88516546fa
The old system with vendor/ and git submodules worked great, unfortunately FUD around git submodules seemed to scare people away and golang moved to a go.mod system that adds a new lock file format instead of using the built-in git version. It's now almost impossible to use modern golang without this, so we've switched. So much for the golang compatibility promise-- turns out it doesn't apply to the useful parts that I actually care about like this. Thanks to frebib for his incredibly valuable contributions to this patch. This snide commit message is mine alone. This patch also mixes in some changes due to legacy golang as we've also bumped the minimum version to 1.16 in the docs and tests. Lastly, we had to disable some tests and fix up a few other misc things to get this passing. We've definitely hot bugs in the go.mod system, and our Makefile tries to workaround those.
50 lines
1.9 KiB
Go
50 lines
1.9 KiB
Go
// Mgmt
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// Copyright (C) 2013-2021+ 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/client/v3"
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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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