feat: Add new gcloud commands, API clients, and third-party libraries across various services.

gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/.gitignore

@@ -0,0 +1 @@
+*.pyc

gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/CONTRIBUTING.md

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+Want to contribute? Great! First, read this page (including the small print at the end).
+
+### Before you contribute
+Before we can use your code, you must sign the
+[Google Individual Contributor License Agreement](https://developers.google.com/open-source/cla/individual?csw=1)
+(CLA), which you can do online. The CLA is necessary mainly because you own the
+copyright to your changes, even after your contribution becomes part of our
+codebase, so we need your permission to use and distribute your code. We also
+need to be sure of various other things—for instance that you'll tell us if you
+know that your code infringes on other people's patents. You don't have to sign
+the CLA until after you've submitted your code for review and a member has
+approved it, but you must do it before we can put your code into our codebase.
+Before you start working on a larger contribution, you should get in touch with
+us first through the issue tracker with your idea so that we can help out and
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+
+### Code reviews
+All submissions, including submissions by project members, require review. We
+use Github pull requests for this purpose.
+
+### The small print
+Contributions made by corporations are covered by a different agreement than
+the one above, the Software Grant and Corporate Contributor License Agreement.

gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/LICENSE

@@ -0,0 +1,202 @@
+
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gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/README.md

@@ -0,0 +1,6 @@
+
+Node.js Externalized Runtime
+============================
+
+This is the node.js runtime definition that will soon be used by gcloud for
+generating dockerfiles for GAE.

gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/bin/detect

@@ -0,0 +1,145 @@
+#!/usr/bin/python
+# Copyright 2015 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Language detection script.
+
+import json
+import os
+import re
+import sys
+import subprocess
+
+DEV_NULL = open(os.devnull, 'w')
+
+# Augment the path with our library directory.
+ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(sys.argv[0])))
+sys.path.append(os.path.join(ROOT_DIR, 'lib'))
+
+import comm
+
+def asList(val):
+    """Returns the value if it is a list else returns a list with the value.
+    """
+    return val if isinstance(val, list) else [val]
+
+def main(args):
+
+    if len(args) != 2:
+        # If we're being called incorrectly, this probably isn't happening from a
+        # framework.
+        sys.stderr.write('Invalid Usage: %s <source-root-directory>' %
+                         sys.argv[0])
+        return 1
+
+    # Get the first argument, should be the source root directory.
+    path = args[1]
+
+    # Show failures in debug or error depending on whether nodejs has been
+    # explicitly specified.
+    config = comm.get_config()
+    if ((config.params.appinfo and config.params.appinfo.runtime) or
+        config.params.runtime):
+        log_detect_error = comm.error
+    else:
+        log_detect_error = comm.debug
+
+    comm.info('Checking for Node.js.')
+    package_json = os.path.join(path, 'package.json')
+    yarn_lock_name = 'yarn.lock'
+    yarn_lock = os.path.join(path, yarn_lock_name)
+    got_shrinkwrap = False
+
+    if not os.path.isfile(package_json):
+        comm.debug('node.js checker: No package.json file.')
+        got_package_json = False
+        got_scripts_start = False
+        node_version = None
+        use_yarn = False
+    else:
+        got_package_json = True
+        # If there's a package.json file, that's unusual enough that any
+        # errors should be surfaced to the user.
+        log_detect_error = comm.error
+
+        # Consider the yarn.lock file as present if and only if the yarn.lock
+        # file exists and is not specified as being skipped in app.yaml.
+        try:
+            raw_skip_files = config.params.appinfo.skip_files
+            skip_files = [] if raw_skip_files is None else asList(raw_skip_files)
+        except AttributeError:
+            # If the skip_file attribute or any other parent attribute
+            # does not exist, treat the skip_files as not user specified.
+            skip_files = []
+
+        yarn_lock_exists = os.path.isfile(yarn_lock)
+        yarn_lock_skipped = False
+        for pattern in skip_files:
+            if re.match(pattern, yarn_lock_name) is not None:
+                yarn_lock_skipped = True
+                break;
+
+        use_yarn = yarn_lock_exists and not yarn_lock_skipped
+
+        # Try to read the package.json file.
+        try:
+            with open(package_json) as f:
+                contents = json.load(f)
+        except (IOError, ValueError) as ex:
+            # If we have an invalid or unreadable package.json file, there's
+            # something funny going on here so fail recognition.
+            # A package.json that exists is unusual enough that we want to warn
+            # regardless of whether the nodejs runtime was specified.
+            log_detect_error('node.js checker: error accessing package.json: '
+                             '%r' % ex)
+            return 1
+
+        # See if we've got a scripts.start field.
+        got_scripts_start = bool(contents.get('scripts', {}).get('start'))
+
+        # See if a version of node is specified.
+        try:
+            node_version = contents.get('engines', {}).get('node', None)
+            comm.info('node version is %s', node_version)
+        except AttributeError:
+            # Most likely "engines" wasn't a dictionary.
+            comm.warn('node.js checker: ignoring invalid "engines" field in '
+                      'package.json')
+            node_version = None
+
+        if node_version is None:
+            comm.warn('No node version specified.  Please add your node '
+                      'version, see '
+                      'https://docs.npmjs.com/files/package.json#engines')
+
+    if got_scripts_start or os.path.exists(os.path.join(path, 'server.js')):
+      runtime = 'custom' if config.params.custom else 'nodejs'
+      appinfo = {'runtime': runtime,
+                 'env': 'flex'}
+      comm.send_runtime_params({'got_package_json': got_package_json,
+                                'got_scripts_start': got_scripts_start,
+                                'node_version': node_version,
+                                'use_yarn': use_yarn},
+                                appinfo=appinfo)
+
+    else:
+        log_detect_error('node.js checker: Neither "start" in the "scripts" '
+                         'section of "package.json" nor the "server.js" file '
+                         'were found.')
+        return 1
+
+    return 0
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))

gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/bin/generate_configs

@@ -0,0 +1,90 @@
+#!/usr/bin/python
+# Copyright 2015 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+import StringIO
+import pipes
+import sys
+
+# Augment the path with our library directory.
+ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(sys.argv[0])))
+sys.path.append(os.path.join(ROOT_DIR, 'lib'))
+
+import comm
+
+ROOT = comm.RuntimeDefinitionRoot(ROOT_DIR)
+
+# The template for the docker command that is injected into the Dockerfile
+# when the user specifies a node version in their "engines" section.
+INSTALL_NODE_TEMPLATE = ROOT.read_file('data/install-node-version')
+
+def main(args):
+    """Generate all config files for the module."""
+
+    # Get runtime parameters from the controller.
+    info = comm.get_config()
+    runtime_data = info.runtime_data
+    params = info.params
+
+    # Generate app.yaml.
+    if not params.appinfo:
+        app_yaml = 'app.yaml'
+        runtime = 'custom' if params.custom else 'nodejs'
+        app_yaml_contents = ROOT.read_file('data/app.yaml')
+        comm.gen_file(app_yaml,
+                      app_yaml_contents.format(runtime=runtime))
+
+    if params.custom or params.deploy:
+        dockerfile = 'Dockerfile'
+
+        # Customize the dockerfile.
+        out = StringIO.StringIO()
+        out.write(ROOT.read_file('data', 'Dockerfile'))
+        if runtime_data.node_version:
+            # Let node check to see if it satisfies the version constraint and
+            # try to install the correct version if not.
+            out.write(INSTALL_NODE_TEMPLATE %
+                      {'version_spec': pipes.quote(runtime_data.node_version)})
+
+        # If the directory structure indicates that yarn is being used
+        # then install yarn since (unlike npm) Node.js doesn't include it
+        if runtime_data.use_yarn:
+            out.write(ROOT.read_file('data', 'install-yarn'))
+
+        out.write('COPY . /app/\n')
+
+        # Generate npm or yarn install if there is a package.json.
+        if runtime_data.got_package_json:
+            out.write(
+                ROOT.read_file('data/{0}-package-json-install'.
+                               format('yarn' if runtime_data.use_yarn
+                                      else 'npm')))
+
+        # Generate the appropriate start command.
+        if runtime_data.got_scripts_start:
+            out.write(
+                'CMD {0} start\n'.format('yarn' if runtime_data.use_yarn
+                                         else 'npm'))
+        else:
+            out.write('CMD node server.js\n')
+
+        comm.gen_file('Dockerfile', out.getvalue())
+
+        # Generate .dockerignore
+        dockerignore = '.dockerignore'
+        comm.gen_file(dockerignore, ROOT.read_file('data/dockerignore'))
+
+if __name__ == '__main__':
+    main(sys.argv)

gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/data/Dockerfile

@@ -0,0 +1,3 @@
+# Dockerfile extending the generic Node image with application files for a
+# single application.
+FROM gcr.io/google_appengine/nodejs

gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/data/app.yaml

@@ -0,0 +1,2 @@
+env: flex
+runtime: {runtime}

gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/data/dockerignore

@@ -0,0 +1,22 @@
+# Copyright 2015 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+node_modules
+.dockerignore
+Dockerfile
+npm-debug.log
+yarn-error.log
+.git
+.hg
+.svn

gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/data/install-node-version

@@ -0,0 +1,4 @@
+# Check to see if the the version included in the base runtime satisfies
+# %(version_spec)s, if not then do an npm install of the latest available
+# version that satisfies it.
+RUN /usr/local/bin/install_node %(version_spec)s

gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/data/install-yarn

@@ -0,0 +1,6 @@
+# You have to specify "--unsafe-perm" with npm install
+# when running as root.  Failing to do this can cause
+# install to appear to succeed even if a preinstall
+# script fails, and may have other adverse consequences
+# as well.
+RUN npm install --unsafe-perm --global yarn

gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/data/npm-package-json-install

@@ -0,0 +1,11 @@
+# You have to specify "--unsafe-perm" with npm install
+# when running as root.  Failing to do this can cause
+# install to appear to succeed even if a preinstall
+# script fails, and may have other adverse consequences
+# as well.
+# This command will also cat the npm-debug.log file after the
+# build, if it exists.
+RUN npm install --unsafe-perm || \
+  ((if [ -f npm-debug.log ]; then \
+      cat npm-debug.log; \
+    fi) && false)

gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/data/yarn-package-json-install

@@ -0,0 +1,5 @@
+
+RUN yarn install --production || \
+  ((if [ -f yarn-error.log ]; then \
+      cat yarn-error.log; \
+    fi) && false)

gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/lib/comm.py

@@ -0,0 +1,121 @@
+# Copyright 2015 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import json
+import os
+import sys
+
+def _write_msg(**message):
+    """Write a message to standard output.
+
+    Args:
+        **message: ({str: object, ...}) A JSON message encoded in keyword
+            arguments.
+    """
+    json.dump(message, sys.stdout)
+    sys.stdout.write('\n')
+    sys.stdout.flush()
+
+
+def error(message, *args):
+    _write_msg(type='error', message=message % args)
+
+
+def warn(message, *args):
+    _write_msg(type='warn', message=message % args)
+
+
+def info(message, *args):
+    _write_msg(type='info', message=message % args)
+
+
+def debug(message, *args):
+    _write_msg(type='debug', message=message % args)
+
+
+def print_status(message, *args):
+    _write_msg(type='print_status', message=message % args)
+
+
+def send_runtime_params(params, appinfo=None):
+    """Send runtime parameters back to the controller.
+
+    Args:
+        params: ({str: object, ...}) Set of runtime parameters.  Must be
+            json-encodable.
+        appinfo: ({str: object, ...}) Contents of the app.yaml file to
+            be produced by the runtime definition.  Required fields may be
+            added to this by the framework, the only thing an application
+            needs to provide is the "runtime" field and any additional data
+            fields.
+    """
+    if appinfo is not None:
+        _write_msg(type='runtime_parameters', runtime_data=params,
+                   appinfo=appinfo)
+    else:
+        _write_msg(type='runtime_parameters', runtime_data=params)
+
+
+def get_config():
+    """Request runtime parameters from the controller.
+
+    Returns:
+      (object) The runtime parameters represented as an object.
+    """
+    _write_msg(type='get_config')
+    return dict_to_object(json.loads(sys.stdin.readline()))
+
+
+def dict_to_object(json_dict):
+    """Converts a dictionary to a python object.
+
+    Converts key-values to attribute-values.
+
+    Args:
+      json_dict: ({str: object, ...})
+
+    Returns:
+      (object)
+    """
+    class Object(object):
+        pass
+    obj = Object()
+    for name, val in json_dict.iteritems():
+        if isinstance(val, dict):
+          val = dict_to_object(val)
+        setattr(obj, name, val)
+    return obj
+
+
+class RuntimeDefinitionRoot(object):
+    """Abstraction that allows us to access files in the runtime definiton."""
+
+    def __init__(self, path):
+        self.root = path
+
+    def read_file(self, *name):
+        with open(os.path.join(self.root, *name)) as src:
+            return src.read()
+
+
+def gen_file(name, contents):
+    """Generate the file.
+
+    This writes the file to be generated back to the controller.
+
+    Args:
+        name: (str) The UNIX-style relative path of the file.
+        contents: (str) The complete file contents.
+    """
+    _write_msg(type='gen_file', filename=name, contents=contents)

gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/runtime.yaml

@@ -0,0 +1,8 @@
+author: mmuller@google.com
+name: nodejs
+description: Official Google Node.js runtime definition.
+api_version: 0.1
+detect:
+  python: bin/detect
+generate_configs:
+  python: bin/generate_configs

gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/test/runtime_test.py

@@ -0,0 +1,480 @@
+#!/usr/bin/python
+
+import mock
+import os
+import re
+import sys
+import stat
+import shutil
+import tempfile
+import textwrap
+import unittest
+
+from gae_ext_runtime import ext_runtime
+from gae_ext_runtime import testutil
+
+RUNTIME_DEF_ROOT = os.path.dirname(os.path.dirname(__file__))
+
+
+class RuntimeTests(testutil.TestBase):
+
+    def setUp(self):
+        self.runtime_def_root = RUNTIME_DEF_ROOT
+        super(RuntimeTests, self).setUp()
+
+    def read_dist_file(self, *args):
+        """Read the entire contents of the file.
+
+        Returns the entire contents of the file identified by a set of
+        arguments forming a path relative to the root of the runtime
+        definition.
+
+        TODO: Move this down into the SDK.
+
+        Args:
+            *args: A set of path components (see full_path()).  Note that
+                these are relative to the runtime definition root, not the
+                temporary directory.
+        """
+        with open(os.path.join(self.runtime_def_root, *args)) as fp:
+            return fp.read()
+
+    def test_node_js_server_js_only(self):
+        self.write_file('server.js', 'fake contents')
+        self.generate_configs()
+        self.assert_file_exists_with_contents(
+            'app.yaml',
+            self.read_dist_file('data', 'app.yaml').format(runtime='nodejs'))
+
+        self.generate_configs(deploy=True)
+        self.assert_file_exists_with_contents(
+            'Dockerfile',
+            self.read_dist_file('data', 'Dockerfile') + textwrap.dedent("""\
+                COPY . /app/
+                CMD node server.js
+                """))
+        self.assert_file_exists_with_contents(
+            '.dockerignore',
+            self.read_dist_file('data', 'dockerignore'))
+        self.assertEqual(set(os.listdir(self.temp_path)),
+                         {'Dockerfile', '.dockerignore', 'app.yaml',
+                          'server.js'})
+
+    def test_node_js_server_js_only_no_write(self):
+        """Test generate_config_data with only .js files.
+
+        After running generate_configs(), app.yaml exists; after
+        generate_config_data(), only app.yaml should exist on disk --
+        Dockerfile and .dockerignore should be returned by the method."""
+        self.write_file('server.js', 'fake contents')
+        self.generate_configs()
+        self.assert_file_exists_with_contents(
+            'app.yaml',
+            self.read_dist_file('data', 'app.yaml').format(runtime='nodejs'))
+
+        cfg_files = self.generate_config_data(deploy=True)
+        self.assert_genfile_exists_with_contents(
+            cfg_files,
+            'Dockerfile',
+            self.read_dist_file('data', 'Dockerfile') + textwrap.dedent("""\
+                COPY . /app/
+                CMD node server.js
+                """))
+        self.assert_genfile_exists_with_contents(
+            cfg_files,
+            '.dockerignore',
+            self.read_dist_file('data', 'dockerignore'))
+        self.assertEqual(set(os.listdir(self.temp_path)),
+                         {'app.yaml', 'server.js'})
+        self.assertEqual({f.filename for f in cfg_files},
+                         {'Dockerfile', '.dockerignore'})
+
+    def _validate_docker_files_for_npm(self):
+        base_dockerfile = self.read_dist_file('data', 'Dockerfile')
+        self.assert_file_exists_with_contents(
+            'Dockerfile',
+            base_dockerfile + 'COPY . /app/\n' +
+            self.read_dist_file('data', 'npm-package-json-install') +
+            'CMD npm start\n')
+        self.assert_file_exists_with_contents(
+            '.dockerignore',
+            self.read_dist_file('data', 'dockerignore'))
+
+    def test_node_js_package_json_npm(self):
+        self.write_file('foo.js', 'bogus contents')
+        self.write_file('package.json', '{"scripts": {"start": "foo.js"}}')
+        self.generate_configs()
+        self.assert_file_exists_with_contents(
+            'app.yaml',
+            self.read_dist_file('data', 'app.yaml').format(runtime='nodejs'))
