Soam Vasani
eccde4fe74
Label all poolmgr-created resources with an id that's unique to a running poolmgr instance. On poolmgr start up, clean up resources created by old instances. Resources that are idle are killed immediately; resources that could be running a user function are killed after the maximum function timeout.
71 lines
1.9 KiB
Go
71 lines
1.9 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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"log"
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"strings"
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"github.com/dchest/uniuri"
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"k8s.io/client-go/1.5/kubernetes"
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"k8s.io/client-go/1.5/rest"
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controllerclient "github.com/fission/fission/controller/client"
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)
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// Get a kubernetes client using the pod's service account. This only
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// works when we're running inside a kubernetes cluster.
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func getKubernetesClient() (*kubernetes.Clientset, error) {
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// creates the in-cluster config
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config, err := rest.InClusterConfig()
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if err != nil {
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log.Printf("Error getting kubernetes client config: %v", err)
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return nil, err
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}
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// creates the clientset
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clientset, err := kubernetes.NewForConfig(config)
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if err != nil {
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log.Printf("Error getting kubernetes client: %v", err)
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return nil, err
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}
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return clientset, nil
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}
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func StartPoolmgr(controllerUrl string, namespace string, port int) error {
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controllerUrl = strings.TrimSuffix(controllerUrl, "/")
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controllerClient := controllerclient.MakeClient(controllerUrl)
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kubernetesClient, err := getKubernetesClient()
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if err != nil {
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log.Printf("Failed to get kubernetes client: %v", err)
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return err
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}
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instanceId := uniuri.NewLen(8)
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cleanupOldPoolmgrResources(kubernetesClient, namespace, instanceId)
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fsCache := MakeFunctionServiceCache()
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gpm := MakeGenericPoolManager(controllerUrl, kubernetesClient, namespace, fsCache, instanceId)
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api := MakeAPI(gpm, controllerClient, fsCache)
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go api.Serve(port)
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return nil
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}
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