e73007c398
This moves to the newest etcd release, and also updates the imports to the new go.etcd.io path. I think this is a bit of a pain, but might as well get it done.
50 lines
1.9 KiB
Go
50 lines
1.9 KiB
Go
// Mgmt
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// Copyright (C) 2013-2019+ James Shubin and the project contributors
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// Written by James Shubin <james@shubin.ca> and the project contributors
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package etcd
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import (
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"context"
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"fmt"
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"github.com/purpleidea/mgmt/util/errwrap"
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etcd "go.etcd.io/etcd/clientv3"
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)
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// setHostnameConverged sets whether a specific hostname is converged.
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func (obj *EmbdEtcd) setHostnameConverged(ctx context.Context, hostname string, isConverged bool) error {
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if obj.Debug {
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obj.Logf("setHostnameConverged(%s): %t", hostname, isConverged)
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defer obj.Logf("setHostnameConverged(%s): done!", hostname)
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}
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key := fmt.Sprintf(obj.NS+convergedPathFmt, hostname)
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data := fmt.Sprintf("%t", isConverged)
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// XXX: bug: https://github.com/etcd-io/etcd/issues/10566
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// XXX: reverse things with els to workaround the bug :(
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//ifs := []etcd.Cmp{etcd.Compare(etcd.Value(key), "!=", data)} // desired state
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//ops := []etcd.Op{etcd.OpPut(key, data, etcd.WithLease(obj.leaseID))}
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ifs := []etcd.Cmp{etcd.Compare(etcd.Value(key), "=", data)} // desired state
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ifs = append(ifs, etcd.Compare(etcd.LeaseValue(key), "=", obj.leaseID))
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els := []etcd.Op{etcd.OpPut(key, data, etcd.WithLease(obj.leaseID))}
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_, err := obj.client.Txn(ctx, ifs, nil, els)
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return errwrap.Wrapf(err, "set hostname converged failed")
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}
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