil {
	98	+	return nil, err
	99	+	}
	100	+	mentions = append(mentions, n)
	101	+	if slices.Contains(refs.Closes, n) {
	102	+	closes = append(closes, n)
	103	+	}
	104	+	}
	105	+	for range maxWriteRetries {
	106	+	added, _, err := l.cfg.Links.ReplaceLinks(ctx, repo.Name, number, mentions, closes)
	107	+	if errors.Is(err, domain.ErrConflict) {
	108	+	continue
	109	+	}
	110	+	if err != nil {
	111	+	return nil, err
	112	+	}
	113	+	for _, link := range added {
	114	+	l.notify(ctx, repo, link)
	115	+	}
	116	+	return closes, nil
	117	+	}
	118	+	return nil, domain.ErrConflict
	119	+	}
	120	+	func (l *IssueLinks) notify(ctx context.Context, repo domain.Repo, link domain.IssueLink) {
	121	+	l.cfg.Bus.Publish(ctx, domain.IssueReferenced{Repo: repo.Name, Issue: link.Issue, MergeRequest: link.MergeRequest, At: l.cfg.Clock.Now().UTC(), Visibility: repo.Visibility, CreatedAt: repo.CreatedAt})
	122	+	}
	123	+	func linkContext(ctx context.Context) (context.Context, context.CancelFunc) {
	124	+	return context.WithTimeout(context.WithoutCancel(ctx), 10*time.Second)
	125	+	}
	126	+	func linkWarning(ctx context.Context, err error) {
	127	+	if err != nil {
	128	+	log := zerowrap.FromCtx(ctx)
	129	+	log.Warn().Err(err).Msg("issue links not updated")
	130	+	}
	131	+	}
	132	+	func (l *IssueLinks) OnMergeRequestChanged(ctx context.Context, repo domain.Repo, number int64) {
	133	+	ctx, cancel := linkContext(ctx)
	134	+	defer cancel()
	135	+	linkWarning(ctx, l.Reindex(ctx, repo, number))
	136	+	}
	137	+	func (l *IssueLinks) settled(ctx context.Context, repo domain.Repo, mr domain.MergeRequest) {
	138	+	links, err := l.cfg.Links.LinksOfMergeRequest(ctx, repo.Name, mr.Number)
	139	+	linkWarning(ctx, err)
	140	+	if err == nil {
	141	+	for _, link := range links {
	142	+	l.notify(ctx, repo, link)
	143	+	}
	144	+	}
	145	+	}
	146	+	func (l *IssueLinks) OnMergeRequestSettled(ctx context.Context, repo domain.Repo, mr domain.MergeRequest) {
	147	+	ctx, cancel := linkContext(ctx)
	148	+	defer cancel()
	149	+	l.settled(ctx, repo, mr)
	150	+	}
	151	+	func (l *IssueLinks) OnBranchesMoved(ctx context.Context, name domain.RepoName, updates []domain.RefUpdate) {
	152	+	ctx, cancel := linkContext(ctx)
	153	+	defer cancel()
	154	+	var branches []string
	155	+	for _, up := range updates {
	156	+	if b, ok := strings.CutPrefix(up.Ref, "refs/heads/"); ok && !up.IsDelete() {
	157	+	branches = append(branches, b)
	158	+	}
	159	+	}
	160	+	if len(branches) == 0 {
	161	+	return
	162	+	}
	163	+	repo, err := l.cfg.Meta.Get(ctx, name)
	164	+	if err != nil {
	165	+	linkWarning(ctx, err)
	166	+	return
	167	+	}
	168	+	numbers, truncated, err := l.cfg.MRs.OpenBySource(ctx, name, branches, maxLinkedMRsPerPush)
	169	+	if err != nil {
	170	+	linkWarning(ctx, err)
	171	+	return
	172	+	}
	173	+	if truncated {
	174	+	log := zerowrap.FromCtx(ctx)
	175	+	log.Warn().Str("repo", name.String()).Msg("issue link merge requests truncated")
	176	+	}
	177	+	for _, n := range numbers {
	178	+	linkWarning(ctx, l.Reindex(ctx, repo, n))
	179	+	}
	180	+	}
	181	+	func (l *IssueLinks) OnMerged(ctx context.Context, p domain.Principal, repo domain.Repo, mr domain.MergeRequest) {
	182	+	ctx, cancel := linkContext(ctx)
	183	+	defer cancel()
	184	+	defer l.settled(ctx, repo, mr)
	185	+	closes, err := l.reindex(ctx, repo, mr.Number)
	186	+	if err != nil {
	187	+	linkWarning(ctx, err)
	188	+	return
	189	+	}
	190	+	if !repo.Settings.IssuesEnabled() {
	191	+	log := zerowrap.FromCtx(ctx)
	192	+	log.Debug().Msg("merge issue closing disabled")
	193	+	return
	194	+	}
	195	+	for _, n := range closes {
	196	+	err := l.close(ctx, p, repo, mr.Number, n)
	197	+	if err != nil {
	198	+	log := zerowrap.FromCtx(ctx)
	199	+	log.Warn().Err(err).Str("repo", repo.Name.String()).Int64("number", n).Int64("merge_request", mr.Number).Msg("issue not closed by the merge")
	200	+	}
	201	+	}
	202	+	}
	203	+	func (l *IssueLinks) close(ctx context.Context, p domain.Principal, repo domain.Repo, mr, n int64) error {
	204	+	for range maxWriteRetries {
	205	+	issue, err := l.cfg.Issues.Get(ctx, repo.Name, n)
	206	+	if err != nil {
	207	+	return err
	208	+	}
	209	+	if !issue.IsOpen() {
	210	+	return nil
	211	+	}
	212	+	issue.State = domain.IssueStateClosed
	213	+	issue.ClosedByMergeRequest = mr
	214	+	issue.UpdatedAt = l.cfg.Clock.Now().UTC()
	215	+	err = l.cfg.Issues.Update(ctx, issue)
	216	+	if errors.Is(err, domain.ErrConflict) {
	217	+	continue
	218	+	}
	219	+	if err != nil {
	220	+	return err
	221	+	}
	222	+	recordActivity(ctx, l.cfg.Meta, repo.Name, issue.UpdatedAt)
	223	+	log := zerowrap.FromCtx(ctx)
	224	+	log.Info().Str("repo", repo.Name.String()).Int64("number", n).Int64("merge_request", mr).Str("principal", p.Label()).Str("token_id", p.TokenID()).Msg("issue closed by merge")
	225	+	l.cfg.Bus.Publish(ctx, domain.IssueClosed{Issue: issue, At: issue.UpdatedAt, Visibility: repo.Visibility, CreatedAt: repo.CreatedAt})
	226	+	return nil
	227	+	}
	228	+	return domain.ErrConflict
	229	+	}

