[APERO] Deal with trigger run and idb_len=0 v0.8 [Issue #776]

apero/tools/module/processing/drs_processing.py

@@ -1837,6 +1837,16 @@ def generate_run_from_sequence(params: ParamDict, sequence,
     # ------------------------------------------------------------------
     # get length of database at this point
     idb_len = indexdb.database.count(condition=ref_condition)
+    # need to deal with being a trigger run
+    if 'TRIGGER_RUN' in params:
+        trigger_cond = drs_text.true_text(params['TRIGGER_RUN'])
+        # test whether we need to stop here
+        if trigger_cond and idb_len == 0:
+            # display message that we stopped here as no files were found
+            wmsg = 'No files found for trigger run'
+            WLOG(params, 'info', wmsg)
+            # stop processing recipes
+            return []
     # deal with empty database (after conditions)
     if idb_len == 0:
         eargs = [ref_condition, func_name]
@@ -1846,6 +1856,7 @@ def generate_run_from_sequence(params: ParamDict, sequence,
         if not response:
             WLOG(params, 'error', 'User chose to exit')
             raise SystemExit()
+
     # log that we are processing recipes
     if logmsg:
         WLOG(params, 'info', textentry('40-503-00037', args=[idb_len]))