Migrating to Cloud SDK

Python 2.7/3 |Java 8/11 |PHP 5/7 |Ruby |Go 1.11/1.12+ |Node.js

As of July 30, 2019, the standalone App Engine SDK is deprecated. It will become unavailable for download on August 30, 2020. The following table lists the deprecated features and recommended alternatives:

Deprecated	Recommended action
standalone App Engine SDK	Download Cloud SDK.
appcfg commands	Migrate from AppCfg to gcloud command line.
dev_appserver.sh commands	For local development, run the java_dev_appserver.sh command from the bin directory of Cloud SDK.
Java App Engine SDK-based plugin for Maven (com.google.appengine.appengine-maven)	Migrate to the Cloud SDK-based Maven plugin.
Java App Engine SDK-based plugin for Gradle (com.google.appengine.appengine-gradle)	Migrate to the Cloud SDK-based Gradle plugin.
cron.xml, datastore-index.xml, dispatch.xml, and queue.xml file formats	Migrate automatically using the gcloud beta app migrate-config tool or migrate your xml to yaml files manually.

Migration timetable

July 30, 2019: The standalone App Engine SDK-based tooling is deprecated.

August 30, 2020: The standalone App Engine SDK will not be available for download and might not work, if used.

August 30, 2020: Google shuts down and removes support for the standalone App Engine SDK.

Backward non-compatible features

As a result of the deprecation of the appcfg tool and the standalone App Engine SDK, the following features are currently not supported in Cloud SDK:

• Downloads of your application's files with AppCfg.

Migrating XML to YAML file formats

Cloud SDK does not support the following file formats:

• cron.xml
• datastore-index.xml
• dispatch.xml
• queue.xml

The following examples demonstrate how to migrate your xml files to yaml files.

Migrating your files automatically

Beta

This feature is covered by the Pre-GA Offerings Terms of the Google Cloud Platform Terms of Service. Pre-GA features may have limited support, and changes to pre-GA features may not be compatible with other pre-GA versions. For more information, see the launch stage descriptions.

To migrate your xml files automatically:

1. You must have Cloud SDK version 226.0.0 or later. To update to the latest version:

   gcloud components update
   

2. For each file you'd like to migrate, specify one of the following subcommands (cron-xml-to-yaml, datastore-indexes-xml-to-yaml, dispatch-xml-to-yaml, queue-xml-to-yaml) and file name:

   gcloud beta app migrate-config queue-xml-to-yaml MY-QUEUE-XML-FILE.xml
   

3. Manually double-check the converted file before deploying to production.

   For a successful sample xml to yaml file conversion, see the Migrating your files manually tabs.

Migrating your files manually

To manually migrate your xml files to yaml files:

cron.yaml

Create a cron.yaml file with a cron object containing a list of objects, each with fields that correspond to each of the <cron> tag attributes in your cron.xml file, as shown below.

Converted cron.yaml file:

cron:
- url: '/recache'
  schedule: 'every 2 minutes'
  description: 'Repopulate the cache every 2 minutes'
- url: '/weeklyreport'
  schedule: 'every monday 08:30'
  target: 'version-2'
  timezone: 'America/New_York'
  description: 'Mail out a weekly report'

Original cron.xml file:

<?xml version="1.0" encoding="UTF-8"?>
<cronentries>
  <cron>
    <url>/recache</url>
    <description>Repopulate the cache every 2 minutes</description>
    <schedule>every 2 minutes</schedule>
  </cron>
  <cron>
    <url>/weeklyreport</url>
    <description>Mail out a weekly report</description>
    <schedule>every monday 08:30</schedule>
    <timezone>America/New_York</timezone>
    <target>version-2</target>
  </cron>
</cronentries>

For more information, see the cron.yaml reference documentation.

dispatch.yaml

Create a dispatch.yaml file with a dispatch object containing a list of objects, each with fields that correspond to each of the <dispatch> tag attributes in your dispatch.xml file, as shown below.

Converted dispatch.yaml file:

dispatch:
- url: '*/favicon.ico'
  module: default
- url: 'simple-sample.uc.r.appspot.com/'
  module: default
- url: '*/mobile/*'
  module: mobile-frontend

Original dispatch.xml file

<?xml version="1.0" encoding="UTF-8"?>
<dispatch-entries>
  <dispatch>
      <url>*/favicon.ico</url>
      <module>default</module>
  </dispatch>
  <dispatch>
      <url>simple-sample.uc.r.appspot.com/</url>
      <module>default</module>
  </dispatch>
  <dispatch>
      <url>*/mobile/*</url>
      <module>mobile-frontend</module>
  </dispatch>
</dispatch-entries>

For more information, see the dispatch.yaml reference documentation

index.yaml

Create an index.yaml file with an indexes object containing a list of objects, each with fields that correspond to each of the <datastore-index> tag attributes in your datastore-indexes.xml file, as shown below.

Converted index.yaml file:

indexes:
- ancestor: false
  kind: Employee
  properties:
  - direction: asc
    name: lastName
  - direction: desc
    name: hireDate
- ancestor: false
  kind: Project
  properties:
  - direction: asc
    name: dueDate
  - direction: desc
    name: cost

Original datastore-index.xml file:

<?xml version="1.0" encoding="utf-8"?>
<datastore-indexes
 autoGenerate="true">
   <datastore-index kind="Employee" ancestor="false">
       <property name="lastName" direction="asc" />
       <property name="hireDate" direction="desc" />
   </datastore-index>
   <datastore-index kind="Project" ancestor="false">
       <property name="dueDate" direction="asc" />
       <property name="cost" direction="desc" />
   </datastore-index>
</datastore-indexes>

For more information, see the index.yaml reference documentation.

queue.yaml

Create a queue.yaml file with a queue object containing a list of objects, each with fields that correspond to each of the <queue> tag attributes in your queue.xml file, as shown below.

Converted queue.yaml file:

queue:
- name: fooqueue
  mode: push
  rate: 1/s
  retry_parameters:
    task_retry_limit: 7
    task_age_limit: 2d
- name: barqueue
  mode: push
  rate: 1/s
  retry_parameters:
    min_backoff_seconds: 10
    max_backoff_seconds: 200
    max_doublings: 0

Original queue.xml file:

<queue-entries>
  <queue>
    <name>fooqueue</name>
    <rate>1/s</rate>
    <retry-parameters>
      <task-retry-limit>7</task-retry-limit>
      <task-age-limit>2d</task-age-limit>
    </retry-parameters>
  </queue>
  <queue>
    <name>barqueue</name>
    <rate>1/s</rate>
    <retry-parameters>
      <min-backoff-seconds>10</min-backoff-seconds>
      <max-backoff-seconds>200</max-backoff-seconds>
      <max-doublings>0</max-doublings>
    </retry-parameters>
  </queue>
<queue-entries>

Caution: Queue creation for the task queue service can also be managed using Queue Management methods available through the Cloud Tasks API, but mixing the queue.yaml method with the Queue Management methods can produce unexpected results and is not recommended. For more information, see Using Queue Management versus queue.yaml.