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authorMatthew Holt <[email protected]>2019-05-29 23:10:12 -0600
committerMatthew Holt <[email protected]>2019-05-29 23:10:12 -0600
commit1b6b422c638532d49e697242d9fcf1aa0c3fdc53 (patch)
tree138bc8c3a03907b0bb207b8f4daf9d73197e9d4e /context.go
parent2265db9028a070d4013b8db9708ca4ae9294763b (diff)
downloadcaddy-1b6b422c638532d49e697242d9fcf1aa0c3fdc53.tar.gz
caddy-1b6b422c638532d49e697242d9fcf1aa0c3fdc53.zip
Add cleanup callbacks to context
Diffstat (limited to 'context.go')
-rw-r--r--context.go10
1 files changed, 10 insertions, 0 deletions
diff --git a/context.go b/context.go
index dab603e8e..dcfb09f1f 100644
--- a/context.go
+++ b/context.go
@@ -24,6 +24,7 @@ type Context struct {
context.Context
moduleInstances map[string][]interface{}
cfg *Config
+ cleanupFuncs []func()
}
// NewContext provides a new context derived from the given
@@ -40,6 +41,10 @@ func NewContext(ctx Context) (Context, context.CancelFunc) {
wrappedCancel := func() {
cancel()
+ for _, f := range ctx.cleanupFuncs {
+ f()
+ }
+
for modName, modInstances := range newCtx.moduleInstances {
for _, inst := range modInstances {
if cu, ok := inst.(CleanerUpper); ok {
@@ -55,6 +60,11 @@ func NewContext(ctx Context) (Context, context.CancelFunc) {
return newCtx, wrappedCancel
}
+// OnCancel executes f when ctx is cancelled.
+func (ctx *Context) OnCancel(f func()) {
+ ctx.cleanupFuncs = append(ctx.cleanupFuncs, f)
+}
+
// LoadModule decodes rawMsg into a new instance of mod and
// returns the value. If mod.New() does not return a pointer
// value, it is converted to one so that it is unmarshaled