65aaa607ab
Change made by: - running "gvt fetch" on each of the packages mentioned in Godeps/Godeps.json - `rm -rf Godeps` - tweaking the build scripts to not mention Godeps - tweaking the build scripts to test `./lib/...`, `./cmd/...` explicitly (to avoid testing vendor) - tweaking the build scripts to not juggle GOPATH for Godeps and instead set GO15VENDOREXPERIMENT. This also results in some updated packages at the same time I bet. Building with Go 1.3 and 1.4 still *works* but won't use our vendored dependencies - the user needs to have the actual packages in their GOPATH then, which they'll get with a normal "go get". Building with Go 1.6+ will get our vendored dependencies by default even when not using our build script, which is nice. By doing this we gain some freedom in that we can pick and choose manually what to include in vendor, as it's not based on just dependency analysis of our own code. This is also a risk as we might pick up dependencies we are unaware of, as the build may work locally with those packages present in GOPATH. On the other hand the build server will detect this as it has no packages in it's GOPATH beyond what is included in the repo. Recommended tool to manage dependencies is github.com/FiloSottile/gvt.
62 lines
1.5 KiB
Go
62 lines
1.5 KiB
Go
package metrics
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// Healthchecks hold an error value describing an arbitrary up/down status.
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type Healthcheck interface {
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Check()
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Error() error
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Healthy()
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Unhealthy(error)
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}
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// NewHealthcheck constructs a new Healthcheck which will use the given
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// function to update its status.
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func NewHealthcheck(f func(Healthcheck)) Healthcheck {
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if UseNilMetrics {
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return NilHealthcheck{}
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}
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return &StandardHealthcheck{nil, f}
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}
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// NilHealthcheck is a no-op.
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type NilHealthcheck struct{}
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// Check is a no-op.
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func (NilHealthcheck) Check() {}
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// Error is a no-op.
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func (NilHealthcheck) Error() error { return nil }
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// Healthy is a no-op.
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func (NilHealthcheck) Healthy() {}
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// Unhealthy is a no-op.
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func (NilHealthcheck) Unhealthy(error) {}
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// StandardHealthcheck is the standard implementation of a Healthcheck and
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// stores the status and a function to call to update the status.
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type StandardHealthcheck struct {
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err error
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f func(Healthcheck)
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}
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// Check runs the healthcheck function to update the healthcheck's status.
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func (h *StandardHealthcheck) Check() {
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h.f(h)
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}
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// Error returns the healthcheck's status, which will be nil if it is healthy.
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func (h *StandardHealthcheck) Error() error {
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return h.err
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}
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// Healthy marks the healthcheck as healthy.
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func (h *StandardHealthcheck) Healthy() {
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h.err = nil
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}
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// Unhealthy marks the healthcheck as unhealthy. The error is stored and
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// may be retrieved by the Error method.
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func (h *StandardHealthcheck) Unhealthy(err error) {
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h.err = err
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}
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