ServiceNow Connector for PythonIn this article you will learn how to quickly and efficiently integrate ServiceNow data in Python. We will use high-performance ServiceNow Connector to easily connect to ServiceNow and then access the data inside Python. Allows the reading and writing of incidents, attachments, and more in ServiceNow without coding! The ZappySys ServiceNow API Connector provides easy-to-use, high-performance API access. Let's follow the steps below to see how we can accomplish that! ServiceNow Connector for Python is based on ZappySys API Driver which is part of ODBC PowerPack. It is a collection of high-performance ODBC drivers that enable you to integrate data in SQL Server, SSIS, a programming language, or any other ODBC-compatible application. ODBC PowerPack supports various file formats, sources and destinations, including REST/SOAP API, SFTP/FTP, storage services, and plain files, to mention a few. |
Connect to ServiceNow in other apps
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Create ODBC Data Source (DSN) based on ZappySys API Driver
Step-by-step instructions
To get data from ServiceNow using Python we first need to create a DSN (Data Source) which will access data from ServiceNow. We will later be able to read data using Python. Perform these steps:
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Install ZappySys ODBC PowerPack.
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Open ODBC Data Sources (x64):
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Create a User data source (User DSN) based on ZappySys API Driver
ZappySys API Driver-
Create and use User DSN
if the client application is run under a User Account.
This is an ideal option
in design-time , when developing a solution, e.g. in Visual Studio 2019. Use it for both type of applications - 64-bit and 32-bit. -
Create and use System DSN
if the client application is launched under a System Account, e.g. as a Windows Service.
Usually, this is an ideal option to use
in a production environment . Use ODBC Data Source Administrator (32-bit), instead of 64-bit version, if Windows Service is a 32-bit application.
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Create and use User DSN
if the client application is run under a User Account.
This is an ideal option
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When the Configuration window appears give your data source a name if you haven't done that already, then select "ServiceNow" from the list of Popular Connectors. If "ServiceNow" is not present in the list, then click "Search Online" and download it. Then set the path to the location where you downloaded it. Finally, click Continue >> to proceed with configuring the DSN:
ServicenowDSNServiceNow -
Now it's time to configure the Connection Manager. Select Authentication Type, e.g. Token Authentication. Then select API Base URL (in most cases, the default one is the right one). More info is available in the Authentication section.
Authenticate using ServiceNow instance username and password.
Steps how to get and use ServiceNow credentials
Locate your ServiceNow instance credentials and use them for HTTP authentication:
- Go to https://developer.servicenow.com/dev.do and log in.
- Click on your profile picture.
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When a menu appears, click on Manage instance password or a similar option:
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In a new window you will see your HTTP Basic Authentication credentials:
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Done! Use this username and password when configuring OAuth Authentication parameters.
Fill in all required parameters and set optional parameters if needed:
ServicenowDSNServiceNowBasic Auth [Http]https://[$InstanceName$].service-now.com/api/nowRequired Parameters InstanceName Fill-in the parameter... User name Fill-in the parameter... Password Fill-in the parameter... Optional Parameters ApiVersion v2 RetryMode RetryWhenStatusCodeMatch RetryStatusCodeList 429 RetryCountMax 5 RetryMultiplyWaitTime True Authenticate using ServiceNow instance username, password, OAuth Client ID, and Client Secret. [API reference]
Steps how to get and use ServiceNow credentials
Create OAuth application and use it for authentication:
- Login to your instance at https://your-instance-id.service-now.com.
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Start by clicking on menu item All, then search for oauth, and click Application Registry option:
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Then click button New:
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Continue by clicking Create an OAuth API endpoint for external clients option:
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Move on by naming your OAuth application and entering a Client Secret (or let it be generated automatically).
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Finally give it a final touch by increasing the Refresh Token Lifespan value to
315,360,000
(it should last for 10 years): -
Done! Now you can use Client ID and Client Secret when configuring OAuth Authentication parameters.