+        self.generate_configs(deploy=True)
+        self._validate_docker_files_for_npm()
+        self.assertEqual(set(os.listdir(self.temp_path)),
+                         {'Dockerfile', '.dockerignore', 'app.yaml',
+                          'foo.js', 'package.json'})
+
+    def _validate_docker_files_for_yarn(self):
+        base_dockerfile = self.read_dist_file('data', 'Dockerfile')
+        install_yarn = self.read_dist_file('data', 'install-yarn')
+        self.assert_file_exists_with_contents(
+            'Dockerfile',
+            base_dockerfile + install_yarn + 'COPY . /app/\n' +
+            self.read_dist_file('data', 'yarn-package-json-install') +
+            'CMD yarn start\n')
+        self.assert_file_exists_with_contents(
+            '.dockerignore',
+            self.read_dist_file('data', 'dockerignore'))
+
+    def test_node_js_package_json_yarn(self):
+        self.write_file('foo.js', 'bogus contents')
+        self.write_file('package.json', '{"scripts": {"start": "foo.js"}}')
+        self.write_file('yarn.lock', 'yarn overridden')
+        self.generate_configs()
+        self.assert_file_exists_with_contents(
+            'app.yaml',
+            self.read_dist_file('data', 'app.yaml').format(runtime='nodejs'))
+        self.generate_configs(deploy=True)
+        self._validate_docker_files_for_yarn()
+        self.assertEqual(set(os.listdir(self.temp_path)),
+                         {'Dockerfile', '.dockerignore', 'app.yaml',
+                          'foo.js', 'package.json', 'yarn.lock'})
+
+    def _validate_file_list_for_skip_yarn_lock(self):
+        self.assertEqual(set(os.listdir(self.temp_path)),
+                         {'Dockerfile', '.dockerignore', 'yarn.lock',
+                          'foo.js', 'package.json'})
+
+    def test_skip_yarn_lock_with_other_files(self):
+        """Ensure use_yarn is False with yarn.lock present but is being skipped.
+
+        Further, this test verifies that use_yarn is False even if multiple
+        other entries are present in skip_files.
+
+        A yarn executable is injected that passes all checks to ensure that if
+        yarn.lock is set to be skipped, use_yarn is set to False even if yarn
+        can be executed and reports that the yarn.lock file is valid.
+        """
+        self.write_file('package.json', '{"scripts": {"start": "foo.js"}}')
+        self.write_file('foo.js', 'fake contents')
+        self.write_file('yarn.lock', 'fake contents')
+        config = testutil.AppInfoFake(runtime='nodejs',
+                                      skip_files=['^abc$',
+                                                  '^xyz$',
+                                                  '^yarn\.lock$',
+                                                  '^node_modules$'])
+        configurator = self.detect(appinfo=config)
+        self.assertEqual(configurator.data['use_yarn'], False)
+        self.generate_configs(appinfo=config, deploy=True)
+        self._validate_docker_files_for_npm()
+        self._validate_file_list_for_skip_yarn_lock()
+
+    def test_only_skip_yarn_lock(self):
+        """Ensure use_yarn is False with yarn.lock present but is being skipped.
+
+        Further, this test ensures use_yarn is false if the value obtained
+        from skip_files is a regex string and not a list of strings.
+
+        A yarn executable is injected that passes all checks to ensure that if
+        yarn.lock is set to be skipped, use_yarn is set to False even if yarn
+        can be executed and reports that the yarn.lock file is valid.
+        """
+        self.write_file('package.json', '{"scripts": {"start": "foo.js"}}')
+        self.write_file('foo.js', 'fake contents')
+        self.write_file('yarn.lock', 'fake contents')
+        config = testutil.AppInfoFake(runtime='nodejs',
+                                      skip_files='^yarn\.lock$')
+        configurator = self.detect(appinfo=config)
+        self.assertEqual(configurator.data['use_yarn'], False)
+        self.generate_configs(appinfo=config, deploy=True)
+        self._validate_docker_files_for_npm()
+        self._validate_file_list_for_skip_yarn_lock()
+
+    def test_do_not_skip_yarn_lock(self):
+        """Ensure use_yarn is True with yarn.lock present and not skipped.
+        """
+        self.write_file('package.json', '{"scripts": {"start": "foo.js"}}')
+        self.write_file('foo.js', 'fake contents')
+        self.write_file('yarn.lock', 'fake contents')
