X-Git-Url: http://average.org/gitweb/?a=blobdiff_plain;f=gps303%2Fevstore.py;h=07b6dc4b760b7de08349611e844168ab0e80470a;hb=bf48ccad4b4b91e7d7e09d1087f5953bc2db97d7;hp=76173624bed9069359f202f46d07e0eba3cc8491;hpb=5e1e7a4d37a1e149d5e899dada7b55a863cd8e64;p=loctrkd.git

diff --git a/gps303/evstore.py b/gps303/evstore.py
index 7617362..07b6dc4 100644
--- a/gps303/evstore.py
+++ b/gps303/evstore.py
@@ -1,6 +1,7 @@
 """ sqlite event store """
 
 from sqlite3 import connect, OperationalError
+from typing import Any, List, Tuple
 
 __all__ = "fetch", "initdb", "stow"
 
@@ -11,22 +12,24 @@ SCHEMA = """create table if not exists events (
     imei text,
     peeraddr text not null,
     is_incoming int not null default TRUE,
-    proto int not null,
+    proto text not null,
     packet blob
 )"""
 
 
-def initdb(dbname):
+def initdb(dbname: str) -> None:
     global DB
     DB = connect(dbname)
     try:
-        DB.execute("""alter table events add column
-                is_incoming int not null default TRUE""")
+        DB.execute(
+            """alter table events add column
+                is_incoming int not null default TRUE"""
+        )
     except OperationalError:
         DB.execute(SCHEMA)
 
 
-def stow(**kwargs):
+def stow(**kwargs: Any) -> None:
     assert DB is not None
     parms = {
         k: kwargs[k] if k in kwargs else v
@@ -35,7 +38,7 @@ def stow(**kwargs):
             ("peeraddr", None),
             ("when", 0.0),
             ("imei", None),
-            ("proto", -1),
+            ("proto", "UNKNOWN"),
             ("packet", b""),
         )
     }
@@ -50,14 +53,24 @@ def stow(**kwargs):
     )
     DB.commit()
 
-def fetch(imei, protos, backlog):
+
+def fetch(
+    imei: str, matchlist: List[Tuple[bool, str]], backlog: int
+) -> List[Tuple[bool, float, bytes]]:
+    # matchlist is a list of tuples (is_incoming, proto)
+    # returns a list of tuples (is_incoming, timestamp, packet)
     assert DB is not None
-    protosel = ", ".join(["?" for _ in range(len(protos))])
+    selector = " or ".join(
+        (f"(is_incoming = ? and proto = ?)" for _ in range(len(matchlist)))
+    )
     cur = DB.cursor()
-    cur.execute(f"""select packet from events
-                    where proto in ({protosel}) and imei = ?
+    cur.execute(
+        f"""select is_incoming, tstamp, packet from events
+                    where ({selector}) and imei = ?
                     order by tstamp desc limit ?""",
-                protos + (imei, backlog))
-    result = [row[0] for row in cur]
+        tuple(item for sublist in matchlist for item in sublist)
+        + (imei, backlog),
+    )
+    result = list(cur)
     cur.close()
-    return result
+    return list(reversed(result))