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authorMark Haines <mark.haines@matrix.org>2016-03-30 17:19:56 +0100
committerMark Haines <mark.haines@matrix.org>2016-03-30 17:19:56 +0100
commit1fbb094c6fbaab33ef8e17802e37057e83718e7e (patch)
tree602b841ceb262e658ddfb8c11a2462cbffee16f2 /synapse/storage/schema/delta
parentAdd a entry to current_state_resets table when the current state is reset (diff)
downloadsynapse-1fbb094c6fbaab33ef8e17802e37057e83718e7e.tar.xz
Add replication streams for ex outliers and current state resets
Diffstat (limited to 'synapse/storage/schema/delta')
-rw-r--r--synapse/storage/schema/delta/30/state_stream.sql38
1 files changed, 38 insertions, 0 deletions
diff --git a/synapse/storage/schema/delta/30/state_stream.sql b/synapse/storage/schema/delta/30/state_stream.sql
new file mode 100644
index 0000000000..706fe1dcf4
--- /dev/null
+++ b/synapse/storage/schema/delta/30/state_stream.sql
@@ -0,0 +1,38 @@
+/* Copyright 2016 OpenMarket Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+/**
+ * The positions in the event stream_ordering when the current_state was
+ * replaced by the state at the event.
+ */
+
+CREATE TABLE IF NOT EXISTS current_state_resets(
+    event_stream_ordering BIGINT PRIMARY KEY NOT NULL
+);
+
+/* The outlier events that have aquired a state group typically through
+ * backfill. This is tracked separately to the events table, as assigning a
+ * state group change the position of the existing event in the stream
+ * ordering.
+ * However since a stream_ordering is assigned in persist_event for the
+ * (event, state) pair, we can use that stream_ordering to identify when
+ * the new state was assigned for the event.
+ */
+CREATE TABLE IF NOT EXISTS ex_outlier_stream(
+    event_stream_ordering BIGINT PRIMARY KEY NOT NULL,
+    event_id TEXT NOT NULL,
+    state_group BIGINT NOT NULL
+);