[bin] meshroom_compute: verbosity

- add option to control verbosity
- in extern mode: disable logging and enable it only for the node
computation (to avoid polluting the node's log with general warnings)

bin/meshroom_compute

@@ -1,5 +1,7 @@
 #!/usr/bin/env python
 import argparse
+import logging
+import os
 import sys
 
 try:
@@ -12,6 +14,7 @@ except:
     import meshroom
 meshroom.setupEnvironment()
 
+import meshroom.core
 import meshroom.core.graph
 from meshroom.core.node import Status
 
@@ -32,12 +35,30 @@ parser.add_argument('--extern', help='Use this option when you compute externall
 parser.add_argument('--cache', metavar='FOLDER', type=str,
                     default=None,
                     help='Override the cache folder')
+parser.add_argument('-v', '--verbose',
+                    help='Set the verbosity level for logging:\n'
+                            '  - fatal: Show only critical errors.\n'
+                            '  - error: Show errors only.\n'
+                            '  - warning: Show warnings and errors.\n'
+                            '  - info: Show standard informational messages.\n'
+                            '  - debug: Show detailed debug information.\n'
+                            '  - trace: Show all messages, including trace-level details.',
+                    default=os.environ.get('MESHROOM_VERBOSE', 'info'),
+                    choices=['fatal', 'error', 'warning', 'info', 'debug', 'trace'])
 
 parser.add_argument('-i', '--iteration', type=int,
                     default=-1, help='')
 
 args = parser.parse_args()
 
+# Setup the verbose level
+if args.extern:
+    # For extern computation, we want to focus on the node computation log.
+    # So, we avoid polluting the log with general warning about plugins, versions of nodes in file, etc.
+    logging.getLogger().setLevel(level=logging.ERROR)
+else:
+    logging.getLogger().setLevel(meshroom.logStringToPython[args.verbose])
+
 meshroom.core.initNodes()
 
 graph = meshroom.core.graph.loadGraph(args.graphFile)
@@ -63,6 +84,10 @@ if args.node:
                 print('Warning: Node is already submitted with status "{}". See file: "{}"'.format(chunk.status.status.name, chunk.statusFile))
                 # sys.exit(-1)
 
+    if args.extern:
+        # Restore the log level
+        logging.getLogger().setLevel(meshroom.logStringToPython[args.verbose])
+
     node.preprocess()
     if args.iteration != -1:
         chunk = node.chunks[args.iteration]