servicenow-rest-api-with-promise

Wrapper library for ServiceNow REST API

Usage no npm install needed!

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  import servicenowRestApiWithPromise from 'https://cdn.skypack.dev/servicenow-rest-api-with-promise';
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README

ServiceNow REST API

MIT

Node.JS wrapper library for ServiceNow REST API.

NPM

Table of Contents

Installing

Run npm install servicenow-rest-api to install the package.

Basic Usage

Request

  1. Get reference to servicenow package.
  2. Initialize servicenow object.
  3. Call authenticate function.
  4. You can now access Servicenow data by calling functions.
const sn=require('servicenow-rest-api');

const ServiceNow=new sn('_INSTANCE','_USERID','_PASSWORD', false); // prefer callback to be passed to library
If you want promise to be returned, 
const ServiceNow=new sn('_INSTANCE','_USERID','_PASSWORD', true); // prefer to accept promise from library
ServiceNow.Authenticate();

ServiceNow.getSampleData('change_request',(res)=>{    // 
    console.log(res);
});

Response

[ { parent: '',
    reason: '',
    made_sla: 'false',
    backout_plan: 'Current prod environment to be snapshotted with VmWare\n            prior to change.\n        ',
    watch_list: '',
    upon_reject: '',
    sys_updated_on: '2017-08-10 12:42:23',
    type: 'normal',
    conflict_status: '',
    approval_history: '',
    number: 'CHG0000001',
    test_plan: 'Multi-User testing on Sunday night',
    cab_delegate: '',
    sys_updated_by: 'admin',
    .
    .
    .

Supported REST API calls

In this package, wrappers are available for below REST interfaces.

API GET POST PUT DELETE
Table API /now/v2/table/{tableName} now/v2/table/{tableName} now/v2/table/{tableName}/{sys_id} now/v2/table/{tableName}/{sys_id}
/now/v2/table/{tableName}/{sys_id}

Functions

1. ServiceNow.Authenticate

Parameters
Callback function
##### If you have set preferPromise true in constructor, you do not need to pass callback. all methods will return their promise.

Request

ServiceNow.Authenticate(res=>{
    console.log(res.status);
});

Response

res.status

200

For complete response use res.raw

{ status: 200,
  statusText: 'OK',
  headers:
   { 'set-cookie':
      [_cookieinfo],
     'x-is-logged-in': 'true',
     'x-total-count': '1',
     pragma: 'no-store,no-cache',
     'cache-control': 'no-cache,no-store,must-revalidate,max-age=-1',
     expires: '0',
     'content-type': 'application/json;charset=UTF-8',
     'transfer-encoding': 'chunked',
     .
     .
     .

2. ServiceNow.getSampleData

This function can be used as a reference to get sample data for tables in ServiceNow. This can be used to check the fields in a table.

Parameters Description
type Table type in ServiceNow (incident,change_request)
Callback function Response will be available as a parameter to callback function

Request

ServiceNow.getSampleData('change_request',(res)=>{
    console.log(res);
});

Response

[ { parent: '',
    made_sla: 'false',
    caused_by: '',
    watch_list: '',
    upon_reject: '',
    sys_updated_on: '2017-08-10 20:16:07',
    child_incidents: '',
    hold_reason: '',
    approval_history: '',
    number: 'INC0000001',

3. ServiceNow.getTableData

Access ServiceNow table data using this function.

Parameters Description
fields Fields that you want from ServiceNow table. Pass an empty array if you want to get all the fields
filters Filters that has to be applied on ServiceNow table. Pass an empty array if filters are not required.
type type of table - incident, change_request
callback function Response will be available as a parameter to this function

Request

const fields=[
    'number',
    'short_description',
    'assignment_group',
    'priority'
];

const filters=[
    'urgency=1'
];

ServiceNow.getTableData(fields,filters,'incident',function(res){
    console.log(res);
});

Response

https://devserver.service-now.com/api/now/v2/table/incident?sysparm_display_value=true&sysparm_fields=number,short_description,assignment_group,p
riority&sysparm_query=urgency=1
[ { number: 'INC0000025',
    short_description: 'Need to add more memory to laptop',
    assignment_group: '',
    priority: '1 - Critical' },
  { number: 'INC0000016',
    short_description: 'Rain is leaking on main DNS Server',
    assignment_group:
     { display_value: 'Hardware',
       link: 'https://dev16219.service-now.com/api/now/v2/table/sys_user_group/8a5055c9c61122780043563ef53438e3' },
    priority: '1 - Critical' },
    .
    .
    .

4. ServiceNow.getSysId

Used as a reference to get sys_id of a record in ServiceNow.

Parameters Description
type type of table - incident, change_request
number Ticket number in ServiceNow
callback function Response will be available as a parameter to this function

Request

ServiceNow.getSysId('incident','INC0000016',res=>{
    console.log(res);
});

Response

46e3e949a9fe19810069b824ba2c761a

5. ServiceNow.createNewTask

This is used to create a new task in ServiceNow.

Parameters Description
data Object that contains data for your record
type type of table - incident, change_request
callback function Response will be available as a parameter to this function

Request

const data={
    'short_description':'Need urgent attention!!',
    'urgency':'1',
    'priority':'1',
    'assignment_group':'Hardware'
};

ServiceNow.createNewTask(data,'incident',res=>{
    console.log(res);
});

Response

{ parent: '',
  made_sla: 'true',
  caused_by: '',
  watch_list: '',
  upon_reject: 'Cancel all future Tasks',
  sys_updated_on: '2017-10-30 22:24:30',
  child_incidents: '0',
  hold_reason: '',
  approval_history: '',
  number: 'INC0010006',
  resolved_by: '',
  sys_updated_by: 'admin',
  .
  .
  .