+        # Here only 'node_modules' will be skipped
+        config = testutil.AppInfoFake(runtime='nodejs',
+                                      skip_files='^node_modules$')
+        configurator = self.detect(appinfo=config)
+        self.assertEqual(configurator.data['use_yarn'], True)
+        self.generate_configs(appinfo=config, deploy=True)
+        self._validate_docker_files_for_yarn()
+        self._validate_file_list_for_skip_yarn_lock()
+
+    def test_use_yarn_skip_files_not_present(self):
+        """Ensure use_yarn is True with yarn.lock present and not skipped.
+
+        In particular, this test ensures use_yarn is True even if app.yaml
+        doesn't contain a skip_files section.
+        """
+        self.write_file('package.json', '{"scripts": {"start": "foo.js"}}')
+        self.write_file('foo.js', 'fake contents')
+        self.write_file('yarn.lock', 'fake contents')
+        config = testutil.AppInfoFake(runtime='nodejs')
+        configurator = self.detect(appinfo=config)
+        self.assertEqual(configurator.data['use_yarn'], True)
+        self.generate_configs(appinfo=config, deploy=True)
+        self._validate_docker_files_for_yarn()
+        self._validate_file_list_for_skip_yarn_lock()
+
+    def test_node_js_package_json_no_write(self):
+        """Test generate_config_data with a nodejs file and package.json."""
+        self.write_file('foo.js', 'bogus contents')
+        self.write_file('package.json', '{"scripts": {"start": "foo.js"}}')
+        self.generate_configs()
+        self.assert_file_exists_with_contents(
+            'app.yaml',
+            self.read_dist_file('data', 'app.yaml').format(runtime='nodejs'))
+
+        cfg_files = self.generate_config_data(deploy=True)
+
+        base_dockerfile = self.read_dist_file('data', 'Dockerfile')
+        self.assert_genfile_exists_with_contents(
+            cfg_files,
+            'Dockerfile',
+            base_dockerfile + 'COPY . /app/\n' +
+            self.read_dist_file('data', 'npm-package-json-install') +
+            'CMD npm start\n')
+        self.assert_genfile_exists_with_contents(
+            cfg_files,
+            '.dockerignore',
+            self.read_dist_file('data', 'dockerignore'))
+        self.assertEqual(set(os.listdir(self.temp_path)),
+                         {'app.yaml', 'foo.js', 'package.json'})
+        self.assertEqual({f.filename for f in cfg_files},
+                         {'Dockerfile', '.dockerignore'})
+
+    def test_detect_basic(self):
+        """Ensure that appinfo will be generated in detect method."""
+        self.write_file('foo.js', 'bogus contents')
+        self.write_file('package.json', '{"scripts": {"start": "foo.js"}}')
+        configurator = self.detect()
+        self.assertEqual(configurator.generated_appinfo,
+                         {u'runtime': 'nodejs',
+                          u'env': 'flex'})
+
+    def test_detect_custom(self):
+        """Ensure that appinfo is correct with custom=True."""
+        self.write_file('foo.js', 'bogus contents')
+        self.write_file('package.json', '{"scripts": {"start": "foo.js"}}')
+        configurator = self.detect(custom=True)
+        self.assertEqual(configurator.generated_appinfo,
+                         {'runtime': 'custom',
+                          'env': 'flex'})
+
+    def test_detect_no_start_no_server(self):
+        """Ensure that detect fails if no scripts.start field, no server.js."""
+        self.write_file('foo.js', 'bogus contents')
+        self.write_file('package.json', '{"scripts": {"not-start": "foo.js"}}')
+        configurator = self.detect()
+        self.assertEqual(configurator, None)
+
+    def test_detect_no_start_with_server(self):
+        """Ensure appinfo generated if no scripts.start, server.js exists."""
+        self.write_file('server.js', 'bogus contents')
+        self.write_file('package.json', '{"scripts": {"not-start": "foo.js"}}')
+        configurator = self.detect()
+        self.assertEqual(configurator.generated_appinfo,
+                         {'runtime': 'nodejs',
+                          'env': 'flex'})
+
+    def test_node_js_with_engines(self):
+        self.write_file('foo.js', 'bogus contents')
+        self.write_file('package.json',
+                        '{"scripts": {"start": "foo.js"},'
+                        '"engines": {"node": "0.12.3"}}')
+        self.generate_configs(deploy=True)
+        dockerfile_path = self.full_path('Dockerfile')
