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context.go
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/
context.go
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/*
* Copyright 2023 Wang Min Xiang
*
* 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 runtime
import (
"fmt"
"github.com/aacfactory/errors"
"github.com/aacfactory/fns/barriers"
"github.com/aacfactory/fns/commons/versions"
"github.com/aacfactory/fns/context"
"github.com/aacfactory/fns/services"
"github.com/aacfactory/fns/shareds"
"github.com/aacfactory/workers"
"time"
)
var (
contextKey = []byte("@fns:context:runtime")
)
func With(ctx context.Context, rt *Runtime) context.Context {
ctx.SetLocalValue(contextKey, rt)
return ctx
}
func Load(ctx context.Context) *Runtime {
v := ctx.LocalValue(contextKey)
if v == nil {
panic(fmt.Sprintf("%+v", errors.Warning("fns: there is no runtime in context")))
return nil
}
rt, ok := v.(*Runtime)
if !ok {
panic(fmt.Sprintf("%+v", errors.Warning("fns: runtime in context is not github.com/aacfactory/fns/runtime.Runtime")))
return nil
}
return rt
}
func AppId(ctx context.Context) []byte {
return Load(ctx).AppId()
}
func AppName(ctx context.Context) string {
return Load(ctx).AppName()
}
func AppVersion(ctx context.Context) versions.Version {
return Load(ctx).AppVersion()
}
func Endpoints(ctx context.Context) services.Endpoints {
rt := Load(ctx)
return rt.Endpoints()
}
func TryExecute(ctx context.Context, task workers.Task) bool {
rt := Load(ctx)
return rt.TryExecute(context.TODO(), task)
}
func Execute(ctx context.Context, task workers.Task) {
rt := Load(ctx)
rt.Execute(context.TODO(), task)
}
func Barrier(ctx context.Context, key []byte, fn func() (result interface{}, err error)) (result barriers.Result, err error) {
rt := Load(ctx)
barrier := rt.Barrier()
result, err = barrier.Do(ctx, key, fn)
return
}
func AcquireLocker(ctx context.Context, key []byte, ttl time.Duration) (locker shareds.Locker, err error) {
rt := Load(ctx)
locker, err = rt.Shared().Lockers().Acquire(ctx, key, ttl)
return
}
func SharedStore(ctx context.Context) (store shareds.Store) {
rt := Load(ctx)
store = rt.Shared().Store()
return
}