1 files changed, 20 insertions, 0 deletions
diff --git a/modules/migrations/base/issue.go b/modules/migrations/base/issue.go
index 8b1b461244..7addd1336a 100644
--- a/modules/migrations/base/issue.go
+++ b/modules/migrations/base/issue.go
@@ -7,6 +7,25 @@ package base
 
 import "time"
 
+// IssueContext is used to map between local and foreign issue/PR ids.
+type IssueContext interface {
+	LocalID() int64
+	ForeignID() int64
+}
+
+// BasicIssueContext is a 1:1 mapping between local and foreign ids.
+type BasicIssueContext int64
+
+// LocalID gets the local id.
+func (c BasicIssueContext) LocalID() int64 {
+	return int64(c)
+}
+
+// ForeignID gets the foreign id.
+func (c BasicIssueContext) ForeignID() int64 {
+	return int64(c)
+}
+
 // Issue is a standard issue information
 type Issue struct {
 	Number      int64
@@ -25,4 +44,5 @@ type Issue struct {
 	Labels      []*Label
 	Reactions   []*Reaction
 	Assignees   []string
+	Context     IssueContext `yaml:"-"`
 }