implementing daemon

[photosort.git] / src / bunch.py

diff --git a/src/bunch.py b/src/bunch.py
new file mode 100644 (file)
index 0000000..713a618
--- /dev/null
+++ b/src/bunch.py
@@ -0,0 +1,57 @@
+import logging
+import time
+import threading
+
+from dirtrigger import DirTrigger
+from migrator import Migrator
+
+class Bunch:
+    class TriggeredSource:
+        def __init__(self, trigger, migrator, cleanup):
+            self.trigger = trigger
+            self.migrator = migrator
+            self.cleanup = cleanup
+
+    def __init__(self, cfg):
+        self._id = cfg['id']
+        self._sources = []
+        for src_dir_cfg in cfg['src_dirs']:
+            self._sources.append(
+                Bunch.TriggeredSource(
+                    DirTrigger(src_dir_cfg['path']),
+                    Migrator(src_dir_cfg['path'], cfg['dst_dir']['path']),
+                    src_dir_cfg['cleanup']
+                )
+            )
+        logging.info("Created bunch %s with %d sources.", self._id, len(self._sources))
+
+    def start(self):
+        logging.info("Starting bunch %s...", self._id)
+        self._stop = False
+        self._worker_thread = threading.Thread(target=self._worker)
+        self._worker_thread.start()
+
+    def stop(self):
+        logging.info("Stopping bunch %s...", self._id)
+        self._stop = True
+        self._worker_thread.join()
+        logging.info("Stopped bunch %s.", self._id)
+
+    def _worker(self):
+        # start triggers
+
+        while not self._stop:
+            for source in self._sources:
+                try:
+                    if source.trigger.is_triggering():
+                        logging.info("Got source trigger for bunch %s.", self._id)
+                        source.trigger.reset()
+                        source.migrator.migrate()
+                        if source.cleanup:
+                            source.migrator.cleanup()
+                except Exception as e:
+                    logging.error("Error migrating source for bunch %s: %s",
+                                  self._id, str(e))
+            time.sleep(10.0)
+
+        # stop triggers