oberonamsterdam · mreguly · Dec 19, 2021 · Dec 19, 2021 · Dec 19, 2021
diff --git a/ubuntu20-python3/Dockerfile b/ubuntu20-python3/Dockerfile
@@ -0,0 +1,22 @@
+FROM ubuntu:20.04
+
+ENV DEBIAN_FRONTEND noninteractive
+
+ADD app.py /app.py
+
+RUN sed 's/main$/main universe/' -i /etc/apt/sources.list \
+    && apt-get update && apt-get upgrade -y \
+    && apt-get install -y build-essential xorg libssl-dev libxrender-dev wget python3-pip vim --no-install-recommends xvfb libfontconfig libjpeg-turbo8 xfonts-75dpi fontconfig \
+    && wget https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6-1/wkhtmltox_0.12.6-1.focal_amd64.deb \
+    && apt install ./wkhtmltox_0.12.6-1.focal_amd64.deb \
+    && pip install werkzeug executor gunicorn futures gunicorn[eventlet] gunicorn[gevent] gunicorn[tornado] gunicorn[gthread] \
+    && apt-get -y clean \
+    && apt-get -y purge \
+    && rm wkhtmltox_0.12.6-1.focal_amd64.deb \
+    && rm -rf /var/lib/apt/lists/* /tmp/*
+
+EXPOSE 6500
+
+ENTRYPOINT ["usr/local/bin/gunicorn"]
+
+CMD ["-b", "0.0.0.0:6500", "--access-logfile", "-", "--error-logfile", "-", "--log-level", "debug", "app:application"]
diff --git a/ubuntu20-python3/README.md b/ubuntu20-python3/README.md
@@ -0,0 +1,63 @@
+New features:
+
+* Updated to Ubuntu 20.04
+* Updated WKHTMLTOPDF to 0.12.6-1
+* Updated to Python3.8
+
+
+## Build the image
+
+`cd ubuntu20-python3`
+
+`docker build -t wkhtmltopdf .`
+
+
+## Run the container
+
+`docker run -d -p 6500:6500 localhost/wkhtmltopdf`
+
+
+## Python3 file example
+
+``` python
+import requests
+
+with open('input_file.html', 'r') as f:
+    html = f.read()
+
+response = requests.post('http://127.0.0.1:6500/', files={'file': html})
+
+with open('output_file.pdf', 'w+b') as f:
+    f.write(response.content)
+```
+
+
+## Python3 json example
+
+``` python
+import json
+import requests
+
+html = """<!DOCTYPE html>
+<html>
+    <head>
+        <title>Horay!</title>
+    </head>	
+    <body>
+        <h1>Hello World!</h1>		
+    </body>
+</html>
+"""
+
+data = {
+    'contents': html,
+}
+headers = {
+    'Content-Type': 'application/json',  # This is important
+}
+
+response = requests.post('http://127.0.0.1:6500/', data=json.dumps(data), headers=headers)
+
+with open('output_file.pdf', 'w+b') as f:
+    f.write(response.content)
+```
diff --git a/ubuntu20-python3/app.py b/ubuntu20-python3/app.py
@@ -0,0 +1,81 @@
+#! /usr/bin/env python
+"""
+    WSGI APP to convert wkhtmltopdf As a webservice
+    :copyright: (c) 2013 by Openlabs Technologies & Consulting (P) Limited
+    :license: BSD, see LICENSE for more details.
+"""
+import json
+import tempfile
+import subprocess
+
+from werkzeug.wsgi import wrap_file
+from werkzeug.wrappers import Request, Response
+from executor import execute
+
+
+@Request.application
+def application(request):
+    """
+    To use this application, the user must send a POST request with
+    base64 or form encoded encoded HTML content and the wkhtmltopdf Options in
+    request data, with keys 'base64_html' and 'options'.
+    The application will return a response with the PDF file.
+    """
+    if request.method != 'POST':
+        return
+
+    request_is_json = request.content_type.endswith('json')
+    with tempfile.NamedTemporaryFile(suffix='.html', mode='w+b') as source_file:
+        options = {}
+        if request_is_json:
+            # If a JSON payload is there, all data is in the payload
+            payload = json.loads(request.data.decode())
+            source_file.write(payload['contents'].encode())
+            options = payload.get('options', {})
+        elif request.files:
+            # First check if any files were uploaded
+            pdf_file = request.files['file']
+            f_content = pdf_file.read()
+            source_file.write(f_content)
+
+            # Load any options that may have been provided in options
+            options = json.loads(request.form.get('options', '{}'))
+
+        source_file.flush()
+
+        # Evaluate argument to run with subprocess
+        args = ['/usr/bin/xvfb-run', 'wkhtmltopdf']
+
+        # Add Global Options
+        if options:
+            for option, value in options.items():
+                args.append('--%s' % option)
+                if option == 'header-html':
+                    subprocess.call(["wget", value, "-O", "/tmp/header.html"])
+                    value = "/tmp/header.html"
+
+                if option == 'footer-html':
+                    subprocess.call(["wget", value, "-O", "/tmp/footer.html"])
+                    value = "/tmp/footer.html"
+
+                if value:
+                    args.append('"%s"' % value)
+
+        # Add source file name and output file name
+        file_name = source_file.name
+        args += [file_name, file_name + ".pdf"]
+        # Execute the command using executor
+        execute(' '.join(args))
+
+        return Response(
+            wrap_file(request.environ, open(file_name + '.pdf', 'r+b')),
+            mimetype='application/pdf',
+        )
+
+
+if __name__ == '__main__':
+    from werkzeug.serving import run_simple
+
+    run_simple(
+        '127.0.0.1', 15000, application, use_debugger=True, use_reloader=True
+    )