feat(log): use short image/container IDs in logs (#888)

pull/914/head
nils måsén 4 years ago committed by GitHub
parent 62a6d31880
commit 6a9d985ce7
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GPG Key ID: 4AEE18F83AFDEB23

@ -147,8 +147,10 @@ func (client dockerClient) StopContainer(c Container, timeout time.Duration) err
signal = defaultStopSignal
}
shortID := ShortID(c.ID())
if c.IsRunning() {
log.Infof("Stopping %s (%s) with %s", c.Name(), c.ID(), signal)
log.Infof("Stopping %s (%s) with %s", c.Name(), shortID, signal)
if err := client.api.ContainerKill(bg, c.ID(), signal); err != nil {
return err
}
@ -158,9 +160,9 @@ func (client dockerClient) StopContainer(c Container, timeout time.Duration) err
_ = client.waitForStopOrTimeout(c, timeout)
if c.containerInfo.HostConfig.AutoRemove {
log.Debugf("AutoRemove container %s, skipping ContainerRemove call.", c.ID())
log.Debugf("AutoRemove container %s, skipping ContainerRemove call.", shortID)
} else {
log.Debugf("Removing container %s", c.ID())
log.Debugf("Removing container %s", shortID)
if err := client.api.ContainerRemove(bg, c.ID(), types.ContainerRemoveOptions{Force: true, RemoveVolumes: client.removeVolumes}); err != nil {
return err
@ -169,7 +171,7 @@ func (client dockerClient) StopContainer(c Container, timeout time.Duration) err
// Wait for container to be removed. In this case an error is a good thing
if err := client.waitForStopOrTimeout(c, timeout); err == nil {
return fmt.Errorf("container %s (%s) could not be removed", c.Name(), c.ID())
return fmt.Errorf("container %s (%s) could not be removed", c.Name(), shortID)
}
return nil
@ -229,7 +231,7 @@ func (client dockerClient) StartContainer(c Container) (string, error) {
func (client dockerClient) doStartContainer(bg context.Context, c Container, creation container.ContainerCreateCreatedBody) error {
name := c.Name()
log.Debugf("Starting container %s (%s)", name, creation.ID)
log.Debugf("Starting container %s (%s)", name, ShortID(creation.ID))
err := client.api.ContainerStart(bg, creation.ID, types.ContainerStartOptions{})
if err != nil {
return err
@ -239,7 +241,7 @@ func (client dockerClient) doStartContainer(bg context.Context, c Container, cre
func (client dockerClient) RenameContainer(c Container, newName string) error {
bg := context.Background()
log.Debugf("Renaming container %s (%s) to %s", c.Name(), c.ID(), newName)
log.Debugf("Renaming container %s (%s) to %s", c.Name(), ShortID(c.ID()), newName)
return client.api.ContainerRename(bg, c.ID(), newName)
}
@ -269,7 +271,7 @@ func (client dockerClient) HasNewImage(ctx context.Context, container Container)
return false, nil
}
log.Infof("Found new %s image (%s)", imageName, newImageInfo.ID)
log.Infof("Found new %s image (%s)", imageName, ShortID(newImageInfo.ID))
return true, nil
}
@ -284,13 +286,13 @@ func (client dockerClient) PullImage(ctx context.Context, container Container) e
log.WithFields(fields).Debugf("Trying to load authentication credentials.")
opts, err := registry.GetPullOptions(imageName)
if opts.RegistryAuth != "" {
log.Debug("Credentials loaded")
}
if err != nil {
log.Debugf("Error loading authentication credentials %s", err)
return err
}
if opts.RegistryAuth != "" {
log.Debug("Credentials loaded")
}
log.WithFields(fields).Debugf("Checking if pull is needed")
@ -326,7 +328,7 @@ func (client dockerClient) PullImage(ctx context.Context, container Container) e
}
func (client dockerClient) RemoveImageByID(id string) error {
log.Infof("Removing image %s", id)
log.Infof("Removing image %s", ShortID(id))
_, err := client.api.ImageRemove(
context.Background(),
@ -404,6 +406,7 @@ func (client dockerClient) waitForExecOrTimeout(bg context.Context, ID string, e
for {
execInspect, err := client.api.ContainerExecInspect(ctx, ID)
//goland:noinspection GoNilness
log.WithFields(log.Fields{
"exit-code": execInspect.ExitCode,
"exec-id": execInspect.ExecID,

@ -0,0 +1,23 @@
package container
import "strings"
// ShortID returns the 12-character (hex) short version of an image ID hash, removing any "sha256:" prefix if present
func ShortID(imageID string) (short string) {
prefixSep := strings.IndexRune(imageID, ':')
offset := 0
length := 12
if prefixSep >= 0 {
if imageID[0:prefixSep] == "sha256" {
offset = prefixSep + 1
} else {
length += prefixSep + 1
}
}
if len(imageID) >= offset+length {
return imageID[offset : offset+length]
}
return imageID
}

@ -0,0 +1,46 @@
package container_test
import (
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
. "github.com/containrrr/watchtower/pkg/container"
)
var _ = Describe("container utils", func() {
Describe("ShortID", func() {
When("given a normal image ID", func() {
When("it contains a sha256 prefix", func() {
It("should return that ID in short version", func() {
actual := ShortID("sha256:0123456789abcd00000000001111111111222222222233333333334444444444")
Expect(actual).To(Equal("0123456789ab"))
})
})
When("it doesn't contain a prefix", func() {
It("should return that ID in short version", func() {
actual := ShortID("0123456789abcd00000000001111111111222222222233333333334444444444")
Expect(actual).To(Equal("0123456789ab"))
})
})
})
When("given a short image ID", func() {
When("it contains no prefix", func() {
It("should return the same string", func() {
Expect(ShortID("0123456789ab")).To(Equal("0123456789ab"))
})
})
When("it contains a the sha256 prefix", func() {
It("should return the ID without the prefix", func() {
Expect(ShortID("sha256:0123456789ab")).To(Equal("0123456789ab"))
})
})
})
When("given an ID with an unknown prefix", func() {
It("should return a short version of that ID including the prefix", func() {
Expect(ShortID("md5:0123456789ab")).To(Equal("md5:0123456789ab"))
Expect(ShortID("md5:0123456789abcdefg")).To(Equal("md5:0123456789ab"))
Expect(ShortID("md5:01")).To(Equal("md5:01"))
})
})
})
})
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