forked from rook/rook
62 lines
1.9 KiB
Go
62 lines
1.9 KiB
Go
/*
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Copyright 2016 The Rook Authors. All rights reserved.
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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 bootstrap
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import "fmt"
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// GetEtcdClients bootstraps an embedded etcd instance and returns a list of
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// current etcd cluster's client URLs. (entrypoint, when it's used as a library)
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func GetEtcdClients(configDir, token, ipAddr, nodeID string) ([]string, error) {
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full, currentNodes, err := isQuorumFull(token)
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if err != nil {
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return nil, fmt.Errorf("error querying discovery service. %+v", err)
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}
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logger.Infof("current etcd cluster nodes: %+v", currentNodes)
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localURL := fmt.Sprintf("http://%s:%d", ipAddr, DefaultClientPort)
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// Is it a restart scenario?
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restart := false
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logger.Infof("current localURL: %s", localURL)
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for _, node := range currentNodes {
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if node == localURL {
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logger.Infof("restart scenario detected.")
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restart = true
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}
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}
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if full && !restart {
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logger.Infof("quorum is already formed, returning current cluster members: %+v", currentNodes)
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return currentNodes, nil
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}
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logger.Infof("quorum is not complete, creating a new embedded etcd member...")
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conf, err := generateConfig(configDir, ipAddr, nodeID)
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if err != nil {
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return []string{}, err
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}
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logger.Infof("conf: %+v", conf)
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factory := EmbeddedEtcdFactory{}
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ee, err := factory.NewEmbeddedEtcd(token, conf, true)
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if err != nil {
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return nil, fmt.Errorf("failed to start embedded etcd. %+v", err)
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}
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return ee.Server.Cluster().ClientURLs(), nil
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}
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