289b30715d
This commit converts the dependency management from Godeps to the vendor folder, also switching the tool from godep to trash. Since the upstream tool lacks a few features proposed via a few PRs, until those PRs are merged in (if), use github.com/karalabe/trash. You can update dependencies via trash --update. All dependencies have been updated to their latest version. Parts of the build system are reworked to drop old notions of Godeps and invocation of the go vet command so that it doesn't run against the vendor folder, as that will just blow up during vetting. The conversion drops OpenCL (and hence GPU mining support) from ethash and our codebase. The short reasoning is that there's noone to maintain and having opencl libs in our deps messes up builds as go install ./... tries to build them, failing with unsatisfied link errors for the C OpenCL deps. golang.org/x/net/context is not vendored in. We expect it to be fetched by the user (i.e. using go get). To keep ci.go builds reproducible the package is "vendored" in build/_vendor.
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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