forked from juju/juju
/
vmextension.go
67 lines (59 loc) · 2.47 KB
/
vmextension.go
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// Copyright 2015 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package azure
import (
"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2018-10-01/compute"
"github.com/Azure/go-autorest/autorest/to"
"github.com/juju/errors"
jujuos "github.com/juju/os"
)
const extensionName = "JujuCustomScriptExtension"
const (
windowsExecuteCustomScriptCommand = `` +
`move C:\AzureData\CustomData.bin C:\AzureData\CustomData.ps1 && ` +
`powershell.exe -ExecutionPolicy Unrestricted -File C:\AzureData\CustomData.ps1 && ` +
`del /q C:\AzureData\CustomData.ps1`
windowsCustomScriptPublisher = "Microsoft.Compute"
windowsCustomScriptType = "CustomScriptExtension"
windowsCustomScriptVersion = "1.4"
)
const (
// The string will be split and executed by Python's
// subprocess.call, not interpreted as a shell command.
linuxExecuteCustomScriptCommand = `bash -c 'base64 -d /var/lib/waagent/CustomData | bash'`
linuxCustomScriptPublisher = "Microsoft.OSTCExtensions"
linuxCustomScriptType = "CustomScriptForLinux"
linuxCustomScriptVersion = "1.4"
)
// vmExtension creates a CustomScript VM extension for the given VM
// which will execute the CustomData on the machine as a script.
func vmExtensionProperties(os jujuos.OSType) (*compute.VirtualMachineExtensionProperties, error) {
var commandToExecute, extensionPublisher, extensionType, extensionVersion string
switch os {
case jujuos.Windows:
commandToExecute = windowsExecuteCustomScriptCommand
extensionPublisher = windowsCustomScriptPublisher
extensionType = windowsCustomScriptType
extensionVersion = windowsCustomScriptVersion
case jujuos.CentOS:
commandToExecute = linuxExecuteCustomScriptCommand
extensionPublisher = linuxCustomScriptPublisher
extensionType = linuxCustomScriptType
extensionVersion = linuxCustomScriptVersion
default:
// Ubuntu renders CustomData as cloud-config, and interprets
// it with cloud-init. Windows and CentOS do not use cloud-init
// on Azure.
return nil, errors.NotSupportedf("CustomScript extension for OS %q", os)
}
extensionSettings := map[string]interface{}{
"commandToExecute": commandToExecute,
}
return &compute.VirtualMachineExtensionProperties{
Publisher: to.StringPtr(extensionPublisher),
Type: to.StringPtr(extensionType),
TypeHandlerVersion: to.StringPtr(extensionVersion),
AutoUpgradeMinorVersion: to.BoolPtr(true),
Settings: &extensionSettings,
}, nil
}