Fill in all required parameters and set optional parameters if needed:
ServicenowDSNServiceNowOAuth [OAuth]https://[$InstanceName$].service-now.com/api/nowRequired Parameters InstanceName Fill-in the parameter... User name Fill-in the parameter... Password Fill-in the parameter... Client ID Fill-in the parameter... Client Secret Fill-in the parameter... ApiVersion Fill-in the parameter... Optional Parameters RetryMode RetryWhenStatusCodeMatch RetryStatusCodeList 429|503 RetryCountMax 5 RetryMultiplyWaitTime True -
Once the data source has been configured, you can preview data. Select the Preview tab and use settings similar to the following to preview data:
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Click OK to finish creating the data source.
Video instructions
Read data in Python
Using ODBC DSN
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Python code to get the data:
ServicenowDSN') -
When you run the code it will make the API call and read the data:
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Here is Python program's code in text format:
import pyodbc conn = pyodbc.connect('DSN=ServicenowDSN') cursor = conn.cursor() #execute query to fetch data from API service cursor.execute("SELECT id,title FROM products") row = cursor.fetchone() while row: print(row) row = cursor.fetchone() ##For loop example #for row in cursor: # print(row)
Using a full ODBC connection string
If you want to avoid being dependent on a DSN and creating multiple DSNs for each platform (x86, x64), then you can use a fully qualified connection string. Simply go to your DSN and copy the Connection String:
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Open ODBC data source configuration and click Copy settings:
ZappySys API Driver - ServiceNowAllows the reading and writing of incidents, attachments, and more in ServiceNow without coding! The ZappySys ServiceNow API Connector provides easy-to-use, high-performance API access.ServicenowDSN
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The window opens, telling us the connection string was successfully copied to the clipboard:
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Then in your Python code use Connection String when initializing OdbcConnection object, for example:
conn = pyodbc.connect('DRIVER={ZappySys API Driver};ServiceUrl=https://yourservices.provider.com/api/xxxx....;AuthName=Http;')
How to install `pyodbc` in the Python?
You would need to install pyodbc
in Python if you intend to establish connections to databases that support ODBC (Open Database Connectivity). This module facilitates communication between Python applications and various database management systems, enabling you to perform operations such as querying, retrieving data, and managing databases. Here's how you can install pyodbc
in Python:
Installation Steps:
Ensure you have Python installed on your system. If not, download it from the official Python website and follow the installation instructions.
Open your terminal or command prompt.
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Use the following command to install
pyodbc
using pip, the Python package installer:python -m pip install "pyodbc"
Make sure you have a stable internet connection and the necessary permissions to install Python packages.
Reasons to Install:
- If pyodbc is not installed, your Python script will generate the following error:
"ModuleNotFoundError: No module named 'pyodbc'"
. Database Connectivity:
pyodbc
allows Python to connect to various databases that support ODBC, such as Microsoft SQL Server, PostgreSQL, MySQL, and more.Data Operations: It facilitates the execution of SQL queries, retrieval of data, and other database operations from within Python scripts.
Cross-Platform Support:
pyodbc
is designed to work across different operating systems, including Windows, macOS, and various Linux distributions.Simplicity and Efficiency: The module provides an intuitive interface for managing database transactions and connections, simplifying the process of working with databases in Python.
By installing pyodbc
, you can seamlessly integrate your Python applications with a wide range of ODBC-supported databases, enabling efficient and effective data management and analysis.
Advanced topics
Create Custom Stored Procedure in ZappySys Driver
You can create procedures to encapsulate custom logic and then only pass handful parameters rather than long SQL to execute your API call.
