X-Git-Url: http://www.average.org/gitweb/?p=loctrkd.git;a=blobdiff_plain;f=gps303%2Fevstore.py;h=c10ecb17e5d7a191d7bf75a76e768138cc9c2755;hp=70a3ac6618bec9bd67f53ff7fa9a30a6d92484c4;hb=96538346bd332d76d2cac5d6a0ef2b4e4a40de30;hpb=0c9ed98ee47630e854047f1e0fcf29326e137e36

diff --git a/gps303/evstore.py b/gps303/evstore.py
index 70a3ac6..c10ecb1 100644
--- a/gps303/evstore.py
+++ b/gps303/evstore.py
@@ -2,7 +2,7 @@
 
 from sqlite3 import connect
 
-__all__ = "initdb", "stow"
+__all__ = "fetch", "initdb", "stow"
 
 DB = None
 
@@ -43,3 +43,15 @@ def stow(**kwargs):
         parms,
     )
     DB.commit()
+
+def fetch(imei, protos, backlog):
+    assert DB is not None
+    protosel = ", ".join(["?" for _ in range(len(protos))])
+    cur = DB.cursor()
+    cur.execute(f"""select packet from events
+                    where proto in ({protosel}) and imei = ?
+                    order by tstamp desc limit ?""",
+                protos + (imei, backlog))
+    result = [row[0] for row in cur]
+    cur.close()
+    return result