+        self.assertTrue(os.path.exists(dockerfile_path))
+
+        # This just verifies that the crazy node install line is generated, it
+        # says nothing about whether or not it works.
+        rx = re.compile(r'RUN npm install')
+        for line in open(dockerfile_path):
+            if rx.match(line):
+                break
+        else:
+            self.fail('node install line not generated')
+
+    def test_node_js_with_engines_no_write(self):
+        """Test generate_config_data with 'engines' in package.json."""
+        self.write_file('foo.js', 'bogus contents')
+        self.write_file('package.json',
+                        '{"scripts": {"start": "foo.js"},'
+                        '"engines": {"node": "0.12.3"}}')
+        cfg_files = self.generate_config_data(deploy=True)
+        self.assertIn('Dockerfile', [f.filename for f in cfg_files])
+
+        # This just verifies that the crazy node install line is generated, it
+        # says nothing about whether or not it works.
+        rx = re.compile(r'RUN npm install')
+        line_generated = False
+        for cfg_file in cfg_files:
+            if cfg_file.filename == 'Dockerfile':
+                for line in cfg_file.contents.split('\n'):
+                    if rx.match(line):
+                        line_generated = True
+        if not line_generated:
+            self.fail('node install line not generated')
+
+    def test_node_js_custom_runtime(self):
+        self.write_file('server.js', 'fake contents')
+        self.generate_configs(custom=True)
+        self.assert_file_exists_with_contents(
+            'app.yaml',
+            self.read_dist_file('data', 'app.yaml').format(runtime='custom'))
+        self.assertEqual(sorted(os.listdir(self.temp_path)),
+                         ['.dockerignore', 'Dockerfile', 'app.yaml',
+                          'server.js'])
+
+    def test_node_js_custom_runtime_no_write(self):
+        """Test generate_config_data with custom runtime.
+
+        Should generate an app.yaml on disk, the Dockerfile and
+        .dockerignore in memory."""
+        self.write_file('server.js', 'fake contents')
+        cfg_files = self.generate_config_data(custom=True)
+        self.assert_file_exists_with_contents(
+            'app.yaml',
+            self.read_dist_file('data', 'app.yaml').format(runtime='custom'))
+        self.assertEqual(set(os.listdir(self.temp_path)),
+                         {'app.yaml', 'server.js'})
+        self.assertEqual({f.filename for f in cfg_files},
+                         {'Dockerfile', '.dockerignore'})
+
+    def test_node_js_runtime_field(self):
+        self.write_file('server.js', 'fake contents')
+        config = testutil.AppInfoFake(runtime='nodejs')
+        self.generate_configs(appinfo=config, deploy=True)
+        self.assertTrue(os.path.exists(self.full_path('Dockerfile')))
+
+    def test_node_js_custom_runtime_field(self):
+        self.write_file('server.js', 'fake contents')
+        config = testutil.AppInfoFake(runtime='custom')
+        self.assertTrue(self.generate_configs(appinfo=config, deploy=True))
+
+    def test_invalid_package_json(self):
+        self.write_file('package.json', '')
+        self.write_file('server.js', '')
+        self.generate_configs()
+        self.assertFalse(self.generate_configs())
+
+    # Tests that verify that the generated files match verbatim output.
+    # These will need to be maintained whenever the code generation changes,
+    # but this ensures that any diffs we introduce in the generate files will
+    # be reviewed.
+
+    def test_node_js_with_engines_retroactive(self):
+        self.write_file('foo.js', 'bogus contents')
+        self.write_file('package.json',
+                        '{"scripts": {"start": "foo.js"},'
+                        '"engines": {"node": "0.12.3"}}')
+        self.generate_configs(deploy=True)
+        self.assert_file_exists_with_contents(
+            'Dockerfile',
+            textwrap.dedent("""\
+                # Dockerfile extending the generic Node image with application files for a
+                # single application.
+                FROM gcr.io/google_appengine/nodejs
+                # Check to see if the the version included in the base runtime satisfies
+                # 0.12.3, if not then do an npm install of the latest available
+                # version that satisfies it.
+                RUN /usr/local/bin/install_node 0.12.3
+                COPY . /app/