A internal/usecase/issue_links_test.go +131 -0

@@ -0,0 +1,131 @@
	1	+	// SPDX-License-Identifier: AGPL-3.0-or-later
	2	+
	3	+	package usecase_test
	4	+
	5	+	import (
	6	+	"fmt"
	7	+	"testing"
	8	+
	9	+	"bnema.dev/ermite/internal/domain"
	10	+	"bnema.dev/ermite/internal/ports"
	11	+	"bnema.dev/ermite/internal/usecase"
	12	+	"github.com/stretchr/testify/assert"
	13	+	"github.com/stretchr/testify/require"
	14	+	)
	15	+
	16	+	func linkedRig(t testing.T) (mrRig, usecase.IssueLinks, usecase.Issues) {
	17	+	t.Helper()
	18	+	r := newMRRig(t)
	19	+	r.seed()
	20	+	_, err := r.store.Mutate(r.ctx, r.repo, func(repo *domain.Repo) (bool, error) { repo.Settings.Issues = domain.IssuesOwner; return true, nil })
	21	+	require.NoError(t, err)
	22	+	links := usecase.NewIssueLinks(usecase.IssueLinksConfig{Meta: r.store, Issues: r.store.Issues(), MRs: r.store.MergeRequests(), Links: r.store.IssueLinks(), Git: r.git, Bus: r.bus, Clock: fixedClock{}})
	23	+	r.mrs = usecase.NewMergeRequests(usecase.MergeRequestsConfig{Meta: r.store, Store: r.store.MergeRequests(), Repos: r.git, Git: r.git, Bus: r.bus, Clock: fixedClock{}, Maint: r.sched, Links: links})
	24	+	issues := usecase.NewIssues(usecase.IssuesConfig{Meta: r.store, Store: r.store.Issues(), MergeRequests: r.store.MergeRequests(), Links: r.store.IssueLinks(), Bus: r.bus, Clock: fixedClock{}})
	25	+	return r, links, issues
	26	+	}
	27	+
	28	+	func TestIssueLinksTextsPushAndReferences(t *testing.T) {
	29	+	r, links, issues := linkedRig(t)
	30	+	issue, err := issues.Create(r.ctx, root, r.repo, ports.CreateIssueParams{Title: "bug"})
	31	+	require.NoError(t, err)
	32	+	r.feature("feat")
	33	+	mr, err := r.mrs.Create(r.ctx, root, r.repo, ports.CreateMergeRequestParams{Title: "mention", Source: "feat", Description: fmt.Sprintf("see #%d #999", issue.Number)})
	34	+	require.NoError(t, err)
	35	+	got, err := issues.Get(r.ctx, root, r.repo, issue.Number)
	36	+	require.NoError(t, err)
	37	+	require.Len(t, got.References, 1)
	38	+	assert.Equal(t, mr.Title, got.References[0].Title)
	39	+	other, err := issues.Create(r.ctx, root, r.repo, ports.CreateIssueParams{Title: "other"})
	40	+	require.NoError(t, err)
	41	+	note, err := r.mrs.AddComment(r.ctx, root, r.repo, mr.Number, ports.AddCommentParams{Text: fmt.Sprintf("Fixes #%d; see #%d #999", other.Number, mr.Number)})
	42	+	require.NoError(t, err)
	43	+	got, err = issues.Get(r.ctx, root, r.repo, other.Number)
	44	+	require.NoError(t, err)
	45	+	require.Len(t, got.References, 1)
	46	+	assert.False(t, got.References[0].Closes)
	47	+	indexed, err := r.store.IssueLinks().LinksOfMergeRequest(r.ctx, r.repo, mr.Number)
	48	+	require.NoError(t, err)
	49	+	require.Len(t, indexed, 2, "MR and missing numbers must not be stored")
	50	+	_, err = r.mrs.EditComment(r.ctx, root, r.repo, mr.Number, note.ID, "no mention")
	51	+	require.NoError(t, err)
	52	+	got, err = issues.Get(r.ctx, root, r.repo, other.Number)
	53	+	require.NoError(t, err)
	54	+	assert.Empty(t, got.References)
	55	+	head := r.commit(author, "push.txt", "push", fmt.Sprintf("Fixes #%d", other.Number))
