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https://github.com/optim-enterprises-bv/kubernetes.git
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35f07095d8
This change allows validators to pass warnings as well as errors. This was needed because of how support for docker 1.13+ and the new EE and CE versions is currently being handled.
100 lines
2.9 KiB
Go
100 lines
2.9 KiB
Go
/*
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Copyright 2016 The Kubernetes 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 system
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import (
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"fmt"
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"regexp"
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"github.com/docker/engine-api/client"
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"github.com/docker/engine-api/types"
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"golang.org/x/net/context"
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)
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var _ Validator = &DockerValidator{}
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// DockerValidator validates docker configuration.
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type DockerValidator struct {
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Reporter Reporter
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}
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func (d *DockerValidator) Name() string {
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return "docker"
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}
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const (
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dockerEndpoint = "unix:///var/run/docker.sock"
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dockerConfigPrefix = "DOCKER_"
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maxDockerValidatedVersion = "1.12"
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)
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// TODO(random-liu): Add more validating items.
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func (d *DockerValidator) Validate(spec SysSpec) (error, error) {
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if spec.RuntimeSpec.DockerSpec == nil {
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// If DockerSpec is not specified, assume current runtime is not
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// docker, skip the docker configuration validation.
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return nil, nil
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}
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c, err := client.NewClient(dockerEndpoint, "", nil, nil)
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if err != nil {
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return nil, fmt.Errorf("failed to create docker client: %v", err)
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}
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info, err := c.Info(context.Background())
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if err != nil {
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return nil, fmt.Errorf("failed to get docker info: %v", err)
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}
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return d.validateDockerInfo(spec.RuntimeSpec.DockerSpec, info)
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}
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func (d *DockerValidator) validateDockerInfo(spec *DockerSpec, info types.Info) (error, error) {
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// Validate docker version.
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matched := false
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for _, v := range spec.Version {
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r := regexp.MustCompile(v)
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if r.MatchString(info.ServerVersion) {
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d.Reporter.Report(dockerConfigPrefix+"VERSION", info.ServerVersion, good)
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matched = true
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}
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}
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if !matched {
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// catch if docker is 1.13+
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ver := `1\.(1[3-9])\..*|\d{2}\.\d+\.\d+-[a-z]{2}`
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r := regexp.MustCompile(ver)
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if r.MatchString(info.ServerVersion) {
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d.Reporter.Report(dockerConfigPrefix+"VERSION", info.ServerVersion, good)
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w := fmt.Errorf(
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"docker version is greater than the most recently validated version. Docker version: %s. Max validated version: %s",
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info.ServerVersion,
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maxDockerValidatedVersion,
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)
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return w, nil
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}
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d.Reporter.Report(dockerConfigPrefix+"VERSION", info.ServerVersion, bad)
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return nil, fmt.Errorf("unsupported docker version: %s", info.ServerVersion)
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}
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// Validate graph driver.
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item := dockerConfigPrefix + "GRAPH_DRIVER"
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for _, gd := range spec.GraphDriver {
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if info.Driver == gd {
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d.Reporter.Report(item, info.Driver, good)
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return nil, nil
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}
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}
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d.Reporter.Report(item, info.Driver, bad)
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return nil, fmt.Errorf("unsupported graph driver: %s", info.Driver)
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}
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