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bf22aeec0a
- Modified Godeps/Godeps.json by hand - [TEST] Updated welcome docs hash to sharness - [TEST] Updated contact doc - [TEST] disabled breaking test (t0080-repo refs local)
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/ipfs/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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