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remove.go
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remove.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 caches
import (
"fmt"
"github.com/aacfactory/errors"
"github.com/aacfactory/fns/commons/bytex"
"github.com/aacfactory/fns/context"
"github.com/aacfactory/fns/runtime"
"github.com/aacfactory/fns/services"
)
func Remove(ctx context.Context, param interface{}) (err error) {
if param == nil {
err = errors.Warning("fns: remove cache failed").WithCause(fmt.Errorf("param is nil"))
return
}
kp, ok := param.(KeyParam)
if !ok {
err = errors.Warning("fns: remove cache failed").WithCause(fmt.Errorf("param dose not implement caches.KeyParam"))
return
}
key, keyErr := kp.CacheKey(ctx)
if keyErr != nil {
err = errors.Warning("fns: remove cache failed").WithCause(keyErr)
return
}
eps := runtime.Endpoints(ctx)
_, doErr := eps.Request(ctx, endpointName, remFnName, removeFnParam{
Key: bytex.ToString(key),
}, services.WithInternalRequest())
if doErr != nil {
err = doErr
return
}
return
}
type removeFnParam struct {
Key string `json:"key" avro:"key"`
}
type removeFn struct {
store Store
}
func (fn *removeFn) Name() string {
return string(remFnName)
}
func (fn *removeFn) Internal() bool {
return true
}
func (fn *removeFn) Readonly() bool {
return false
}
func (fn *removeFn) Handle(r services.Request) (v interface{}, err error) {
if !r.Param().Valid() {
err = errors.Warning("fns: remove cache failed").WithCause(errors.Warning("param is invalid"))
return
}
param, paramErr := services.ValueOfParam[removeFnParam](r.Param())
if paramErr != nil {
err = errors.Warning("fns: remove cache failed").WithCause(paramErr)
return
}
key := bytex.FromString(param.Key)
if len(key) == 0 {
err = errors.Warning("fns: remove cache failed").WithCause(errors.Warning("param is invalid"))
return
}
removeErr := fn.store.Remove(r, key)
if removeErr != nil {
err = errors.Warning("fns: remove cache failed").WithCause(removeErr)
return
}
return
}