Telephony Integration REST API Sample Code

1const jwt = require('jsonwebtoken');
2const SSM = require('aws-sdk/clients/ssm');
3const uuid = require('uuid/v1');
4
5// SCRT EndPoint Base example: https://MyDomainName.my.salesforce-scrt.com/telephony/v1 
6// Contact your admin to get the exact URL. This should have been configured as part 
7// of the Service Cloud Voice Setup.
8
9const axios = require('axios').create({
10    baseURL: "ScrtEndpointBase"
11});
12
13// Example function to retrieve privateKey parameter using Amazon Systems Manager 
14async function getSSMParameterValue(paramName, withDecryption) {
15    return await new Promise(resolve => {
16        const ssm = new SSM();
17        const query = {
18            Names:  [paramName],
19            WithDecryption: withDecryption
20        };
21        
22        ssm.getParameters(query, (err, data) => {
23            let paramValue = null;
24            
25            if (!err && data && data.Parameters && data.Parameters.length) {
26                paramValue = data.Parameters[0].Value;
27            }
28            
29            resolve(paramValue);
30        });
31    });
32}
33
34// Generate a JWT based on the specified parameters.
35async function generateJWT(params) {
36    const { privateKeyParamName, orgId, callCenterApiName, expiresIn } = params;
37    // Retrieve privateKey from the param store
38    const privateKey = await getSSMParameterValue(privateKeyParamName, true);
39    const signOptions = {
40        issuer: orgId,
41        subject:  callCenterApiName,
42        expiresIn:  expiresIn,
43        algorithm:  'RS256',
44        jwtid: uuid()
45    };
46
47    return jwt.sign({}, privateKey, signOptions);
48}
49
50// Function to Create VoiceCall 
51async function createVoiceCall(fieldValues) {
52    const generateJWTParams = {
53        privateKeyParamName   : "YourPrivateKeyParamName",
54        orgId                 : "YourSalesforceOrganizationId",
55        callCenterApiName     : "YourSalesforceCallCenterAPIName",
56        expiresIn             : "TokenExpiryTime"
57    };
58    
59    const jwt = await generateJWT(generateJWTParams);
60    
61    var fieldValues = {
62        "vendorCallKey":"5324881f-1e84-4367-8930-f69a74b30ca6",
63        "callCenterApiName":"HVCC",
64        "to":"8002345678",
65        "from":"4081456688",
66        "initiationMethod":"Inbound",
67        "startTime":"2020-07-13T11:43:01Z",
68        "participants":
69            [{"participantKey":"+18033568299",
70            "type": "END_USER"
71            }]
72    };
73    
74    const response = await axios.post('/voiceCalls', fieldValues, {
75        headers: {
76            'Authorization': `Bearer ${jwt}`,
77            'Content-Type': 'application/json'
78        }
79    })
80    .then(response => { 
81        return response;
82    })
83    .catch(error => {
84        let context = {};
85        if (error.response) {
86            // The request was made and the server responded with 
87            // a status code that falls out of the range of 2xx
88            context = error.response.data;
89        } else if (error.request) {
90            // The request was made but no response was received
91            context = error.request;
92        } else {
93            // Something happened in setting up the request that triggered an error
94            context = error.message;
95        }
96         throw new Error('Error creating VoiceCall record');
97    });
98
99    return response.data;
100}