+                # You have to specify "--unsafe-perm" with npm install
+                # when running as root.  Failing to do this can cause
+                # install to appear to succeed even if a preinstall
+                # script fails, and may have other adverse consequences
+                # as well.
+                # This command will also cat the npm-debug.log file after the
+                # build, if it exists.
+                RUN npm install --unsafe-perm || \\
+                  ((if [ -f npm-debug.log ]; then \\
+                      cat npm-debug.log; \\
+                    fi) && false)
+                CMD npm start
+                """))
+
+
+class FailureLoggingTests(testutil.TestBase):
+
+    def setUp(self):
+        self.runtime_def_root = RUNTIME_DEF_ROOT
+        super(FailureLoggingTests, self).setUp()
+
+        self.errors = []
+        self.debug = []
+        self.warnings = []
+
+    def error_fake(self, message):
+        self.errors.append(message)
+
+    def debug_fake(self, message):
+        self.debug.append(message)
+
+    def warn_fake(self, message):
+        self.warnings.append(message)
+
+    def test_invalid_package_json(self):
+        self.write_file('package.json', '')
+        self.write_file('server.js', '')
+
+        variations = [
+            (testutil.AppInfoFake(runtime='nodejs'), None),
+            (None, 'nodejs'),
+            (None, None)
+        ]
+        for appinfo, runtime in variations:
+            self.errors = []
+            with mock.patch.dict(ext_runtime._LOG_FUNCS,
+                                 {'error': self.error_fake}):
+                self.generate_configs(appinfo=appinfo, runtime=runtime)
+
+            self.assertTrue(self.errors[0].startswith(
+                'node.js checker: error accessing package.json'))
+
+    def test_no_startup_script(self):
+        with mock.patch.dict(ext_runtime._LOG_FUNCS,
+                             {'debug': self.debug_fake}):
+            self.generate_configs()
+        print self.debug
+        self.assertTrue(self.debug[1].startswith(
+            'node.js checker: Neither "start" in the "scripts" section '
+            'of "package.json" nor the "server.js" file were found.'))
+
+        variations = [
+            (testutil.AppInfoFake(runtime='nodejs'), None),
+            (None, 'nodejs')
+        ]
+        for appinfo, runtime in variations:
+            self.errors = []
+            with mock.patch.dict(ext_runtime._LOG_FUNCS,
+                                 {'error': self.error_fake}):
+                self.generate_configs(appinfo=appinfo, runtime=runtime)
+            self.assertTrue(self.errors[0].startswith(
+                'node.js checker: Neither "start" in the "scripts" section '
+                'of "package.json" nor the "server.js" file were found.'))
+
+    def test_package_json_no_startup_script(self):
+        self.write_file('package.json', '{"scripts": {"not-start": "foo.js"}}')
+
+        variations = [
+            (testutil.AppInfoFake(runtime='nodejs'), None),
+            (None, 'nodejs'),
+            (None, None)
+        ]
+        for appinfo, runtime in variations:
+            self.errors = []
+            with mock.patch.dict(ext_runtime._LOG_FUNCS,
+                                 {'error': self.error_fake}):
+                self.generate_configs(appinfo=appinfo, runtime=runtime)
+            self.assertTrue(self.errors[0].startswith(
+                'node.js checker: Neither "start" in the "scripts" section '
+                'of "package.json" nor the "server.js" file were found.'))
+
+
+if __name__ == '__main__':
+  unittest.main()

gcloud auth application-default login/google-cloud-sdk/platform/ext-runtime/nodejs/testing.md

@@ -0,0 +1,22 @@
+
+Testing Notes
+=============
+
+To run the test script (`test/runtime_test.py`) you'll need to install the
+Google Cloud SDK add this to your PYTHONPATH:
+
+    export PYTHONPATH=$CLOUD_SDK/lib:$CLOUD_SDK/platform/google_appengine:$PYTHONPATH
+
+Where `$CLOUD_SDK` is the location where the cloud SDK is installed.
+
+Debugging
+---------
+
+If you do "sys.stderr.write(...)" from a plugin script, your output will go
+to a nice shiny bright warning message.  Exceptions will show up as warning
+messages simply by virtue of having been formatted to standard error.
+
+Full logging can be made to happen by adding:
+
+    from googlecloudsdk.core import log
+    log.SetVerbosity(logging.DEBUG)