	56	+	r.push("feat")
	57	+	links.OnBranchesMoved(r.ctx, r.repo, []domain.RefUpdate{{Ref: "refs/heads/feat", New: head.String()}})
	58	+	got, err = issues.Get(r.ctx, root, r.repo, other.Number)
	59	+	require.NoError(t, err)
	60	+	require.Len(t, got.References, 1)
	61	+	assert.True(t, got.References[0].Closes)
	62	+	stored, err := r.store.IssueLinks().LinksOfMergeRequest(r.ctx, r.repo, mr.Number)
	63	+	require.NoError(t, err)
	64	+	require.Len(t, stored, 2)
	65	+	_, err = r.mrs.Close(r.ctx, root, r.repo, mr.Number)
	66	+	require.NoError(t, err)
	67	+	got, err = issues.Get(r.ctx, root, r.repo, other.Number)
	68	+	require.NoError(t, err)
	69	+	assert.True(t, got.Issue.IsOpen())
	70	+	assert.Equal(t, domain.MRStateClosed, got.References[0].State)
	71	+	}
	72	+
	73	+	func TestIssueLinksMergeClosing(t *testing.T) {
	74	+	for _, mode := range []string{"open", "off", "closed"} {
	75	+	t.Run(mode, func(t *testing.T) {
	76	+	r, _, issues := linkedRig(t)
	77	+	issue, err := issues.Create(r.ctx, root, r.repo, ports.CreateIssueParams{Title: "bug"})
	78	+	require.NoError(t, err)
	79	+	if mode == "closed" {
	80	+	issue, err = issues.Close(r.ctx, root, r.repo, issue.Number)
	81	+	require.NoError(t, err)
	82	+	}
	83	+	r.feature("feat")
	84	+	head := r.commit(author, "fix.txt", "fix", fmt.Sprintf("Fixes #%d", issue.Number))
	85	+	r.push("feat")
	86	+	mr := r.open("feat")
	87	+	if mode == "off" {
	88	+	_, err = r.store.Mutate(r.ctx, r.repo, func(repo *domain.Repo) (bool, error) { repo.Settings.Issues = domain.IssuesOff; return true, nil })
	89	+	require.NoError(t, err)
	90	+	}
	91	+	issue, err = r.store.Issues().Get(r.ctx, r.repo, issue.Number)
	92	+	require.NoError(t, err)
	93	+	r.drain()
	94	+	_, err = r.mrs.Merge(r.ctx, root, r.repo, mr.Number, ports.MergeParams{HeadID: head, Mode: domain.MergeModeFastForward, DeleteSource: true})
	95	+	require.NoError(t, err)
	96	+	events := r.drain()
	97	+	got, err := r.store.Issues().Get(r.ctx, r.repo, issue.Number)
	98	+	require.NoError(t, err)
	99	+	refs, err := r.store.IssueLinks().LinksOfMergeRequest(r.ctx, r.repo, mr.Number)
	100	+	require.NoError(t, err)
	101	+	require.Len(t, refs, 1)
	102	+	assert.True(t, refs[0].Closes)
	103	+	closedEvents, referenced := 0, 0
	104	+	for _, ev := range events {
	105	+	switch ev.(type) {
	106	+	case domain.IssueClosed:
	107	+	closedEvents++
	108	+	case domain.IssueReferenced:
	109	+	referenced++
	110	+	}
	111	+	}
	112	+	assert.Positive(t, referenced)
	113	+	if mode == "open" {
	114	+	assert.Equal(t, mr.Number, got.ClosedByMergeRequest)
	115	+	assert.False(t, got.IsOpen())
	116	+	assert.Equal(t, 1, closedEvents)
	117	+	reopened, err := issues.Reopen(r.ctx, root, r.repo, issue.Number)
	118	+	require.NoError(t, err)
	119	+	assert.Zero(t, reopened.ClosedByMergeRequest)
	120	+	} else {
	121	+	assert.Zero(t, got.ClosedByMergeRequest)
	122	+	assert.Equal(t, 0, closedEvents)
	123	+	if mode == "closed" {
	124	+	assert.Equal(t, issue, got)
	125	+	} else {
	126	+	assert.True(t, got.IsOpen())
	127	+	}
	128	+	}
	129	+	})
	130	+	}
	131	+	}