6. ServiceNow.UpdateTask

This is used to update existing record in ServiceNow.

Parameters Description
type type of table - incident, change_request
number Ticket number in ServiceNow
data Object that contains data for your record
callback function Response will be available as a parameter to this function

Request

const data={
    'work_notes':'Assigning this to different team',
    'assignment_group':'Network'
};

ServiceNow.UpdateTask('incident','INC0010006',data,res=>{
    console.log(res);
});

Response

{ parent: '',
  made_sla: 'true',
  caused_by: '',
  watch_list: '',
  upon_reject: 'Cancel all future Tasks',
  sys_updated_on: '2017-10-30 22:31:49',
  child_incidents: '0',
  hold_reason: '',
  approval_history: '',
  number: 'INC0010006',
  .
  .
  .
  work_notes: '2017-10-30 22:31:49 - System Administrator (Work notes)\nAssigning this to different team\n\n',
  short_description: 'Need urgent attention!!',
  close_code: null,
  correlation_display: '',
  delivery_task: '',
  work_start: '',
  assignment_group:
   { display_value: 'Network',
   .
   .
   .

7. ServiceNow.DeleteTask

To delete an existing record in ServiceNow table.

Parameters Description
type type of table - incident, change_request
number Ticket number in ServiceNow
callback function Response will be available as a parameter to this function

Request

ServiceNow.DeleteTask('incident','INC0010006',res=>{
    console.log(res.status);
});

Response

204

Examples

1. Get critical incidents which are open for last 6 months.

Request

const sn = require('servicenow-rest-api');
const ServiceNow = new sn('devserver','admin','password');

ServiceNow.Authenticate();

const fields =[
    'number',
    'short_description',
    'assignment_group',
    'assigned_to'
];

const filters=[
    'priority=1',
    'state=In Progress',
    'opened_atONLast 6 months@javascript:gs.beginningOfLast6Months()@javascript:gs.endOfLast6Months()' //Opened on last 6 months
];

ServiceNow.getTableData(fields,filters,'incident',res=>{
    console.log(res);
});

Response

[ { number: 'INC0000003',
    short_description: 'Wireless access is down in my area',
    assignment_group:
     { display_value: 'Network',
       link: 'https://devserver.service-now.com/api/now/v2/table/sys_user_group/287ebd7da9fe198100f92cc8d1d2154e' },
    assigned_to:
     { display_value: 'Beth Anglin',
       link: 'https://devserver.service-now.com/api/now/v2/table/sys_user/46d44a23a9fe19810012d100cca80666' } },
  { number: 'INC0000050',
    short_description: 'Can\'t access Exchange server - is it down?',
    assignment_group:
     { display_value: 'Hardware',
       link: 'https://devserver.service-now.com/api/now/v2/table/sys_user_group/8a5055c9c61122780043563ef53438e3' },
       .
       .
       .

2. Create an Emergency change to reboot server

Request

const sn = require('servicenow-rest-api');
const ServiceNow = new sn('devserver','admin','password');

ServiceNow.Authenticate();

const changeData={
    'short_description':'Reboot Server',
    'priority':'1',
    'risk':'High',
    'type':'Emergency',
    'assignment_group':'Hardware'
};
     

ServiceNow.createNewTask(changeData,'change_request',res=>{
    console.log(res);
});

Response

{ parent: '',
  reason: null,
  made_sla: 'true',
  backout_plan: '',
  watch_list: '',
  upon_reject: 'Cancel all future Tasks',
  sys_updated_on: '2017-11-03 07:37:23',
  type: 'Emergency',
  conflict_status: 'Not Run',
  approval_history: '',
  number: 'CHG0030003',
  .
  .
  .
  short_description: 'Reboot Server',
  close_code: null,
  correlation_display: '',
  delivery_task: '',
  work_start: '',
  assignment_group:
   { display_value: 'Hardware',
   .
   .
   .

3. Elevate priority of ticket

Request

const sn = require('servicenow-rest-api');
const ServiceNow = new sn('devserver','admin','password');

ServiceNow.Authenticate();

const incidentData={
    'work_notes':'Elevating priority of ticket as per business request',
    'urgency':'1',
    'impact':'1'
};
     
ServiceNow.UpdateTask('incident','INC0010007',incidentData,res=>{
    console.log(res);
});

Response

{ parent: '',
  made_sla: 'true',
  caused_by: '',
  watch_list: '',
  upon_reject: 'Cancel all future Tasks',
  sys_updated_on: '2017-11-03 08:25:17',
  child_incidents: '0',
  hold_reason: '',
  approval_history: '',
  number: 'INC0010007',
  .
  .
  .
  impact: '1 - High',
  active: 'true',
  work_notes_list: '',
  business_service: '',
  priority: '1 - Critical',
  .
  .
  .
   work_notes: '2017-11-03 08:25:17 - System Administrator (Work notes)\nElevating priority of ticket as per business request\n',
  short_description: 'Cannot connect to internet',

License

This project is licensed under the MIT License - see the LICENSE file for details