PDF print server written in Rust

To convert html to pdf please submit as POST request to /pdf url with data as below where mandatory parameters are one of the body or url including header ‘Authorization: Basic somebase64===’

body => html content to be converted to pdf
url => url where html content is located

pub struct Pdf {
    pub landscape: Option<bool>,
    pub display_header_footer: Option<bool>,
    pub footer: Option<String>,
    pub header: Option<String>,
    pub body: Option<String>, //one of the following is mandatory: html, url
    pub url: Option<String>, //one of the following is mandatory: html, url
    pub margin_top: Option<f64>,
    pub margin_left: Option<f64>,
    pub margin_right: Option<f64>,
    pub margin_bottom: Option<f64>,
    pub print_background: Option<bool>,
    pub prefer_css_page_size: Option<bool>,
}

Body sample can be written as follow:

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    
    <style>
        /* PDF STYLING */
        table.report-container {
            page-break-after: always;
            width: 100%;
        }

        thead.report-header {
            display: table-header-group;
        }

        tfoot.report-footer {
            display: table-footer-group;
        }

        .footer-space,
        .footer {
            height: 270px;
        }

        .footer {
            position: fixed;
            bottom: 0;
        }
        @page {
            size: A4;
            margin: 5mm 17mm 20mm 17mm; 
        }

        /* rest of styles */

      
    </style>
</head>

<body>
    <table class="report-container">
        <thead class="report-header">
            <tr>
                <th class="report-header-cell">
                    <div class="header-info">
                        <table style="padding-bottom: 32px; width: 100%; margin-bottom: 20px">
                            <tr>
                                <td>
                                    <img style="display: block; height: 55px"
                                        src="data:image/png;base64, iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNk+A8AAQUBAScY42YAAAAASUVORK5CYII="
                                        alt="Logo" width="auto" />
                                </td>
                                <td>
                                    <table style="text-align: right; margin: 0 0 0 auto">
                                        <tr>
                                            <td style="font-size: 32px; font-weight: 600; padding-bottom: 10px">Faktura:
                                                <span
                                                    style="color: #efa523; margin-left: 32px; display: inline-block">I230000028</span>
                                            </td>
                                        </tr>
                                        <tr>
                                            <td style="font-weight: 500;">Data wystawienia <span
                                                    style="font-weight: 400; display: inline-block; margin-left: 24px">16.11.2023</span>
                                            </td>
                                        </tr>
                                        <tr>
                                            <td style="font-weight: 500;">Data sprzedaży <span
                                                    style="font-weight: 400; margin-left: 24px">15.11.2023</span></td>
                                        </tr>
                                    </table>
                                </td>
                            </tr>
                        </table>
                    </div>
                </th>
            </tr>
        </thead>
        <tbody class="report-content">
            <tr>
                <td class="report-content-cell">
                   <h1>YOUR HTML CODE IN TABLES</h1>
                </td>
            </tr>
        </tbody>
    </table>
</body>

</html>

Consider to not change tags with classes included in styles sestion above.

To build docker image run the following

Build program with taget for musl as it needs to run in alpine docker

in case you neto have already installed toolchain for musl you need to run…

rustup target add x86_64-unknown-linux-musl

cargo build -r --target x86_64-unknown-linux-musl

then build docker image

docker build ./ -t print-rs:latest

to start docker and have all ready to serve:

docker run -d --cpus=1 --cpus 3 -m 1024m --cap-add=SYS_ADMIN --name print-rs -p 2000:3000 print-rs start_server

Test

To perform tests you need to first start application and then you can run:

cargo test

To insert printing service in you docker-compose:

pdf:
    image: registry.ma-al.site/print-rs:latest
    command: start_server
    ports:
      - "8000:3000"
    restart: always
    cap_add:
      - SYS_ADMIN
    environment:
      - TZ=CET-1CES