@@ -0,0 +1,131 @@
	1	+	// SPDX-License-Identifier: AGPL-3.0-or-later
	2	+
	3	+	package usecase_test
	4	+
	5	+	import (
	6	+	"fmt"
	7	+	"testing"
	8	+
	9	+	"bnema.dev/ermite/internal/domain"
	10	+	"bnema.dev/ermite/internal/ports"
	11	+	"bnema.dev/ermite/internal/usecase"
	12	+	"github.com/stretchr/testify/assert"
	13	+	"github.com/stretchr/testify/require"
	14	+	)
	15	+
	16	+	func linkedRig(t testing.T) (mrRig, usecase.IssueLinks, usecase.Issues) {
	17	+	t.Helper()
	18	+	r := newMRRig(t)
	19	+	r.seed()
	20	+	_, err := r.store.Mutate(r.ctx, r.repo, func(repo *domain.Repo) (bool, error) { repo.Settings.Issues = domain.IssuesOwner; return true, nil })
	21	+	require.NoError(t, err)
	22	+	links := usecase.NewIssueLinks(usecase.IssueLinksConfig{Meta: r.store, Issues: r.store.Issues(), MRs: r.store.MergeRequests(), Links: r.store.IssueLinks(), Git: r.git, Bus: r.bus, Clock: fixedClock{}})
	23	+	r.mrs = usecase.NewMergeRequests(usecase.MergeRequestsConfig{Meta: r.store, Store: r.store.MergeRequests(), Repos: r.git, Git: r.git, Bus: r.bus, Clock: fixedClock{}, Maint: r.sched, Links: links})
	24	+	issues := usecase.NewIssues(usecase.IssuesConfig{Meta: r.store, Store: r.store.Issues(), MergeRequests: r.store.MergeRequests(), Links: r.store.IssueLinks(), Bus: r.bus, Clock: fixedClock{}})
	25	+	return r, links, issues
	26	+	}
	27	+
	28	+	func TestIssueLinksTextsPushAndReferences(t *testing.T) {
	29	+	r, links, issues := linkedRig(t)
	30	+	issue, err := issues.Create(r.ctx, root, r.repo, ports.CreateIssueParams{Title: "bug"})
	31	+	require.NoError(t, err)
	32	+	r.feature("feat")
	33	+	mr, err := r.mrs.Create(r.ctx, root, r.repo, ports.CreateMergeRequestParams{Title: "mention", Source: "feat", Description: fmt.Sprintf("see #%d #999", issue.Number)})
	34	+	require.NoError(t, err)
	35	+	got, err := issues.Get(r.ctx, root, r.repo, issue.Number)
	36	+	require.NoError(t, err)
	37	+	require.Len(t, got.References, 1)
	38	+	assert.Equal(t, mr.Title, got.References[0].Title)
	39	+	other, err := issues.Create(r.ctx, root, r.repo, ports.CreateIssueParams{Title: "other"})
	40	+	require.NoError(t, err)
	41	+	note, err := r.mrs.AddComment(r.ctx, root, r.repo, mr.Number, ports.AddCommentParams{Text: fmt.Sprintf("Fixes #%d; see #%d #999", other.Number, mr.Number)})
	42	+	require.NoError(t, err)
	43	+	got, err = issues.Get(r.ctx, root, r.repo, other.Number)
	44	+	require.NoError(t, err)
	45	+	require.Len(t, got.References, 1)
	46	+	assert.False(t, got.References[0].Closes)
	47	+	indexed, err := r.store.IssueLinks().LinksOfMergeRequest(r.ctx, r.repo, mr.Number)
	48	+	require.NoError(t, err)
	49	+	require.Len(t, indexed, 2, "MR and missing numbers must not be stored")
	50	+	_, err = r.mrs.EditComment(r.ctx, root, r.repo, mr.Number, note.ID, "no mention")
	51	+	require.NoError(t, err)
	52	+	got, err = issues.Get(r.ctx, root, r.repo, other.Number)
	53	+	require.NoError(t, err)
	54	+	assert.Empty(t, got.References)
	55	+	head := r.commit(author, "push.txt", "push", fmt.Sprintf("Fixes #%d", other.Number))
	56	+	r.push("feat")
	57	+	links.OnBranchesMoved(r.ctx, r.repo, []domain.RefUpdate{{Ref: "refs/heads/feat", New: head.String()}})
	58	+	got, err = issues.Get(r.ctx, root, r.repo, other.Number)
	59	+	require.NoError(t, err)
	60	+	require.Len(t, got.References, 1)
	61	+	assert.True(t, got.References[0].Closes)
	62	+	stored, err := r.store.IssueLinks().LinksOfMergeRequest(r.ctx, r.repo, mr.Number)
	63	+	require.NoError(t, err)
	64	+	require.Len(t, stored, 2)
	65	+	_, err = r.mrs.Close(r.ctx, root, r.repo, mr.Number)
	66	+	require.NoError(t, err)
	67	+	got, err = issues.Get(r.ctx, root, r.repo, other.Number)
	68	+	require.NoError(t, err)
	69	+	assert.True(t, got.Issue.IsOpen())
	70	+	assert.Equal(t, domain.MRStateClosed, got.References[0].State)
	71	+	}
	72	+
	73	+	func TestIssueLinksMergeClosing(t *testing.T) {
	74	+	for _, mode := range []string{"open", "off", "closed"} {
	75	+	t.Run(mode, func(t *testing.T) {
	76	+	r, _, issues := linkedRig(t)
	77	+	issue, err := issues.Create(r.ctx, root, r.repo, ports.CreateIssueParams{Title: "bug"})
	78	+	require.NoError(t, err)
	79	+	if mode == "closed" {
	80	+	issue, err = issues.Close(r.ctx, root, r.repo, issue.Number)
	81	+	require.NoError(t, err)
	82	+	}
	83	+	r.feature("feat")
	84	+	head := r.commit(author, "fix.txt", "fix", fmt.Sprintf("Fixes #%d", issue.Number))
	85	+	r.push("feat")
	86	+	mr := r.open("feat")
	87	+	if mode == "off" {
	88	+	_, err = r.store.Mutate(r.ctx, r.repo, func(repo *domain.Repo) (bool, error) { repo.Settings.Issues = domain.IssuesOff; return true, nil })
	89	+	require.NoError(t, err)
	90	+	}
	91	+	issue, err = r.store.Issues().Get(r.ctx, r.repo, issue.Number)
	92	+	require.NoError(t, err)
	93	+	r.drain()
	94	+	_, err = r.mrs.Merge(r.ctx, root, r.repo, mr.Number, ports.MergeParams{HeadID: head, Mode: domain.MergeModeFastForward, DeleteSource: true})
	95	+	require.NoError(t, err)
	96	+	events := r.drain()
	97	+	got, err := r.store.Issues().Get(r.ctx, r.repo, issue.Number)
	98	+	require.NoError(t, err)
	99	+	refs, err := r.store.IssueLinks().LinksOfMergeRequest(r.ctx, r.repo, mr.Number)
	100	+	require.NoError(t, err)
	101	+	require.Len(t, refs, 1)
	102	+	assert.True(t, refs[0].Closes)
	103	+	closedEvents, referenced := 0, 0
	104	+	for _, ev := range events {
	105	+	switch ev.(type) {
	106	+	case domain.IssueClosed:
	107	+	closedEvents++
	108	+	case domain.IssueReferenced:
	109	+	referenced++
	110	+	}
	111	+	}
	112	+	assert.Positive(t, referenced)
	113	+	if mode == "open" {
	114	+	assert.Equal(t, mr.Number, got.ClosedByMergeRequest)
	115	+	assert.False(t, got.IsOpen())
	116	+	assert.Equal(t, 1, closedEvents)
	117	+	reopened, err := issues.Reopen(r.ctx, root, r.repo, issue.Number)
	118	+	require.NoError(t, err)
	119	+	assert.Zero(t, reopened.ClosedByMergeRequest)
	120	+	} else {
	121	+	assert.Zero(t, got.ClosedByMergeRequest)
	122	+	assert.Equal(t, 0, closedEvents)
	123	+	if mode == "closed" {
	124	+	assert.Equal(t, issue, got)
	125	+	} else {
	126	+	assert.True(t, got.IsOpen())
	127	+	}
	128	+	}
	129	+	})
	130	+	}
	131	+	}

