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## Pub/Sub Samples | ||
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These samples require two environment variables to be set: | ||
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- `GOOGLE_APPLICATION_CREDENTIALS` - Path to a service account file. You can | ||
download one from your Google project's "permissions" page. | ||
- `TEST_PROJECT_ID` - Id of your Google project. | ||
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## Run a sample | ||
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Install dependencies: | ||
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npm install | ||
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To print available commands: | ||
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npm run | ||
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Execute a sample: | ||
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npm run <sample> | ||
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Example: | ||
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npm run subscription |
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// Copyright 2016, Google, Inc. | ||
// 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. | ||
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'use strict'; | ||
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var async = require('async'); | ||
var utils = require('./subscription'); | ||
var createTopic = utils.createTopic; | ||
var subscribe = utils.subscribe; | ||
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// [START get_topic_policy] | ||
function getTopicPolicy(topic, callback) { | ||
// Retrieve the IAM policy for the provided topic | ||
topic.iam.getPolicy(callback); | ||
} | ||
// [END get_topic_policy] | ||
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// [START get_subscription_policy] | ||
function getSubscriptionPolicy(subscription, callback) { | ||
// Retrieve the IAM policy for the provided subscription | ||
subscription.iam.getPolicy(callback); | ||
} | ||
// [END get_subscription_policy] | ||
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// [START set_topic_policy] | ||
function setTopicPolicy(topic, callback) { | ||
// Policy update | ||
var myPolicy = { | ||
bindings: [ | ||
{ | ||
role: 'roles/pubsub.subscriber', | ||
members: ['serviceAccount:myotherproject@appspot.gserviceaccount.com'] | ||
} | ||
] | ||
}; | ||
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// Retrieve the IAM policy for the provided topic | ||
topic.iam.setPolicy(myPolicy, callback); | ||
} | ||
// [END set_topic_policy] | ||
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// [START set_subscription_policy] | ||
function setSubscriptionPolicy(subscription, callback) { | ||
// Policy update | ||
var myPolicy = { | ||
bindings: [ | ||
{ | ||
role: 'roles/pubsub.subscriber', | ||
members: ['serviceAccount:myotherproject@appspot.gserviceaccount.com'] | ||
} | ||
] | ||
}; | ||
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// Retrieve the IAM policy for the provided subscription | ||
subscription.iam.setPolicy(myPolicy, callback); | ||
} | ||
// [END set_subscription_policy] | ||
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// [START test_topic_permissions] | ||
function testTopicPermissions(topic, callback) { | ||
var tests = [ | ||
'pubsub.topics.attachSubscription', | ||
'pubsub.topics.publish', | ||
'pubsub.topics.update' | ||
]; | ||
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// Retrieve the IAM policy for the provided topic | ||
topic.iam.testPermissions(tests, callback); | ||
} | ||
// [END test_topic_permissions] | ||
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// [START test_subscription_permissions] | ||
function testSubscriptionPermissions(subscription, callback) { | ||
var tests = [ | ||
'pubsub.subscriptions.consume', | ||
'pubsub.subscriptions.update' | ||
]; | ||
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// Retrieve the IAM policy for the provided subscription | ||
subscription.iam.testPermissions(tests, callback); | ||
} | ||
// [END test_subscription_permissions] | ||
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exports.getTopicPolicy = getTopicPolicy; | ||
exports.getSubscriptionPolicy = getSubscriptionPolicy; | ||
exports.setTopicPolicy = setTopicPolicy; | ||
exports.setSubscriptionPolicy = setSubscriptionPolicy; | ||
exports.testTopicPermissions = testTopicPermissions; | ||
exports.testSubscriptionPermissions = testSubscriptionPermissions; | ||
exports.runSample = runSample; | ||
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function runSample(callback) { | ||
var _subscription; | ||
var _topic; | ||
// Gather responses | ||
var responses = []; | ||
async.waterfall([ | ||
function (cb) { | ||
console.log('create topic...'); | ||
createTopic(cb); | ||
}, | ||
function (topic, apiResponse, cb) { | ||
_topic = topic; | ||
responses.push([topic, apiResponse]); | ||
console.log('created topic'); | ||
console.log('get topic IAM policy...'); | ||
getTopicPolicy(topic, cb); | ||
}, | ||
function (policy, apiResponse, cb) { | ||
responses.push([policy, apiResponse]); | ||
console.log('got topic policy', policy); | ||
// IAM server is down? | ||
// console.log('updating topic policy...'); | ||
// setTopicPolicy(_topic, cb); | ||
// }, | ||
// function (policy, apiResponse, cb) { | ||
// responses.push([policy, apiResponse]); | ||
// console.log('updated topic policy', policy); | ||
console.log('testing topic permissions...'); | ||
testTopicPermissions(_topic, cb); | ||
}, | ||
function (permissions, apiResponse, cb) { | ||
responses.push([permissions, apiResponse]); | ||
console.log('tested topic permissions', permissions); | ||
console.log('create subscription...'); | ||
subscribe(cb); | ||
}, | ||
function (subscription, apiResponse, cb) { | ||
_subscription = subscription; | ||
responses.push([subscription, apiResponse]); | ||
console.log('created subscription'); | ||
console.log('get subscription IAM policy...'); | ||
getSubscriptionPolicy(subscription, cb); | ||
}, | ||
function (policy, apiResponse, cb) { | ||
responses.push([policy, apiResponse]); | ||
console.log('got subscription policy', policy); | ||
// IAM server is down? | ||
// console.log('updating subscription policy...'); | ||
// setSubscriptionPolicy(_subscription, cb); | ||
// }, | ||
// function (policy, apiResponse, cb) { | ||
// responses.push([policy, apiResponse]); | ||
// console.log('updated subscription policy', policy); | ||
console.log('testing subscription permissions...'); | ||
testSubscriptionPermissions(_subscription, cb); | ||
}, | ||
function (permissions, apiResponse, cb) { | ||
responses.push([permissions, apiResponse]); | ||
console.log('tested subscription permissions', permissions); | ||
console.log('deleting subscription...'); | ||
_subscription.delete(cb); | ||
}, | ||
function (apiResponse, cb) { | ||
console.log('deleted subscription'); | ||
console.log('deleting topic...'); | ||
_topic.delete(cb); | ||
} | ||
], function (err) { | ||
if (err) { | ||
console.error(err); | ||
} else { | ||
console.log('deleted topic'); | ||
} | ||
if (typeof callback === 'function') { | ||
callback(err, responses); | ||
} | ||
}); | ||
} | ||
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if (module === require.main) { | ||
runSample(); | ||
} |
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{ | ||
"name": "nodejs-docs-samples-pubsub", | ||
"description": "Node.js samples for Google Cloud Pub/Sub.", | ||
"version": "0.0.1", | ||
"private": true, | ||
"license": "Apache Version 2.0", | ||
"engines": { | ||
"node": ">=0.10.x" | ||
}, | ||
"scripts": { | ||
"iam": "node iam.js", | ||
"subscription": "node subscription.js" | ||
}, | ||
"dependencies": { | ||
"gcloud": "^0.27.0" | ||
} | ||
} |
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