55 lines
1.4 KiB
Go
55 lines
1.4 KiB
Go
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package feature_test
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import (
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"flag"
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"fmt"
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"go-common/library/exp/feature"
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)
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var (
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AStableFeature feature.Feature = "a-stable-feature"
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AStagingFeature feature.Feature = "a-staging-feature"
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)
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var exampleFeatures = map[feature.Feature]feature.Spec{
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AStableFeature: feature.Spec{Default: true},
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AStagingFeature: feature.Spec{Default: false},
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}
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func init() {
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feature.DefaultGate.Add(exampleFeatures)
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feature.DefaultGate.AddFlag(flag.CommandLine)
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}
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// This example create an example to using default features.
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func Example() {
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knows := feature.DefaultGate.KnownFeatures()
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fmt.Println(knows)
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enabled := feature.DefaultGate.Enabled(AStableFeature)
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fmt.Println(enabled)
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enabled = feature.DefaultGate.Enabled(AStagingFeature)
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fmt.Println(enabled)
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// Output: [a-stable-feature=true|false (default=true) a-staging-feature=true|false (default=false)]
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// true
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// false
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}
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// This example parsing flag from command line and enable a staging feature.
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func ExampleFeature() {
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knows := feature.DefaultGate.KnownFeatures()
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fmt.Println(knows)
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enabled := feature.DefaultGate.Enabled(AStagingFeature)
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fmt.Println(enabled)
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flag.Set("feature-gates", fmt.Sprintf("%s=true", AStagingFeature))
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enabled = feature.DefaultGate.Enabled(AStagingFeature)
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fmt.Println(enabled)
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// Output: [a-stable-feature=true|false (default=true) a-staging-feature=true|false (default=false)]
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// false
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// true
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}
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