M internal/usecase/issues.go +22 -2


@@ -26,6 +26,7 @@ const MaxCommentsPerIssue = 1000
26	26		// issue:write on it, which the branch prefixes of a token do not restrict:
27	27		// an issue writes no ref.
28	28		type Issues struct {
	29	+	links ports.IssueLinkStore
29	30		meta ports.RepoMetaStore
30	31		store ports.IssueStore
31	32		mrs ports.MergeRequestStore

@@ -40,6 +41,7 @@ var (
40	41
41	42		// IssuesConfig holds what the issue use cases need. Every field is required.
42	43		type IssuesConfig struct {
	44	+	Links ports.IssueLinkStore
43	45		Meta ports.RepoMetaStore
44	46		Store ports.IssueStore
45	47		// MergeRequests tells which numbers name a merge request (Kind).

@@ -50,7 +52,7 @@ type IssuesConfig struct {
50	52
51	53		// NewIssues builds the issue use cases.
52	54		func NewIssues(cfg IssuesConfig) *Issues {
53		-	return &Issues{meta: cfg.Meta, store: cfg.Store, mrs: cfg.MergeRequests, bus: cfg.Bus, clock: cfg.Clock}
	55	+	return &Issues{links: cfg.Links, meta: cfg.Meta, store: cfg.Store, mrs: cfg.MergeRequests, bus: cfg.Bus, clock: cfg.Clock}
54	56		}
55	57
56	58		// enabled looks the repository up and hides it when issues are off.

@@ -159,7 +161,24 @@ func (i *Issues) Get(ctx context.Context, p domain.Principal, name domain.RepoNa
159	161		if err != nil {
160	162		return ports.IssueDetail{}, fmt.Errorf("list comments of #%d of %q: %w", number, name, err)
161	163		}
162		-	return ports.IssueDetail{Issue: issue, Comments: comments}, nil
	164	+	detail := ports.IssueDetail{Issue: issue, Comments: comments}
	165	+	if i.links != nil {
	166	+	links, err := i.links.LinksOfIssue(ctx, name, number, MaxIssueLinksPerIssue)
	167	+	if err != nil {
	168	+	return ports.IssueDetail{}, err
	169	+	}
	170	+	for _, link := range links {
	171	+	mr, err := i.mrs.Get(ctx, name, link.MergeRequest)
	172	+	if errors.Is(err, domain.ErrNotFound) {
	173	+	continue
	174	+	}
	175	+	if err != nil {
	176	+	return ports.IssueDetail{}, err
	177	+	}
	178	+	detail.References = append(detail.References, ports.IssueReference{Number: mr.Number, Title: mr.Title, State: mr.State, Closes: link.Closes})
	179	+	}
	180	+	}
	181	+	return detail, nil
163	182		}
164	183
165	184		// AddComment adds a comment and publishes IssueCommented. The principal needs

@@ -251,6 +270,7 @@ func (i *Issues) transition(ctx context.Context, p domain.Principal, name domain
251	270		if issue.State != from {
252	271		return domain.Issue{}, fmt.Errorf("%w: #%d is %s", domain.ErrPreconditionFailed, number, issue.State)
253	272		}
	273	+	issue.ClosedByMergeRequest = 0
254	274		issue.State, issue.UpdatedAt = to, i.clock.Now().UTC()
255	275		err = i.store.Update(ctx, issue)
256	276		if errors.Is(err, domain.ErrConflict) {

 // issue:write on it, which the branch prefixes of a token do not restrict:
 // an issue writes no ref.
 type Issues struct {
+	links ports.IssueLinkStore
 	meta  ports.RepoMetaStore
 	store ports.IssueStore
 	mrs   ports.MergeRequestStore
 // IssuesConfig holds what the issue use cases need. Every field is required.
 type IssuesConfig struct {
+	Links ports.IssueLinkStore
 	Meta  ports.RepoMetaStore
 	Store ports.IssueStore
 	// MergeRequests tells which numbers name a merge request (Kind).
 // NewIssues builds the issue use cases.
 func NewIssues(cfg IssuesConfig) *Issues {
-	return &Issues{meta: cfg.Meta, store: cfg.Store, mrs: cfg.MergeRequests, bus: cfg.Bus, clock: cfg.Clock}
+	return &Issues{links: cfg.Links, meta: cfg.Meta, store: cfg.Store, mrs: cfg.MergeRequests, bus: cfg.Bus, clock: cfg.Clock}
 }
 // enabled looks the repository up and hides it when issues are off.
 	if err != nil {
 		return ports.IssueDetail{}, fmt.Errorf("list comments of #%d of %q: %w", number, name, err)
 	}
-	return ports.IssueDetail{Issue: issue, Comments: comments}, nil
+	detail := ports.IssueDetail{Issue: issue, Comments: comments}
+	if i.links != nil {
+		links, err := i.links.LinksOfIssue(ctx, name, number, MaxIssueLinksPerIssue)
+		if err != nil {
+			return ports.IssueDetail{}, err
+		}
+		for _, link := range links {
+			mr, err := i.mrs.Get(ctx, name, link.MergeRequest)
+			if errors.Is(err, domain.ErrNotFound) {
+				continue
+			}
+			if err != nil {
+				return ports.IssueDetail{}, err
+			}
+			detail.References = append(detail.References, ports.IssueReference{Number: mr.Number, Title: mr.Title, State: mr.State, Closes: link.Closes})
+		}
+	}
+	return detail, nil
 }
 // AddComment adds a comment and publishes IssueCommented. The principal needs
 		if issue.State != from {
 			return domain.Issue{}, fmt.Errorf("%w: #%d is %s", domain.ErrPreconditionFailed, number, issue.State)
 		}
+		issue.ClosedByMergeRequest = 0
 		issue.State, issue.UpdatedAt = to, i.clock.Now().UTC()
 		err = i.store.Update(ctx, issue)
 		if errors.Is(err, domain.ErrConflict) {

M internal/usecase/mergerequests.go +30 -3


@@ -43,6 +43,7 @@ const mrTokenPrefix = "mp1:"
43	43		// merging mr:merge, on the repository (see scopeAccess), and that scope also
44	44		// makes a private repository visible for the action (see writable).
45	45		type MergeRequests struct {
	46	+	links ports.IssueLinkTrigger
46	47		meta ports.RepoMetaStore
47	48		store ports.MergeRequestStore
48	49		repos ports.GitRepos

@@ -77,6 +78,7 @@ var (
77	78		// MergeRequestsConfig holds what the merge request use cases need. Every field
78	79		// is required.
79	80		type MergeRequestsConfig struct {
	81	+	Links ports.IssueLinkTrigger // Optional derived issue links.
80	82		Meta ports.RepoMetaStore
81	83		Store ports.MergeRequestStore
82	84		// Repos gives the default branch of a repository.

