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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| /* | ||
| Copyright 2020 The Knative Authors | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package adapter | ||
|
|
||
| import ( | ||
| "context" | ||
| ) | ||
|
|
||
| type haEnabledKey struct{} | ||
|
|
||
| // WithHAEnabled signals to MainWithContext that it should set up an appropriate leader elector for this component. | ||
| func WithHAEnabled(ctx context.Context) context.Context { | ||
| return context.WithValue(ctx, haEnabledKey{}, struct{}{}) | ||
| } | ||
|
|
||
| // IsHAEnabled checks the context for the desire to enable leader elector. | ||
| func IsHAEnabled(ctx context.Context) bool { | ||
| val := ctx.Value(haEnabledKey{}) | ||
| return val != nil | ||
| } | ||
|
|
||
| type haDisabledFlagKey struct{} | ||
|
|
||
| // withHADisabledFlag signals to MainWithConfig that it should not set up an appropriate leader elector for this component. | ||
| func withHADisabledFlag(ctx context.Context) context.Context { | ||
| return context.WithValue(ctx, haDisabledFlagKey{}, struct{}{}) | ||
| } | ||
|
|
||
| // isHADisabledFlag checks the context for the desired to disable leader elector. | ||
| func isHADisabledFlag(ctx context.Context) bool { | ||
| val := ctx.Value(haDisabledFlagKey{}) | ||
| return val != nil | ||
| } | ||
|
|
||
| type controllerKey struct{} | ||
|
|
||
| // WithController signals to MainWithContext that it should | ||
| // create and configure a controller notifying the adapter | ||
| // when a resource is ready and removed | ||
| func WithController(ctx context.Context, ctor ControllerConstructor) context.Context { | ||
| return context.WithValue(ctx, controllerKey{}, ctor) | ||
| } | ||
|
|
||
| // ControllerFromContext gets the controller constructor from the context | ||
| func ControllerFromContext(ctx context.Context) ControllerConstructor { | ||
| value := ctx.Value(controllerKey{}) | ||
| if value == nil { | ||
| return nil | ||
| } | ||
| return value.(ControllerConstructor) | ||
| } |
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