packer-cn/builder/googlecompute/builder.go

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// The googlecompute package contains a packer.Builder implementation that
// builds images for Google Compute Engine.
package googlecompute
import (
"fmt"
"log"
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"github.com/hashicorp/packer/common"
"github.com/hashicorp/packer/helper/communicator"
"github.com/hashicorp/packer/helper/multistep"
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"github.com/hashicorp/packer/packer"
)
// The unique ID for this builder.
const BuilderId = "packer.googlecompute"
// Builder represents a Packer Builder.
type Builder struct {
config *Config
runner multistep.Runner
}
// Prepare processes the build configuration parameters.
func (b *Builder) Prepare(raws ...interface{}) ([]string, error) {
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c, warnings, errs := NewConfig(raws...)
if errs != nil {
return warnings, errs
}
b.config = c
return warnings, nil
}
// Run executes a googlecompute Packer build and returns a packer.Artifact
// representing a GCE machine image.
func (b *Builder) Run(ui packer.Ui, hook packer.Hook) (packer.Artifact, error) {
driver, err := NewDriverGCE(
ui, b.config.ProjectId, &b.config.Account)
if err != nil {
return nil, err
}
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// Set up the state.
state := new(multistep.BasicStateBag)
state.Put("config", b.config)
state.Put("driver", driver)
state.Put("hook", hook)
state.Put("ui", ui)
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// Build the steps.
steps := []multistep.Step{
new(StepCheckExistingImage),
&StepCreateSSHKey{
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Debug: b.config.PackerDebug,
DebugKeyPath: fmt.Sprintf("gce_%s.pem", b.config.PackerBuildName),
},
&StepCreateInstance{
Debug: b.config.PackerDebug,
},
&StepCreateWindowsPassword{
Debug: b.config.PackerDebug,
DebugKeyPath: fmt.Sprintf("gce_windows_%s.pem", b.config.PackerBuildName),
},
&StepInstanceInfo{
Debug: b.config.PackerDebug,
},
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&communicator.StepConnect{
Config: &b.config.Comm,
Host: commHost,
SSHConfig: b.config.Comm.SSHConfigFunc(),
WinRMConfig: winrmConfig,
},
new(common.StepProvision),
&common.StepCleanupTempKeys{
Comm: &b.config.Comm,
},
}
if _, exists := b.config.Metadata[StartupScriptKey]; exists || b.config.StartupScriptFile != "" {
steps = append(steps, new(StepWaitStartupScript))
}
steps = append(steps, new(StepTeardownInstance), new(StepCreateImage))
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// Run the steps.
b.runner = common.NewRunner(steps, b.config.PackerConfig, ui)
b.runner.Run(state)
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// Report any errors.
if rawErr, ok := state.GetOk("error"); ok {
return nil, rawErr.(error)
}
if _, ok := state.GetOk("image"); !ok {
log.Println("Failed to find image in state. Bug?")
return nil, nil
}
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artifact := &Artifact{
Some googlecompute fixes and cleanup. Addresses https://github.com/mitchellh/packer/issues/3829. Changes: - startup scripts don't run for Windows since it is isn't implemented yet. - startup scripts use instance metadata instead of serial port output to flag when they are done. - added licenses to Image data type (to check if an Image is a Windows Image). - added GetImage and GetImageFromProject to googlecompute Drivers. - changed some of the builder/googlecompute tests to use github.com/stretchr/testify/assert. Tests: - (in the Packer directory) `go test .`, `go test ./builder/googlecompute`, and `go test ./post-processor/googlecompute-export` - manual run of `packer build packer_template.json` with the following files --packer_template.json-- { "builders": [ { "type": "googlecompute", "account_file": "creds.json", "project_id": "google.com:packer-test", "source_image": "debian-8-jessie-v20160629", "zone": "us-central1-a", "startup_script_file": "startup_script.sh", "metadata": { "startup-script": "#!/bin/sh\necho \"This should be overwritten.\"", "startup-script-log-dest": "gs://packer-test.google.com.a.appspot.com/startup-script.log" }, "image_name": "test-packer-modifications", "ssh_username": "foo" } ], "post-processors": [ { "type": "googlecompute-export", "paths": [ "gs://packer-test.google.com.a.appspot.com/foo.tar.gz", "gs://packer-test.google.com.a.appspot.com/bar.tar.gz" ], "keep_input_artifact": true } ] } --startup_script.sh-- \#!/bin/sh echo "Hi, my name is Scott. I'm waiting 60 seconds!" >> /scott sleep 60 echo "I'm done waiting!" >> /scott
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image: state.Get("image").(*Image),
driver: driver,
config: b.config,
}
return artifact, nil
}
// Cancel.
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func (b *Builder) Cancel() {
if b.runner != nil {
log.Println("Cancelling the step runner...")
b.runner.Cancel()
}
}