@@ -111,7 +113,7 @@ type MergeRequestsConfig struct {
111	113		// NewMergeRequests builds the merge request use cases.
112	114		func NewMergeRequests(cfg MergeRequestsConfig) *MergeRequests {
113	115		return &MergeRequests{
114		-	meta: cfg.Meta, store: cfg.Store, repos: cfg.Repos, git: cfg.Git, signer: cfg.Signer,
	116	+	links: cfg.Links, meta: cfg.Meta, store: cfg.Store, repos: cfg.Repos, git: cfg.Git, signer: cfg.Signer,
115	117		committer: cfg.Committer, bus: cfg.Bus, clock: cfg.Clock, maint: cfg.Maint, ci: cfg.CI, checks: cfg.Checks, pulls: cfg.PullRequests, tips: cfg.RefTips, mergeab: cfg.Mergeability,
116	118		locks: make(map[domain.RepoName]chan struct{}),
117	119		}

@@ -288,6 +290,9 @@ func (m *MergeRequests) Create(ctx context.Context, p domain.Principal, name dom
288	290		}
289	291		recordActivity(ctx, m.meta, repo.Name, now)
290	292		m.bus.Publish(ctx, domain.MergeRequestOpened{MergeRequest: mr, At: now, Visibility: repo.Visibility, CreatedAt: repo.CreatedAt})
	293	+	if m.links != nil {
	294	+	m.links.OnMergeRequestChanged(ctx, repo, mr.Number)
	295	+	}
291	296		if m.mergeab != nil {
292	297		m.mergeab.OnOpened(ctx, mr)
293	298		}

@@ -430,6 +435,9 @@ func (m *MergeRequests) MarkReady(ctx context.Context, p domain.Principal, name
430	435		}
431	436		recordActivity(ctx, m.meta, repo.Name, mr.UpdatedAt)
432	437		m.bus.Publish(ctx, domain.MergeRequestReady{MergeRequest: mr, At: mr.UpdatedAt, Visibility: repo.Visibility, CreatedAt: repo.CreatedAt})
	438	+	if m.links != nil {
	439	+	m.links.OnMergeRequestChanged(ctx, repo, number)
	440	+	}
433	441		return m.withHead(ctx, mr)
434	442		}
435	443		return domain.MergeRequest{}, fmt.Errorf("mark !%d of %q ready: %w", number, name, domain.ErrConflict)

@@ -647,17 +655,24 @@ func (m *MergeRequests) Get(ctx context.Context, p domain.Principal, name domain
647	655		// the head; both are zero when the target is gone or shares no history with
648	656		// the head. A merged or closed request keeps the base it stored for both.
649	657		func (m *MergeRequests) rangeOf(ctx context.Context, mr domain.MergeRequest) (exclude, base domain.ObjectID, err error) {
	658	+	return mrRange(ctx, m.git, mr)
	659	+	}
	660	+
	661	+	func mrRange(ctx context.Context, git ports.MergeGit, mr domain.MergeRequest) (exclude, base domain.ObjectID, err error) {
650	662		if !mr.IsOpen() {
651	663		return mr.BaseID, mr.BaseID, nil
652	664		}
653	665		if mr.HeadID.IsZero() {
654	666		return domain.ObjectID{}, domain.ObjectID{}, nil
655	667		}
656		-	tip, err := m.branchOrZero(ctx, mr.Repo, mr.Target)
	668	+	tip, err := git.BranchHead(ctx, mr.Repo, mr.Target)
	669	+	if errors.Is(err, domain.ErrNotFound) {
	670	+	return domain.ObjectID{}, domain.ObjectID{}, nil
	671	+	}
657	672		if err != nil \|\| tip.IsZero() {
658	673		return domain.ObjectID{}, domain.ObjectID{}, err
659	674		}
660		-	base, err = m.git.MergeBase(ctx, mr.Repo, tip, mr.HeadID)
	675	+	base, err = git.MergeBase(ctx, mr.Repo, tip, mr.HeadID)
661	676		if errors.Is(err, domain.ErrNotFound) {
662	677		return tip, domain.ObjectID{}, nil
663	678		}

@@ -777,6 +792,9 @@ func (m *MergeRequests) AddComment(ctx context.Context, p domain.Principal, name
777	792		m.bus.Publish(ctx, domain.CommentAdded{
778	793		Repo: name, Number: number, Comment: c, At: c.CreatedAt, Visibility: repo.Visibility, CreatedAt: repo.CreatedAt,
779	794		})
	795	+	if m.links != nil {
	796	+	m.links.OnMergeRequestChanged(ctx, repo, number)
	797	+	}
780	798		return c, nil
781	799		}
782	800

@@ -912,6 +930,9 @@ func (m *MergeRequests) Close(ctx context.Context, p domain.Principal, name doma
912	930		Str("principal", p.Label()).Str("token_id", p.TokenID()).Msg("merge request closed")
913	931		recordActivity(ctx, m.meta, repo.Name, mr.UpdatedAt)
914	932		m.bus.Publish(ctx, domain.MergeRequestClosed{MergeRequest: mr, At: mr.UpdatedAt, Visibility: repo.Visibility, CreatedAt: repo.CreatedAt})
	933	+	if m.links != nil {
	934	+	m.links.OnMergeRequestSettled(ctx, repo, mr)
	935	+	}
915	936		if m.pulls != nil {
916	937		m.pulls.OnPullRequest(ctx, name, ports.PullRequestEvent{Number: number, Action: domain.PullClosed, Head: mr.HeadID, Base: mr.BaseID}, p)
917	938		}

