43704ca888
Add a common NRI 'service' plugin. It takes care of relaying requests and respones to and from NRI (external NRI plugins) and the high-level containerd namespace-independent logic of applying NRI container adjustments and updates to actual CRI and other containers. The namespace-dependent details of the necessary container manipulation operations are to be implemented by namespace- specific adaptations. This NRI plugin defines the API which such adaptations need to implement. Signed-off-by: Krisztian Litkey <krisztian.litkey@intel.com>
104 lines
2.7 KiB
Go
104 lines
2.7 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 api
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import (
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rspec "github.com/opencontainers/runtime-spec/specs-go"
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)
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// Append appends the given hooks to the existing ones.
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func (hooks *Hooks) Append(h *Hooks) *Hooks {
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if h == nil {
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return hooks
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}
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hooks.Prestart = append(hooks.Prestart, h.Prestart...)
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hooks.CreateRuntime = append(hooks.CreateRuntime, h.CreateRuntime...)
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hooks.CreateContainer = append(hooks.CreateContainer, h.CreateContainer...)
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hooks.StartContainer = append(hooks.StartContainer, h.StartContainer...)
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hooks.Poststart = append(hooks.Poststart, h.Poststart...)
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hooks.Poststop = append(hooks.Poststop, h.Poststop...)
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return hooks
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}
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// Hooks returns itself it any of its hooks is set. Otherwise it returns nil.
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func (hooks *Hooks) Hooks() *Hooks {
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if hooks == nil {
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return nil
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}
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if len(hooks.Prestart) > 0 {
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return hooks
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}
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if len(hooks.CreateRuntime) > 0 {
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return hooks
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}
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if len(hooks.CreateContainer) > 0 {
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return hooks
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}
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if len(hooks.StartContainer) > 0 {
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return hooks
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}
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if len(hooks.Poststart) > 0 {
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return hooks
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}
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if len(hooks.Poststop) > 0 {
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return hooks
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}
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return nil
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}
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// ToOCI returns the hook for an OCI runtime Spec.
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func (h *Hook) ToOCI() rspec.Hook {
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return rspec.Hook{
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Path: h.Path,
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Args: DupStringSlice(h.Args),
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Env: DupStringSlice(h.Env),
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Timeout: h.Timeout.Get(),
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}
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}
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// FromOCIHooks returns hooks from an OCI runtime Spec.
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func FromOCIHooks(o *rspec.Hooks) *Hooks {
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if o == nil {
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return nil
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}
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return &Hooks{
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Prestart: FromOCIHookSlice(o.Prestart),
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CreateRuntime: FromOCIHookSlice(o.CreateRuntime),
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CreateContainer: FromOCIHookSlice(o.CreateContainer),
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StartContainer: FromOCIHookSlice(o.StartContainer),
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Poststart: FromOCIHookSlice(o.Poststart),
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Poststop: FromOCIHookSlice(o.Poststop),
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}
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}
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// FromOCIHookSlice returns a hook slice from an OCI runtime Spec.
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func FromOCIHookSlice(o []rspec.Hook) []*Hook {
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var hooks []*Hook
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for _, h := range o {
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hooks = append(hooks, &Hook{
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Path: h.Path,
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Args: DupStringSlice(h.Args),
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Env: DupStringSlice(h.Env),
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Timeout: Int(h.Timeout),
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})
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}
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return hooks
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}
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