Better logging

docker_server.sh

@@ -4,4 +4,4 @@ set -ex
 
 docker build --tag=docker.nsd.no/programvareutvikling/python-file-submission-poc .
 
-docker run --memory="100M" --publish=8090:8090 docker.nsd.no/programvareutvikling/python-file-submission-poc
+docker run -it --memory="100M" --publish=8090:8090 docker.nsd.no/programvareutvikling/python-file-submission-poc

flask_app.py

@@ -17,20 +17,23 @@ app = flask.Flask(__name__)
 @app.route('/', defaults={'path': ''}, methods = ['POST'])
 @app.route('/<path:path>', methods = ['POST'])
 def hello(path):
+    app.logger.info('new request')
     def custom_stream_factory(total_content_length, filename, content_type, content_length=None):
-        tmpfile = tempfile.NamedTemporaryFile('wb+')
+        tmpfile = tempfile.NamedTemporaryFile('wb+', prefix='flaskapp')
+        app.logger.info("start receiving file ... filename => " + str(tmpfile.name))
         return tmpfile
     ms = measure_spent_time()
+    
     stream,form,files = werkzeug.formparser.parse_form_data(flask.request.environ, stream_factory=custom_stream_factory)
     total_size = 0
     
     for fil in files.values():
-        print("saved form name", fil.name, "submitted as", fil.filename, "to temporary file", fil.stream.name)
+        app.logger.info(" ".join(["saved form name", fil.name, "submitted as", fil.filename, "to temporary file", fil.stream.name]))
         total_size += os.path.getsize(fil.stream.name)
     mb_per_s = "%.1f" % ((total_size / (1024.0*1024.0)) / ((1.0+ms(raw=True))/1000.0))
-    print("handling POST request, spent", ms(), "ms.", mb_per_s, "MB/s.", "Number of files:", len(files.values()))
+    app.logger.info(" ".join([str(x) for x in ["handling POST request, spent", ms(), "ms.", mb_per_s, "MB/s.", "Number of files:", len(files.values())]]))
     process = psutil.Process(os.getpid())
-    print("memory usage: %.1f MiB" % (process.memory_info().rss / (1024.0*1024.0)))
+    app.logger.info("memory usage: %.1f MiB" % (process.memory_info().rss / (1024.0*1024.0)))
 
     return "Hello World!"