94db64fcb3
Pulled SysSpecs out of types.go and created two os specific implementations with build tags Similarly created conditionally compiled implementations of KernelValidationHelper to get Kernel version in os specific manner, as well as os specific docker endpoints (socket vs named pipes)
101 lines
3.0 KiB
Go
101 lines
3.0 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/docker/api/types"
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"github.com/docker/docker/client"
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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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dockerConfigPrefix = "DOCKER_"
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maxDockerValidatedVersion = "17.03"
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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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// If it's of the new Docker version scheme but didn't match above, it
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// must be a newer version than the most recently validated one.
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ver := `\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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