57 lines
1.7 KiB
Go
57 lines
1.7 KiB
Go
/*
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Copyright The containerd 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 commands
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import (
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gocontext "context"
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"github.com/containerd/containerd"
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"github.com/containerd/containerd/namespaces"
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"github.com/urfave/cli"
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)
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// AppContext returns the context for a command. Should only be called once per
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// command, near the start.
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//
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// This will ensure the namespace is picked up and set the timeout, if one is
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// defined.
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func AppContext(context *cli.Context) (gocontext.Context, gocontext.CancelFunc) {
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var (
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ctx = gocontext.Background()
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timeout = context.GlobalDuration("timeout")
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namespace = context.GlobalString("namespace")
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cancel gocontext.CancelFunc
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)
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ctx = namespaces.WithNamespace(ctx, namespace)
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if timeout > 0 {
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ctx, cancel = gocontext.WithTimeout(ctx, timeout)
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} else {
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ctx, cancel = gocontext.WithCancel(ctx)
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}
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return ctx, cancel
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}
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// NewClient returns a new containerd client
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func NewClient(context *cli.Context) (*containerd.Client, gocontext.Context, gocontext.CancelFunc, error) {
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client, err := containerd.New(context.GlobalString("address"))
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if err != nil {
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return nil, nil, nil, err
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}
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ctx, cancel := AppContext(context)
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return client, ctx, cancel, nil
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}
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