yang qfandSoam Vasani
ce4d3ac42d
Modifies function specialization so that concurrent requests for the same function cause only one pod to be created.
57 lines
1.4 KiB
Go
57 lines
1.4 KiB
Go
/*
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Copyright 2016 The Fission Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package router
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import (
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"log"
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"net/url"
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"time"
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"github.com/fission/fission"
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"github.com/fission/fission/cache"
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)
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type functionServiceMap struct {
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cache *cache.Cache // map[fission.Metadata]*url.URL
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}
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func makeFunctionServiceMap(expiry time.Duration) *functionServiceMap {
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return &functionServiceMap{
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cache: cache.MakeCache(expiry, 0),
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}
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}
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func (fmap *functionServiceMap) lookup(f *fission.Metadata) (*url.URL, error) {
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item, err := fmap.cache.Get(*f)
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if err != nil {
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return nil, err
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}
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u := item.(*url.URL)
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return u, nil
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}
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func (fmap *functionServiceMap) assign(f *fission.Metadata, serviceUrl *url.URL) {
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err, old := fmap.cache.Set(*f, serviceUrl)
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if err != nil {
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if *serviceUrl == *(old.(*url.URL)) {
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return
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}
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log.Printf("error caching service url for function with a different value: %v", err)
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// ignore error
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}
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}
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