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index.js
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index.js
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var rp = require('request-promise');
var fs = require('fs');
var google = require('googleapis');
var PROJECT_ID = 'PROJECT_ID';
var HOST = 'https://firebaseremoteconfig.googleapis.com';
var PATH = '/v1/projects/' + PROJECT_ID + '/remoteConfig';
var SCOPES = ['https://www.googleapis.com/auth/firebase.remoteconfig'];
/**
* Get a valid access token.
*/
// [START retrieve_access_token]
function getAccessToken() {
return new Promise(function(resolve, reject) {
var key = require('./service-account.json');
var jwtClient = new google.auth.JWT(
key.client_email,
null,
key.private_key,
SCOPES,
null
);
jwtClient.authorize(function(err, tokens) {
if (err) {
reject(err);
return;
}
resolve(tokens.access_token);
});
});
}
// [END retrieve_access_token]
/**
* Retrieve the current Firebase Remote Config template from the server. Once
* retrieved the template is stored locally in a file named `config.json`.
*/
function getTemplate() {
getAccessToken().then(function(accessToken) {
var options = {
uri: HOST + PATH,
method: 'GET',
gzip: true,
resolveWithFullResponse: true,
headers: {
'Authorization': 'Bearer ' + accessToken,
'Accept-Encoding': 'gzip',
}
};
rp(options)
.then(function(resp) {
fs.writeFileSync('config.json', resp.body);
console.log('Retrieved template has been written to file config.json');
console.log('ETag from server: ' + resp.headers['etag']);
})
.catch(function(err) {
console.error('Unable to get template');
console.error(err);
});
});
}
/**
* Print the last 5 available Firebase Remote Config template metadata from the server.
*/
function listVersions() {
getAccessToken().then(function(accessToken) {
const options = {
uri: HOST + PATH + ':listVersions?pageSize=5',
method: 'GET',
resolveWithFullResponse: true,
headers: {
'Authorization': 'Bearer ' + accessToken,
},
};
rp(options)
.then(function(resp) {
console.log('Versions:');
console.log(resp.body);
})
.catch(function(err) {
console.error('Unable to list versions');
console.error(err);
});
});
}
/**
* Roll back to an available version of Firebase Remote Config template.
*
* @param version Version of the template to roll back to.
*/
function rollback(version) {
getAccessToken().then(function(accessToken) {
const options = {
uri: HOST + PATH + ':rollback',
method: 'POST',
gzip: true,
json: true,
resolveWithFullResponse: true,
headers: {
'Authorization': 'Bearer ' + accessToken,
'Content-Type': 'application/json; UTF-8',
'Accept-Encoding': 'gzip',
},
body: {
version_number: version
}
};
rp(options)
.then(function(resp) {
console.log('Rolled back to: ' + version);
console.log(resp.body);
const newETag = resp.headers['etag'];
console.log('ETag from server: ' + newETag);
})
.catch(function(err) {
console.error('Request to roll back to template: ' + version + ' failed.');
console.error(err);
});
});
}
/**
* Publish the local template stored in `config.json` to the server.
*
* @param {String} etag ETag must be supplied when publishing a template. This is to
* avoid race conditions when publishing.
*/
function publishTemplate(etag) {
getAccessToken().then(function(accessToken) {
var options = {
method: 'PUT',
uri: HOST + PATH,
body: fs.readFileSync('config.json', 'UTF8'),
gzip: true,
resolveWithFullResponse: true,
headers: {
'Authorization': 'Bearer ' + accessToken,
'Content-Type': 'application/json; UTF-8',
'If-Match': etag
}
};
rp(options)
.then(function(resp) {
var newETag = resp.headers['etag'];
console.log('Template has been published');
console.log('ETag from server: ' + newETag);
})
.catch(function(err) {
console.error('Unable to publish template.');
console.error(err);
});
});
}
const action = process.argv[2];
const etagOrVersion = process.argv[3];
if (action && action === 'get') {
getTemplate();
} else if (action && action === 'publish' && etagOrVersion) {
publishTemplate(etagOrVersion);
} else if (action && action === 'versions') {
listVersions();
} else if (action && action === 'rollback' && etagOrVersion) {
rollback(etagOrVersion);
} else {
console.log('Invalid command. Please use one of the following:\n'
+ 'node index.js get\n'
+ 'node index.js publish <LATEST_ETAG>\n'
+ 'node index.js versions\n'
+ 'node index.js rollback <TEMPLATE_VERSION_NUMBER>');
}