c1fe923131
* Split vkubelet funcitons into separate files. * Minor re-org for cmd/census* * refactor run loop
70 lines
2.0 KiB
Go
70 lines
2.0 KiB
Go
package cmd
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import (
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"context"
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"net/http"
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"os"
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"github.com/cpuguy83/strongerrors"
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"github.com/pkg/errors"
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"github.com/virtual-kubelet/virtual-kubelet/log"
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"go.opencensus.io/trace"
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"go.opencensus.io/zpages"
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)
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var (
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tracingExporters = make(map[string]TracingExporterInitFunc)
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reservedTagNames = map[string]bool{
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"operatingSystem": true,
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"provider": true,
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"nodeName": true,
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}
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)
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// TracingExporterOptions is used to pass options to the configured tracer
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type TracingExporterOptions struct {
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Tags map[string]string
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ServiceName string
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}
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// TracingExporterInitFunc is the function that is called to initialize an exporter.
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// This is used when registering an exporter and called when a user specifed they want to use the exporter.
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type TracingExporterInitFunc func(TracingExporterOptions) (trace.Exporter, error)
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// RegisterTracingExporter registers a tracing exporter.
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// For a user to select an exporter, it must be registered here.
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func RegisterTracingExporter(name string, f TracingExporterInitFunc) {
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tracingExporters[name] = f
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}
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// GetTracingExporter gets the specified tracing exporter passing in the options to the exporter init function.
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// For an exporter to be availbale here it must be registered with `RegisterTracingExporter`.
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func GetTracingExporter(name string, opts TracingExporterOptions) (trace.Exporter, error) {
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f, ok := tracingExporters[name]
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if !ok {
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return nil, strongerrors.NotFound(errors.Errorf("tracing exporter %q not found", name))
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}
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return f(opts)
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}
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// AvailableTraceExporters gets the list of registered exporters
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func AvailableTraceExporters() []string {
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out := make([]string, 0, len(tracingExporters))
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for k := range tracingExporters {
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out = append(out, k)
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}
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return out
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}
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func setupZpages() {
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ctx := context.TODO()
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p := os.Getenv("ZPAGES_PORT")
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if p == "" {
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log.G(ctx).Error("Missing ZPAGES_PORT env var, cannot setup zpages endpoint")
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}
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mux := http.NewServeMux()
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zpages.Handle(mux, "/debug")
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http.ListenAndServe(p, mux)
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}
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