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postman-code-generators

This module converts a Postman SDK Request Object into a code snippet of chosen language.

Every code generator has two identifiers: language and variant.

• language of a code generator is the programming language in which the code snippet is generated.
• variant of a code generator is the methodology or the underlying library used by the language to send requests.

List of supported code generators:

Language	Variant
C	libcurl
C#	RestSharp
cURL	cURL
Dart	http
Go	Native
HTTP	HTTP
Java	OkHttp
Java	Unirest
JavaScript	Fetch
JavaScript	jQuery
JavaScript	XHR
NodeJs	Axios
NodeJs	Native
NodeJs	Request
NodeJs	Unirest
Objective-C	NSURLSession
OCaml	Cohttp
PHP	cURL
PHP	pecl_http
PHP	HTTP_Request2
PowerShell	RestMethod
Python	http.client
Python	Requests
Ruby	Net:HTTP
Shell	Httpie
Shell	wget
Swift	URLSession

Table of contents

1. Getting Started
2. Prerequisite
3. Usage
   1. Using postman code generators as a Library
4. Development
   1. Installing Dependencies
   2. Testing
   3. Packaging
5. Contributing
6. License

Getting Started

To install postman-code-generators as your dependency

1$ npm install postman-code-generators

To get a copy on your local machine

1$ git clone https://github.com/postmanlabs/postman-code-generators.git

Prerequisite

To run any of the postman-code-generators, ensure that you have NodeJS >= v8. A copy of the NodeJS installable can be downloaded from https://nodejs.org/en/download/package-manager.

Usage

Using postman-code-generators as a Library

There are three functions that are exposed in postman-code-generators: getLanguageList, getOptions, and convert.

getLanguageList

This function returns a list of supported code generators.

Example:

1var codegen = require('postman-code-generators'), // require postman-code-generators in your project
2    supportedCodegens = codegen.getLanguageList();
3    console.log(supportedCodegens);
4    // output:
5    // [
6    //   {
7    //     key: 'nodejs',
8    //     label: 'NodeJs',
9    //     syntax_mode: 'javascript',
10    //     variant: [
11    //       {
12    //         key: 'Requests'
13    //       },
14    //       {
15    //         key: 'Native'
16    //       },
17    //       {
18    //         key: 'Unirest'
19    //       }
20    //     ]
21    //   },
22    //   ...
23    // ]

getOptions

This function takes in three parameters and returns a callback with error and supported options of that code generator.

• language - language key from the language list returned from getLanguageList function
• variant - variant key provided by getLanguageList function
• callback - callback function with first parameter as error and second parameter as array of options supported by the codegen.

A typical option has the following properties:

• name - Display name
• id - unique ID of the option
• type - Data type of the option. (Allowed data types: boolean, enum, positiveInteger)
• default - Default value. The value that is used if this option is not specified while creating code snippet
• description - User friendly description.

Example:

1var codegen = require('postman-code-generators'), // require postman-code-generators in your project
2    language = 'nodejs',
3    variant = 'Request';
4
5    codegen.getOptions(language, variant, function (error, options) {
6      if (error) {
7        // handle error
8      }
9      console.log(options);
10    });
11// output: 
12//     [
13//     {
14//       name: 'Set indentation count',
15//       id: 'indentCount',
16//       type: 'positiveInteger',
17//       default: 2,
18//       description: 'Set the number of indentation characters to add per code level'
19//     },
20//     {
21//       name: 'Set indentation type',
22//       id: 'indentType',
23//       type: 'enum',
24//       availableOptions: ['Tab', 'Space'],
25//       default: 'Space',
26//       description: 'Select the character used to indent lines of code'
27//     },
28//     ...
29//   ];

convert

This function takes in five parameters and returns a callback with error and generated code snippet

• language - lang key from the language list returned from getLanguageList function
• variant - variant key provided by getLanguageList function
• request - Postman-SDK Request Object
• options - Options that can be used to configure generated code snippet. Defaults will be used for the unspecified attributes
• callback - callback function with first parameter as error and second parameter as string for code snippet

Example:

1var codegen = require('postman-code-generators'), // require postman-code-generators in your project
2    sdk = require('postman-collection'), // require postman-collection in your project
3    request = new sdk.Request('https://www.google.com'),  //using postman sdk to create request 
4    language = 'nodejs',
5    variant = 'request',
6    options = {
7        indentCount: 3,
8        indentType: 'Space',
9        trimRequestBody: true,
10        followRedirect: true
11    };
12codegen.convert(language, variant, request, options, function(error, snippet) {
13    if (error) {
14        //  handle error
15    }
16    //  handle snippet
17});

Development

Installing dependencies

This command will install all the dependencies in production mode.

1$ npm install;

To install dev dependencies also for all codegens run:

1$ npm run deepinstall dev; 

Testing

To run common repo test as well as tests (common structure test + individual codegen tests) for all the codegens

1$ npm test; 

To run structure and individual tests on a single codegen

1$ npm test <codegen-name>;
2# Here "codege-name" is the folder name of the codegen inside codegens folder

Packaging

To create zipped package of all codegens

1$ npm run package;

Note: The zipped package is created inside each codegen's folder.

To create zipped package of a single codegen

1$ npm run package <codegen-name>

Contributing

Please take a moment to read our contributing guide to learn about our development process. Open an issue first to discuss potential changes/additions.

License

This software is licensed under Apache-2.0. Copyright Postman, Inc. See the LICENSE.md file for more information.