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If two `helm upgrade`s are executed at the exact same time, then one of the invocations will fail with "already exists". If one `helm upgrade` is executed and a second one is started while the first is in `pending-upgrade`, then the second invocation will create a new release. Effectively, two helm invocations will simultaneously change the state of Kubernetes resources -- which is scary -- then two releases will be in `deployed` state -- which can cause other issues. This commit fixes the corrupted storage problem, by introducting a poor person's lock. If the last release is in a pending state, then helm will abort. If the last release is in a pending state, due to a previously killed helm, then the user is expected to do `helm rollback`. Closes #7274 Signed-off-by: Cristian Klein <cristian.klein@elastisys.com>
49 lines
2 KiB
Go
49 lines
2 KiB
Go
/*
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Copyright The Helm 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 release
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// Status is the status of a release
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type Status string
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// Describe the status of a release
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// NOTE: Make sure to update cmd/helm/status.go when adding or modifying any of these statuses.
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const (
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// StatusUnknown indicates that a release is in an uncertain state.
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StatusUnknown Status = "unknown"
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// StatusDeployed indicates that the release has been pushed to Kubernetes.
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StatusDeployed Status = "deployed"
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// StatusUninstalled indicates that a release has been uninstalled from Kubernetes.
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StatusUninstalled Status = "uninstalled"
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// StatusSuperseded indicates that this release object is outdated and a newer one exists.
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StatusSuperseded Status = "superseded"
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// StatusFailed indicates that the release was not successfully deployed.
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StatusFailed Status = "failed"
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// StatusUninstalling indicates that a uninstall operation is underway.
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StatusUninstalling Status = "uninstalling"
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// StatusPendingInstall indicates that an install operation is underway.
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StatusPendingInstall Status = "pending-install"
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// StatusPendingUpgrade indicates that an upgrade operation is underway.
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StatusPendingUpgrade Status = "pending-upgrade"
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// StatusPendingRollback indicates that an rollback operation is underway.
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StatusPendingRollback Status = "pending-rollback"
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)
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func (x Status) String() string { return string(x) }
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// IsPending determines if this status is a state or a transition.
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func (x Status) IsPending() bool {
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return x == StatusPendingInstall || x == StatusPendingUpgrade || x == StatusPendingRollback
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}
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