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postmanparser

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Introduction

Postman collection parser written in python3 to extract HTTP requests/responses. Currently supports reading JSON schema two ways

  • Read from .json file
  • Fetch from url where schema is exposed

Installation

  • Using pip

     pip install postmanparser
    
  • Using poetry

      poetry add postmanparser
    

Getting Started

Parsing API Schema

You can parse API schema from file or from url as below.

  • From file
from postmanparser import Collection
collection = Collection()
collection.parse_from_file("path/to/postman/schema.json")
  • From url
from postmanparser import Collection
collection = Collection()
collection.parse_from_url("http://example.com/schema")

URL should be a GET request.

postmanparser also validates for the required fields mentioned by postman schema documentation which is available at https://schema.postman.com/

Reading the data

Postman collection contains group of requests and one or more folders having group of requests and/or nested folders in it.

Getting requests from the collection

You can retreive all the requests present in the collection using get_requests() method. This method will recursively search for the requests inside folders is present.

collection = Collection()
collection.parse_from_file("path/to/postman/schema.json")
requests = collection.get_requests()
for request in requests:
        print(request) #Either a Request object or str

You can retrieve the requests inside specific folder by using folder="folder_name" in get_requests method. To get requests from the nested folder, use folder path separated by /

For e.g. to get requests inside folder2 which is nested in folder1

requests = collection.get_requests(folder="folder/sub_folder")

You can pass recursive=False to get_requests() if you don't want to do recusrive lookup. In this case you will get all the requests present at the root level of collection or at the folder level is folder is specified.

requests = collection.get_requests(recursive=False)

Getting requests mapped by folder in the collection

You can access requests in the collections as requests map using get_requests_map(). The key of the dict is path to the folder separated by backlash and value is list of requests of type Request or str. This will be recursive search for all the folders and sub folders inside it.

collection = Collection()
collection.parse_from_file("path/to/postman/schema.json")
requests = collection.get_requests_map()
requests = collection.get_requests_map(folder="folder/sub_folder")

Validation

If schema found to be invalid following exception will be thrown.

  • MissingRequiredFieldException
  • InvalidPropertyValueException
  • InvalidObjectException
  • FolderNotFoundException

Schema Support

postmanparser is still in early stages and will be updated with missing schema components soon.

Following are the objects which are not supported yet but will be added in the future.

  • protocolProfileBehavior

Collection SDK Compatibility

Currently postmanparser is not aligned with collection SDK node module. http://www.postmanlabs.com/postman-collection/

This Might be added in future. Feel free to raise the PR.

Version Compatibility

postmanparser supports collection schema v2.0.0 and v2.1.0.

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