Steps to create Custom Stored Procedure in ZappySys Driver. You can insert Placeholders anywhere inside Procedure Body. Read more about placeholders here
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Go to Custom Objects Tab and Click on Add button and Select Add Procedure:
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Enter the desired Procedure name and click on OK:
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Select the created Stored Procedure and write the your desired stored procedure and Save it and it will create the custom stored procedure in the ZappySys Driver:
Here is an example stored procedure for ZappySys Driver. You can insert Placeholders anywhere inside Procedure Body. Read more about placeholders here
CREATE PROCEDURE [usp_get_orders] @fromdate = '<<yyyy-MM-dd,FUN_TODAY>>' AS SELECT * FROM Orders where OrderDate >= '<@fromdate>';
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That's it now go to Preview Tab and Execute your Stored Procedure using Exec Command. In this example it will extract the orders from the date 1996-01-01:
Exec usp_get_orders '1996-01-01';
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Let's generate the SQL Server Query Code to make the API call using stored procedure. Go to Code Generator Tab, select language as SQL Server and click on Generate button the generate the code.
As we already created the linked server for this Data Source, in that you just need to copy the Select Query and need to use the linked server name which we have apply on the place of [MY_API_SERVICE] placeholder.
SELECT * FROM OPENQUERY([LINKED_SERVER_TO_SERVICENOW_IN_DATA_GATEWAY], 'EXEC usp_get_orders @fromdate=''1996-07-30''')
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Now go to SQL served and execute that query and it will make the API call using stored procedure and provide you the response.
Create Custom Virtual Table in ZappySys Driver
ZappySys API Drivers support flexible Query language so you can override Default Properties you configured on Data Source such as URL, Body. This way you don't have to create multiple Data Sources if you like to read data from multiple EndPoints. However not every application support supplying custom SQL to driver so you can only select Table from list returned from driver.
If you're dealing with Microsoft Access and need to import data from an SQL query, it's important to note that Access doesn't allow direct import of SQL queries. Instead, you can create custom objects (Virtual Tables) to handle the import process.
Many applications like MS Access, Informatica Designer wont give you option to specify custom SQL when you import Objects. In such case Virtual Table is very useful. You can create many Virtual Tables on the same Data Source (e.g. If you have 50 URLs with slight variations you can create virtual tables with just URL as Parameter setting.
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Go to Custom Objects Tab and Click on Add button and Select Add Table:
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Enter the desired Table name and click on OK:
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And it will open the New Query Window Click on Cancel to close that window and go to Custom Objects Tab.
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Select the created table, Select Text Type AS SQL and write the your desired SQL Query and Save it and it will create the custom table in the ZappySys Driver:
Here is an example SQL query for ZappySys Driver. You can insert Placeholders also. Read more about placeholders here
SELECT "ShipCountry", "OrderID", "CustomerID", "EmployeeID", "OrderDate", "RequiredDate", "ShippedDate", "ShipVia", "Freight", "ShipName", "ShipAddress", "ShipCity", "ShipRegion", "ShipPostalCode" FROM "Orders" Where "ShipCountry"='USA'
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That's it now go to Preview Tab and Execute your custom virtual table query. In this example it will extract the orders for the USA Shipping Country only:
SELECT * FROM "vt__usa_orders_only"
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Let's generate the SQL Server Query Code to make the API call using stored procedure. Go to Code Generator Tab, select language as SQL Server and click on Generate button the generate the code.
As we already created the linked server for this Data Source, in that you just need to copy the Select Query and need to use the linked server name which we have apply on the place of [MY_API_SERVICE] placeholder.
SELECT * FROM OPENQUERY([LINKED_SERVER_TO_SERVICENOW_IN_DATA_GATEWAY], 'EXEC [usp_get_orders] ''1996-01-01''')
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Now go to SQL served and execute that query and it will make the API call using stored procedure and provide you the response.
Actions supported by ServiceNow Connector
ServiceNow Connector support following actions for REST API integration. If some actions are not listed below then you can easily edit Connector file and enhance out of the box functionality.Parameter | Description | ||||||||||
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Query |
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Fields |
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SysId |
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SysId |
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TableName |
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TableName |
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Fields to include in response (Keep blank to get all fields -OR- Enter comma separated list) |
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Query / Order By (Server Side Filter) |
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TableName |
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TableName |
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SysId |
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TableName |
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SysId |
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Url |
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IsMultiPart |
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Url |
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Filter |
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Headers |
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ServiceNow Connector Examples for Python Connection
This page offers a collection of SQL examples designed for seamless integration with the ZappySys API ODBC Driver under ODBC Data Source (36/64) or ZappySys Data Gateway, enhancing your ability to connect and interact with Prebuilt Connectors effectively.
