analyze file and return result

Dockerfile

@@ -38,6 +38,6 @@ WORKDIR /app
 COPY ./requirements.txt .
 RUN pip install -r requirements.txt
 
-COPY app.py gunicorn.conf.py ./
+COPY app.py gunicorn_conf.py ./
 
-ENTRYPOINT ["gunicorn", "--conf", "gunicorn.conf.py", "--bind", "0.0.0.0:80", "app:app"]
+ENTRYPOINT ["gunicorn", "--conf", "gunicorn_conf.py", "--bind", "0.0.0.0:80", "app:app"]

app.py

@@ -1,12 +1,56 @@
-from flask import Flask
+from flask import Flask, request, flash, Response
+from werkzeug.utils import secure_filename
+import logging
+from os import path, remove
+import tempfile
+import subprocess as sp
 
 app = Flask(__name__)
 
 
-@app.route('/', methods=["GET"])
-def hello_world():  # put application's code here
-    return 'Hello World!'
+def get_format(req, fallback=("application/json", "json")):
+    accept = req.headers.get("accept").lower()
+    if accept == "application/json":
+        return accept, "json"
+    elif accept == "application/xml":
+        return accept, "xml"
+    elif accept == "text/plain":
+        return accept, "txt"
+    else:
+        return fallback
 
 
+@app.route('/analyze', methods=["POST"])
+def analyze():
+    if "file" not in request.files or len(request.files["file"].filename) == 0:
+        flash("No file.")
+        return
+
+    # save file to tmp folder
+    file = request.files["file"]
+    file_path = path.join(tempfile.gettempdir(), secure_filename(file.filename))
+    app.logger.debug(f"saving file as {file_path}")
+    file.save(file_path)
+
+
+
+    mime, response_format = get_format(request)
+    cmd = ["java", "-jar", "/pdfact.jar", file_path, "--format", response_format]
+    app.logger.debug(f"running {' '.join(cmd)}")
+
+    try:
+        result = sp.check_output(cmd)
+        return Response(result, mimetype=mime)
+    except sp.CalledProcessError:
+        return "Something went wrong", 500
+    finally:
+        remove(file_path)
+
 if __name__ == '__main__':
-    app.run(host="0.0.0.0", port=5000)
+    app.run()
+else:
+    # use gunicorns loglevel
+    gunicorn_logger = logging.getLogger("gunicorn.error")
+    app.logger.handlers = gunicorn_logger.handlers
+    app.logger.setLevel(gunicorn_logger.level)
+    app.logger.warn(gunicorn_logger.level)