@@ -1168,6 +1189,9 @@ func (m *MergeRequests) merge(ctx context.Context, p domain.Principal, name doma
1168	1189		// never returned. mr is the merged request, tip the old target and merged the
1169	1190		// new one.
1170	1191		func (m *MergeRequests) afterMerge(ctx context.Context, p domain.Principal, repo domain.Repo, mr domain.MergeRequest, head, tip, merged domain.ObjectID, deleteSource bool) {
	1192	+	if m.links != nil {
	1193	+	m.links.OnMerged(ctx, p, repo, mr)
	1194	+	}
1171	1195		name := repo.Name
1172	1196		updates := []domain.RefUpdate{{Old: tip.String(), New: merged.String(), Ref: "refs/heads/" + mr.Target}}
1173	1197		if deleteSource && m.deleteSource(ctx, p, name, mr, head) {

@@ -1453,6 +1477,9 @@ func (m *MergeRequests) changeComment(ctx context.Context, p domain.Principal, n
1453	1477		} else {
1454	1478		m.bus.Publish(ctx, domain.CommentEdited{Repo: name, Number: number, Comment: c, At: c.EditedAt, Visibility: repo.Visibility, CreatedAt: repo.CreatedAt})
1455	1479		}
	1480	+	if m.links != nil {
	1481	+	m.links.OnMergeRequestChanged(ctx, repo, number)
	1482	+	}
1456	1483		return c, nil
1457	1484		}
1458	1485		return domain.Comment{}, fmt.Errorf("save note %d of !%d in %q: %w", commentID, number, name, domain.ErrConflict)

 // merging mr:merge, on the repository (see scopeAccess), and that scope also
 // makes a private repository visible for the action (see writable).
 type MergeRequests struct {
+	links     ports.IssueLinkTrigger
 	meta      ports.RepoMetaStore
 	store     ports.MergeRequestStore
 	repos     ports.GitRepos
 // MergeRequestsConfig holds what the merge request use cases need. Every field
 // is required.
 type MergeRequestsConfig struct {
+	Links ports.IssueLinkTrigger // Optional derived issue links.
 	Meta  ports.RepoMetaStore
 	Store ports.MergeRequestStore
 	// Repos gives the default branch of a repository.
 // NewMergeRequests builds the merge request use cases.
 func NewMergeRequests(cfg MergeRequestsConfig) *MergeRequests {
 	return &MergeRequests{
-		meta: cfg.Meta, store: cfg.Store, repos: cfg.Repos, git: cfg.Git, signer: cfg.Signer,
+		links: cfg.Links, meta: cfg.Meta, store: cfg.Store, repos: cfg.Repos, git: cfg.Git, signer: cfg.Signer,
 		committer: cfg.Committer, bus: cfg.Bus, clock: cfg.Clock, maint: cfg.Maint, ci: cfg.CI, checks: cfg.Checks, pulls: cfg.PullRequests, tips: cfg.RefTips, mergeab: cfg.Mergeability,
 		locks: make(map[domain.RepoName]chan struct{}),
 	}
 	}
 	recordActivity(ctx, m.meta, repo.Name, now)
 	m.bus.Publish(ctx, domain.MergeRequestOpened{MergeRequest: mr, At: now, Visibility: repo.Visibility, CreatedAt: repo.CreatedAt})
+	if m.links != nil {
+		m.links.OnMergeRequestChanged(ctx, repo, mr.Number)
+	}
 	if m.mergeab != nil {
 		m.mergeab.OnOpened(ctx, mr)
 	}
 		}
 		recordActivity(ctx, m.meta, repo.Name, mr.UpdatedAt)
 		m.bus.Publish(ctx, domain.MergeRequestReady{MergeRequest: mr, At: mr.UpdatedAt, Visibility: repo.Visibility, CreatedAt: repo.CreatedAt})
+		if m.links != nil {
+			m.links.OnMergeRequestChanged(ctx, repo, number)
+		}
 		return m.withHead(ctx, mr)
 	}
 	return domain.MergeRequest{}, fmt.Errorf("mark !%d of %q ready: %w", number, name, domain.ErrConflict)
 // the head; both are zero when the target is gone or shares no history with
 // the head. A merged or closed request keeps the base it stored for both.
 func (m *MergeRequests) rangeOf(ctx context.Context, mr domain.MergeRequest) (exclude, base domain.ObjectID, err error) {
+	return mrRange(ctx, m.git, mr)
+}
+func mrRange(ctx context.Context, git ports.MergeGit, mr domain.MergeRequest) (exclude, base domain.ObjectID, err error) {
 	if !mr.IsOpen() {
 		return mr.BaseID, mr.BaseID, nil
 	}
 	if mr.HeadID.IsZero() {
 		return domain.ObjectID{}, domain.ObjectID{}, nil
 	}
-	tip, err := m.branchOrZero(ctx, mr.Repo, mr.Target)
+	tip, err := git.BranchHead(ctx, mr.Repo, mr.Target)
+	if errors.Is(err, domain.ErrNotFound) {
+		return domain.ObjectID{}, domain.ObjectID{}, nil
+	}
 	if err != nil || tip.IsZero() {
 		return domain.ObjectID{}, domain.ObjectID{}, err
 	}
-	base, err = m.git.MergeBase(ctx, mr.Repo, tip, mr.HeadID)
+	base, err = git.MergeBase(ctx, mr.Repo, tip, mr.HeadID)
 	if errors.Is(err, domain.ErrNotFound) {
 		return tip, domain.ObjectID{}, nil
 	}
 	m.bus.Publish(ctx, domain.CommentAdded{
 		Repo: name, Number: number, Comment: c, At: c.CreatedAt, Visibility: repo.Visibility, CreatedAt: repo.CreatedAt,
 	})
+	if m.links != nil {
+		m.links.OnMergeRequestChanged(ctx, repo, number)
+	}
 	return c, nil
 }
 			Str("principal", p.Label()).Str("token_id", p.TokenID()).Msg("merge request closed")
 		recordActivity(ctx, m.meta, repo.Name, mr.UpdatedAt)
 		m.bus.Publish(ctx, domain.MergeRequestClosed{MergeRequest: mr, At: mr.UpdatedAt, Visibility: repo.Visibility, CreatedAt: repo.CreatedAt})
+		if m.links != nil {
+			m.links.OnMergeRequestSettled(ctx, repo, mr)
+		}
 		if m.pulls != nil {
 			m.pulls.OnPullRequest(ctx, name, ports.PullRequestEvent{Number: number, Action: domain.PullClosed, Head: mr.HeadID, Base: mr.BaseID}, p)
 		}
 // never returned. mr is the merged request, tip the old target and merged the
 // new one.
 func (m *MergeRequests) afterMerge(ctx context.Context, p domain.Principal, repo domain.Repo, mr domain.MergeRequest, head, tip, merged domain.ObjectID, deleteSource bool) {
+	if m.links != nil {
+		m.links.OnMerged(ctx, p, repo, mr)
+	}
 	name := repo.Name
 	updates := []domain.RefUpdate{{Old: tip.String(), New: merged.String(), Ref: "refs/heads/" + mr.Target}}
 	if deleteSource && m.deleteSource(ctx, p, name, mr, head) {
 		} else {
 			m.bus.Publish(ctx, domain.CommentEdited{Repo: name, Number: number, Comment: c, At: c.EditedAt, Visibility: repo.Visibility, CreatedAt: repo.CreatedAt})
 		}
+		if m.links != nil {
+			m.links.OnMergeRequestChanged(ctx, repo, number)
+		}
 		return c, nil
 	}
 	return domain.Comment{}, fmt.Errorf("save note %d of !%d in %q: %w", commentID, number, name, domain.ErrConflict)