Get a list of incidents [ Read more... ]
SELECT * FROM incident
--Using Primary Key
--SELECT * FROM any_table_here WHERE sys_id='109562a3c611227500a7b7ff98cc0dc7' --Primary Key in WHERE clause
--Using Filter Expression
--SELECT * FROM incident WITH(Query='number=INC0000001') --Equal condition
--SELECT * FROM incident WITH(Query='number!=INC0000001') --Not equal condition
--SELECT * FROM incident WITH(Query='numberININC0000001,INC0000002,INC0000003') --IN condition
--SELECT * FROM incident WITH(Query='number=INC0000001^state=7') --AND condition
--SELECT * FROM incident WITH(Query='number=INC0000001^ORnumber=INC0000002') --OR condition
--SELECT * FROM incident WITH(Query='numberLIKE0001') --LIKE condition
--SELECT * FROM incident WITH(Query='numberSTARTSWITHINC00') --StartWith condition
--SELECT * FROM incident WITH(Query='numberENDSWITH0001') --StartWith condition
--SELECT * FROM incident WITH(Query='number=INC0000001^state=7^NQORnumber=INC0000002') --AND / OR MIXED using NQ (NewQuery Operator) -- (number=INC0000001 and state=7) OR (number=INC0000002)
--more information about filter here https://docs.servicenow.com/bundle/utah-platform-user-interface/page/use/common-ui-elements/reference/r_OpAvailableFiltersQueries.html
-- To read all available tables execute this query:
-- SELECT * FROM Tables
-- Other common tables:
-----------------------
-- SELECT * FROM sys_db_object
-- SELECT * FROM sys_dictionary
-- SELECT * FROM sys_user
-- SELECT * FROM sys_user_has_role
-- SELECT * FROM sys_user_grmember
-- SELECT * FROM task
-- SELECT * FROM task_sla
-- SELECT * FROM incident
-- SELECT * FROM incident_sla
-- SELECT * FROM change_request
-- SELECT * FROM cmdb_ci_computer
-- SELECT * FROM cmdb_ci_outage
-- SELECT * FROM cmdb_ci
-- SELECT * FROM sn_customerservice_case
-- SELECT * FROM kb_knowledge
-- SELECT * FROM kb_use
-- SELECT * FROM sc_req_item
-- SELECT * FROM sc_request
-- SELECT * FROM sc_task
Get an incident by sys_id [ Read more... ]
SELECT * FROM incident
WHERE sys_id = 'SYS_ID_GOES_HERE'
Get only selected columns and speed up the query [ Read more... ]
By default all column values are returned in the result set. However, you can instruct the ServiceNow API to send only specific columns you care about by setting 'Fields' parameter in the WITH clause. This will speed up the response significantly.
