PDF Generation Service

Overview

The objective of PDF generation service is to bulk generate pdf as per requirement.

Pre-requisites

Before you proceed with the documentation, make sure the following pre-requisites are met -

• Install npm.

• Kafka server is up and running.

• egov-persister service is running and has pdf generation persister config path added in it.

• PSQL server is running and the database is created to store filestore id and job id of generated pdf.

Key Functionalities

• Provide a common framework to generate PDF.

• Provide flexibility to customise the PDF as per the requirement.

• Provide functionality to add an image, Qr Code in PDF.

• Provide functionality to generate pdf in bulk.

• Provide functionality to specify a maximum number of records to be written in one PDF.

Environment Variables	Description
MAX_NUMBER_PAGES	Maximum number of records to be written in one PDF
DATE_TIMEZONE	Date timezone which will be used to convert epoch timestamp into date (DD/MM/YYYY)
DEFAULT_LOCALISATION_LOCALE	Default value of localisation locale
DEFAULT_LOCALISATION_TENANT	Default value of localisation tenant
DATA_CONFIG_URLS	File path/URL'S of data config
FORMAT_CONFIG_URLS	File path/URL'S of format config

External Libraries used :

• PDFMake: (https://github.com/bpampuch/pdfmake - Connect to preview ):- for generating PDFs
• Mustache.js: (https://github.com/janl/mustache.js/ ):- as templating engine to populate format as defined in format config, from request json based on mappings defined in data config

Interaction Diagram

Deployment Details

1. Create data config and format config for a PDF according to product requirement.

2. Add data config and format config files in PDF configuration

3. Add the file path of data and format config in the environment yml file

4. Deploy the latest version of pdf-service in a particular environment.

Configuration Details

For Configuration details please refer to Customizing PDF Receipts & Certificates.

Integration

Integration Scope

The PDF configuration can be used by any module which needs to show particular information in PDF format that can be print/downloaded by the user.

Integration Benefits

• Functionality to generate PDFs in bulk.

• Avoid regeneration.

• Support QR codes and Images.

• Functionality to specify the maximum number of records to be written in one PDF.

• Uploading generated PDF to filestore and return filestore id for easy access.

Steps to Integration

1. To download and print the required PDF _create API has to be called with the required key (For Integration with UI, please refer to the links in Reference Docs)

Reference Docs

Doc Links

Title	Link
Customizing PDF Receipts & Certificates	Customizing PDF Receipts & Certificates
Steps for Integration of PDF in UI for download and print PDF	Integration of PDF in UI for download and print PDF
API Swagger Documentation	Swagger Documentation

API List

	Link
pdf-service/v1/_create	https://www.getpostman.com/collections/5a9bfd6fd03f9f2a6fad
pdf-service/v1/_createnosave	https://www.getpostman.com/collections/5a9bfd6fd03f9f2a6fad
pdf-service/v1/_search	https://www.getpostman.com/collections/5a9bfd6fd03f9f2a6fad

(Note: All the API’s are in the same postman collection, therefore, the same link is added in each row)

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