Soam Vasani
bb687d3e98
:= attempts to declare as many of the variables on its left side as it
can, instead of re-using as many as it can. Consider this code:
a, ok := foo()
if !ok {
a, err := bar()
...
}
The inner 'a' is a different var from the outer one, and goes out of
scope at the }. The outer 'a' is left with whatever value foo()
returned.
80 lines
2.1 KiB
Go
80 lines
2.1 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 poolmgr
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import (
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"github.com/platform9/fission"
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"k8s.io/client-go/1.4/kubernetes"
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)
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type (
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GenericPoolManager struct {
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pools map[fission.Environment]*GenericPool
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kubernetesClient *kubernetes.Clientset
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namespace string
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controllerUrl string
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requestChannel chan *request
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}
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request struct {
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env *fission.Environment
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responseChannel chan *response
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}
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response struct {
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error
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pool *GenericPool
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}
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)
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func MakeGenericPoolManager(controllerUrl string, kubernetesClient *kubernetes.Clientset, namespace string) *GenericPoolManager {
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gpm := &GenericPoolManager{
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pools: make(map[fission.Environment]*GenericPool),
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kubernetesClient: kubernetesClient,
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namespace: namespace,
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controllerUrl: controllerUrl,
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requestChannel: make(chan *request),
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}
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go gpm.service()
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return gpm
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}
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func (gpm *GenericPoolManager) service() {
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for {
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select {
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case req := <-gpm.requestChannel:
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var err error
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pool, ok := gpm.pools[*req.env]
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if !ok {
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pool, err = MakeGenericPool(gpm.controllerUrl, gpm.kubernetesClient, req.env, 3, gpm.namespace)
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if err != nil {
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req.responseChannel <- &response{error: err}
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continue
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}
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gpm.pools[*req.env] = pool
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}
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req.responseChannel <- &response{pool: pool}
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}
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}
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}
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func (gpm *GenericPoolManager) GetPool(env *fission.Environment) (*GenericPool, error) {
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c := make(chan *response)
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gpm.requestChannel <- &request{env: env, responseChannel: c}
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resp := <-c
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return resp.pool, resp.error
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}
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