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SalesforceService.js
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SalesforceService.js
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var bluebird = require('bluebird'),
config = require('config/environment'),
jsforce = require('jsforce');
var RedisService = require('services/RedisService'),
SalesforceService;
/**
* A Service used to interact with Salesforce.
*/
SalesforceService = (function() {
/**
* Utility for getting a jsforce OAuth2 object instance.
*
* @returns {OAuth2} - A jsforce OAuth2 instance.
*/
function getOAuth2() {
return new jsforce.OAuth2({
// you can change loginUrl to connect to sandbox or prerelease env.
// loginUrl : 'https://test.salesforce.com',
clientId: config.app.key,
clientSecret: config.app.secret,
redirectUri: config.app.callbackURL
});
}
/**
* Utility for getting a jsforce connection object.
*
* @returns {Connecton} - A jsforce connection object.
*/
function getConnection() {
var self = this;
return RedisService.hgetall('AuthorizationInfo')
.then(function(AuthInfo) {
// Create a single instance of the jsForce connection object configured for OAuth.
var conn;
if (!AuthInfo) {
conn = new jsforce.Connection({oauth2: self.getOAuth2()});
} else {
conn = new jsforce.Connection({
oauth2 : {
clientId : config.app.key,
clientSecret : config.app.secret,
redirectUri : config.app.callbackURL
},
instanceUrl : AuthInfo.instanceUrl,
accessToken : AuthInfo.accessToken
});
}
// Promisify all standard node functions from the connection.
bluebird.promisifyAll(Object.getPrototypeOf(conn));
return conn;
})
.catch(function(err) {
console.error(err, 'Error encountered in getConnection');
throw err;
});
}
/**
* Get the Authorization url used to start the OAuth flow with SF.
* @returns {String} - The Url that should be navigated to for authorization.
*/
function getAuthorizationUrl() {
return this.getOAuth2().getAuthorizationUrl({scope: config.sf.scope});
}
/**
* Handler function for configuring the jsForce library to use the provided code
* when handling the callback from SF authorization.
*
* @param {String} code - The code provided by the SF OAuth2 flow.
* @returns {Promise} - A promise that resolves after the configuration is complete.
*/
function processOAuthCode(code) {
var self = this;
return RedisService.del('AuthorizationInfo')
.then(function() {
return self.getConnection()
})
.then(function(conn) {
return [conn, conn.authorizeAsync(code)];
})
.spread(function(conn, userInfo) {
return RedisService.hmset('AuthorizationInfo', {
accessToken: conn.accessToken,
instanceUrl: conn.instanceUrl,
userId: userInfo.id,
orgId: userInfo.organizationId
});
})
.catch(function(e) {
console.error(e);
throw e;
});
}
/**
* Get the list of object types for the SF instance.
*
* @returns {Promise} - A promise that resolves to a list of object types.
*/
function getObjectTypes() {
return this.getConnection()
.then(function(conn) {
return conn.describeGlobalAsync();
});
}
/**
* Get the description of an sObject from Salesforce.
*
* @param {String} objectName - The name of the sObject for which to retireve
* the description.
* @returns {Promise} - A promise that resolves to an object describing the requested
* sObject type.
*/
function describeObject(objectName) {
return this.getConnection()
.then(function(conn) {
return bluebird.promisify(conn.sobject(objectName).describe)();
});
}
/**
* Get recent objects from salesforce. If no objectName params is provided
* then a list of all most recent objects will be returned.
*
* @param {String} [objectName] - The name of the sobjectType to retrieve.
* @returns {Promise} - A promise that resolves to a list of
* recent objects.
*/
function getRecentObjects(objectName) {
if (objectName) {
return this.getConnection()
.then(function(conn) {
return bluebird.fromNode(function(callback) {
conn.sobject(objectName).recent(callback);
}).then(function(result) {
return result;
});
});
} else {
return this.getConnection()
.then(function(conn) {
return conn.recentAsync();
});
}
}
function getChatterCommunities() {
return this.getConnection()
.then(function(conn) {
return conn.chatter.resource('/connect/communities').retrieve()
.then(function(result) {
console.log(result);
return result;
});
});
}
return {
describeObject: describeObject,
getAuthorizationUrl: getAuthorizationUrl,
getChatterCommunities: bluebird.method(getChatterCommunities),
getConnection: getConnection,
getObjectTypes: getObjectTypes,
getOAuth2: getOAuth2,
getRecentObjects: getRecentObjects,
processOAuthCode: processOAuthCode
}
})();
module.exports = SalesforceService;