M internal/usecase/pushes.go +7 -0


@@ -17,6 +17,7 @@ import (
17	17
18	18		// Pushes are the use cases around a Git push.
19	19		type Pushes struct {
	20	+	links ports.IssueLinkTrigger
20	21		mirror ports.MirrorTrigger // nil: no outbound mirror
21	22		meta ports.RepoMetaStore
22	23		repos *Repos

@@ -44,6 +45,9 @@ func NewPushes(meta ports.RepoMetaStore, repos *Repos, git ports.GitRepos, bus p
44	45		return &Pushes{meta: meta, repos: repos, git: git, bus: bus, clock: clock, maint: maint, auth: auth}
45	46		}
46	47
	48	+	// WithIssueLinks enables synchronous best-effort issue indexing before the first push.
	49	+	func (u Pushes) WithIssueLinks(t ports.IssueLinkTrigger) Pushes { u.links = t; return u }
	50	+
47	51		// WithMirror makes Record notify outbound mirrors. Call before the first push.
48	52		func (u Pushes) WithMirror(t ports.MirrorTrigger) Pushes {
49	53		u.mirror = t

@@ -265,6 +269,9 @@ func (u *Pushes) Record(ctx context.Context, p domain.Principal, name domain.Rep
265	269		if u.mergeab != nil {
266	270		u.mergeab.OnBranchesMoved(ctx, name, updates) // queues only
267	271		}
	272	+	if u.links != nil {
	273	+	u.links.OnBranchesMoved(ctx, name, updates)
	274	+	}
268	275		u.bus.Publish(ctx, domain.PushEvent{
269	276		Repo: name, Updates: append([]domain.RefUpdate(nil), updates...), At: now,
270	277		Visibility: repo.Visibility, CreatedAt: repo.CreatedAt,


@@ -17,6 +17,7 @@ import (
17		17
18	// Pushes are the use cases around a Git push.	18		// Pushes are the use cases around a Git push.
19	type Pushes struct {	19		type Pushes struct {
		20	+	links ports.IssueLinkTrigger
20	mirror ports.MirrorTrigger // nil: no outbound mirror	21		mirror ports.MirrorTrigger // nil: no outbound mirror
21	meta ports.RepoMetaStore	22		meta ports.RepoMetaStore
22	repos *Repos	23		repos *Repos

@@ -44,6 +45,9 @@ func NewPushes(meta ports.RepoMetaStore, repos *Repos, git ports.GitRepos, bus p
44	return &Pushes{meta: meta, repos: repos, git: git, bus: bus, clock: clock, maint: maint, auth: auth}	45		return &Pushes{meta: meta, repos: repos, git: git, bus: bus, clock: clock, maint: maint, auth: auth}
45	}	46		}
46		47
		48	+	// WithIssueLinks enables synchronous best-effort issue indexing before the first push.
		49	+	func (u Pushes) WithIssueLinks(t ports.IssueLinkTrigger) Pushes { u.links = t; return u }
		50	+
47	// WithMirror makes Record notify outbound mirrors. Call before the first push.	51		// WithMirror makes Record notify outbound mirrors. Call before the first push.
48	func (u Pushes) WithMirror(t ports.MirrorTrigger) Pushes {	52		func (u Pushes) WithMirror(t ports.MirrorTrigger) Pushes {
49	u.mirror = t	53		u.mirror = t

@@ -265,6 +269,9 @@ func (u *Pushes) Record(ctx context.Context, p domain.Principal, name domain.Rep
265	if u.mergeab != nil {	269		if u.mergeab != nil {
266	u.mergeab.OnBranchesMoved(ctx, name, updates) // queues only	270		u.mergeab.OnBranchesMoved(ctx, name, updates) // queues only
267	}	271		}
		272	+	if u.links != nil {
		273	+	u.links.OnBranchesMoved(ctx, name, updates)
		274	+	}
268	u.bus.Publish(ctx, domain.PushEvent{	275		u.bus.Publish(ctx, domain.PushEvent{
269	Repo: name, Updates: append([]domain.RefUpdate(nil), updates...), At: now,	276		Repo: name, Updates: append([]domain.RefUpdate(nil), updates...), At: now,
270	Visibility: repo.Visibility, CreatedAt: repo.CreatedAt,	277		Visibility: repo.Visibility, CreatedAt: repo.CreatedAt,