SELECT number,name FROM incident WITH (Fields='number,name') --Setting Fields parameter will speed up the query
Get the display value of a reference field [ Read more... ]
This example shows how to get related record(s) from the reference field. Basically, you need to know referenced table name for that referenced field. Then you can query by sys_id (Primary Key)
--STEP#1 returns incident number and related company (sys_id)
SELECT number,company FROM incident
--STEP#2 find related table for company field
select name,reference from get_table_columns order by 1 WITH(TableName='incident')
--STEP#3 query related table with sys_id returned in step#1
select sys_id, name from core_company where sys_id='31bea3d53790200044e0bfc8bcbe5dec'
Query table using serverside filter expression [ Read more... ]
This example shows how to filter data from a table using server side filter expression. Its always faster to do this way rather than using in WHERE clause (Client Side Filter)
SELECT * FROM incident WITH(Query='number=INC0000001') --Equal condition
--syntax (single condition)
--sysparm_query=<col_name><operator><value>
--syntax (multiple conditions)
--sysparm_query=<col_name><operator><value>[<operator><col_name><operator><value>]
--more info check below links
-- https://docs.servicenow.com/bundle/rome-application-development/page/integrate/inbound-rest/concept/c_TableAPI.html#title_table-GET
-- https://docs.servicenow.com/bundle/utah-platform-user-interface/page/use/common-ui-elements/reference/r_OpAvailableFiltersQueries.html
-- Some More Advanced Params listed here
-- https://developer.servicenow.com/dev.do#!/learn/learning-plans/xanadu/servicenow_application_developer/app_store_learnv2_rest_xanadu_request_parameters
--More examples
--SELECT * FROM any_table_here WHERE sys_id='109562a3c611227500a7b7ff98cc0dc7' --Primary Key in WHERE clause
--SELECT * FROM incident WITH(Query='number=INC0000001') --Equal condition
--SELECT * FROM incident WITH(Query='number!=INC0000001') --Not equal condition
--SELECT * FROM incident WITH(Query='numberININC0000001,INC0000002,INC0000003') --IN condition
--SELECT * FROM incident WITH(Query='number=INC0000001^state=7') --AND condition
--SELECT * FROM incident WITH(Query='number=INC0000001^ORnumber=INC0000002') --OR condition
--SELECT * FROM incident WITH(Query='numberLIKE0001') --LIKE condition
--SELECT * FROM incident WITH(Query='numberSTARTSWITHINC00') --StartWith condition
--SELECT * FROM incident WITH(Query='numberENDSWITH0001') --StartWith condition
--SELECT * FROM incident WITH(Query='number=INC0000001^state=7^NQORnumber=INC0000002') --AND / OR MIXED using NQ (NewQuery Operator) -- (number=INC0000001 and state=7) OR (number=INC0000002)
Create an incident [ Read more... ]
INSERT INTO incident(incident_state, severity, category, cause)
VALUES (3, 1, 'software', 'Missing a software feature.')
Update an incident [ Read more... ]
UPDATE incident
SET cause = 'A bug in the software'
,severity = 3
,incident_state = 2
WHERE sys_id = 'SYS_ID_GOES_HERE'
Delete an incident [ Read more... ]
DELETE incident
WHERE sys_id = 'SYS_ID_GOES_HERE'
Get a list of tables [ Read more... ]
SELECT * FROM Tables
Get a list of system tables [ Read more... ]
SELECT * FROM SystemTables
Get a list of user tables [ Read more... ]
SELECT * FROM UserTables
Get columns of a specific table [ Read more... ]
SELECT * FROM get_table_columns
where name = 'TableNameGoesHere'
Get all columns of all tables (can be slow) [ Read more... ]
SELECT * FROM get_table_columns_admin --requires readonly permissions on sys_dictionary and sys_db_object tables
Use 'generic_request' endpoint to get Accounts [ Read more... ]
Use 'generic_request' endpoint to get Accounts (or access another ServiceNow API). Use ServiceNow API Reference and Query Builder to build custom requests.
SELECT *
FROM generic_request
WITH(
Url='/v2/table/incident?sysparm_limit=10000&sysparm_query=numberLIKE0001^ORDERBYsys_created_on',
Filter='$.result',
Meta='sys_id:string;number:string;business_stc:int', --//comment this to see all columns (SLOW)
PagingMode='ByResponseHeaderRfc5988',
--Method='GET',
--Body='{your POST body}'
)
-- Request URL should be partial like this one:
-- /v2/some_table?some-parameter=somevalue1&some-parameter=somevalue2
Conclusion
In this article we showed you how to connect to ServiceNow in Python and integrate data without any coding, saving you time and effort. We encourage you to download ServiceNow Connector for Python and see how easy it is to use it for yourself or your team.
If you have any questions, feel free to contact ZappySys support team. You can also open a live chat immediately by clicking on the chat icon below.
Download ServiceNow Connector for Python Documentation
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