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- updated go-ctxgroup and goprocess ctxgroup: AddChildGroup was changed to AddChild. Used in two files: - p2p/net/mock/mock_net.go - routing/dht/dht.go - updated context from hg repo to git prev. commit in hg was ad01a6fcc8a19d3a4478c836895ffe883bd2ceab. (context: make parentCancelCtx iterative) represents commit 84f8955a887232b6308d79c68b8db44f64df455c in git repo - updated context to master (b6fdb7d8a4ccefede406f8fe0f017fb58265054c) Aaron Jacobs (2): net/context: Don't accept a context in the DoSomethingSlow example. context: Be clear that users must cancel the result of WithCancel. Andrew Gerrand (1): go.net: use golang.org/x/... import paths Bryan C. Mills (1): net/context: Don't leak goroutines in Done example. Damien Neil (1): context: fix removal of cancelled timer contexts from parent David Symonds (2): context: Fix WithValue example code. net: add import comments. Sameer Ajmani (1): context: fix TestAllocs to account for ints in interfaces
36 lines
1.1 KiB
Go
36 lines
1.1 KiB
Go
package util
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import (
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context "github.com/jbenet/go-ipfs/Godeps/_workspace/src/golang.org/x/net/context"
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)
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// privateChanType protects the channel. Since this is a package-private type,
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// only methods defined in this package can get the error value from the
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// context.
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type privateChanType chan error
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const errLogKey = "the key used to extract the error log from the context"
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// ContextWithErrorLog returns a copy of parent and an error channel that can
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// be used to receive errors sent with the LogError method.
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func ContextWithErrorLog(parent context.Context) (context.Context, <-chan error) {
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errs := make(privateChanType)
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ctx := context.WithValue(parent, errLogKey, errs)
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return ctx, errs
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}
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// LogError logs the error to the owner of the context.
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//
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// If this context was created with ContextWithErrorLog, then this method
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// passes the error to context creator over an unbuffered channel.
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//
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// If this context was created by other means, this method is a no-op.
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func LogError(ctx context.Context, err error) {
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v := ctx.Value(errLogKey)
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errs, ok := v.(privateChanType)
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if !ok {
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return
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}
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errs <- err
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}
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