WIP: no path collision and email

src/caosadvancedtools/serverside/examples/example_script.py

@@ -40,12 +40,44 @@ import numpy as np
 from caosadvancedtools.cfood import assure_property_is
 from caosadvancedtools.guard import INSERT, UPDATE
 from caosadvancedtools.guard import global_guard as guard
+from caosadvancedtools.serverside.helper import send_mail as main_send_mail
 
 logger = logging.getLogger(__name__)
 
 guard.set_level(level=UPDATE)
 
 
+def send_mail(self, changes):
+    """ calls sendmail in order to send a mail to the curator about pending
+    changes
+
+    Parameters:
+    -----------
+    changes: The CaosDB entities in the version after the update.
+    """
+
+    caosdb_config = db.configuration.get_config()
+    text = """Dear Curator,
+The following changes where done automatically.
+
+{changes}
+    """.format(changes="\n".join(changes))
+    try:
+        fro = caosdb_config["advancedtools"]["automated_updates.from_mail"]
+        to = caosdb_config["advancedtools"]["automated_updates.to_mail"]
+    except KeyError:
+        logger.error("Server Configuration is missing a setting for "
+                     "sending mails. The administrator should check "
+                     "'from_mail' and 'to_mail'.")
+        return
+
+    main_send_mail(
+        from_addr=fro,
+        to=to,
+        subject="Automated Update",
+        body=text)
+
+
 def main(args):
     # TODO (maybe) can these checks be replaced by a more declaritive appoach?
     try:
@@ -84,19 +116,20 @@ def main(args):
     # ####################################################################### #
 
     # Insert the result plot
-    # TODO (must): how do we find a good file path??
     fig = db.File(file=filename,
-                  path="/uploaded/something3/"+str(datetime.now())+filename)
+                  path="/Analysis/results/"+str(datetime.now())+"/"+filename)
     fig.insert()
 
     # Add the result to the analysis Record
     # An update should only be done if necessary: assure_property_is should be
     # used instead of direct calls to 'update'.
 
+    to_be_updated = []
     assure_property_is(
         dataAnalysisRecord,
         "mean_value",
         mean,
+        to_be_updated=to_be_updated
     )
     # TODO (maybe) this is not really meaningful since an uploaded file will always
     # be different.... Compare checksums of files?
@@ -104,7 +137,12 @@ def main(args):
         dataAnalysisRecord,
         "results",
         fig.id,
+        to_be_updated=to_be_updated
     )
+
+    if len(to_be_updated) > 0:
+        send_mail(to_be_updated)
+
     # TODO (must) what should be done with the old file? Removed if not referenced?
 
     # TODO (maybe) inform about updates (reuse stuff from crawler.py?)