From 2904d133f34981cbccbc6b5e615ccd9ba511ab0d Mon Sep 17 00:00:00 2001 From: rubo77 Date: Tue, 6 Nov 2018 23:16:22 +0100 Subject: [PATCH] add purge_history.sh and purge_remote_media.sh scripts to contrib/purge_api/ Signed-off-by: Ruben Barkow --- changelog.d/4155.misc | 1 + contrib/purge_api/README.md | 16 +++ contrib/purge_api/purge_history.sh | 141 ++++++++++++++++++++++++ contrib/purge_api/purge_remote_media.sh | 54 +++++++++ 4 files changed, 212 insertions(+) create mode 100644 changelog.d/4155.misc create mode 100644 contrib/purge_api/README.md create mode 100644 contrib/purge_api/purge_history.sh create mode 100644 contrib/purge_api/purge_remote_media.sh diff --git a/changelog.d/4155.misc b/changelog.d/4155.misc new file mode 100644 index 0000000000..4a7d5acb66 --- /dev/null +++ b/changelog.d/4155.misc @@ -0,0 +1 @@ +add purge_history.sh and purge_remote_media.sh scripts to contrib/ diff --git a/contrib/purge_api/README.md b/contrib/purge_api/README.md new file mode 100644 index 0000000000..000bf35ca7 --- /dev/null +++ b/contrib/purge_api/README.md @@ -0,0 +1,16 @@ +Purge history API examples +========================== + +# `purge_history.sh` + +A bash file, that uses the [purge history API](/docs/admin_api/README.rst) to +purge all messages in a list of rooms up to a certain event. You can select a +timeframe or a number of messages that you want to keep in the room. + +Just configure the variables DOMAIN, ADMIN, ROOMS_ARRAY and TIME at the top of +the script. + +# `purge_remote_media.sh` + +A bash file, that uses the [purge history API](/docs/admin_api/README.rst) to +purge all old cached remote media. diff --git a/contrib/purge_api/purge_history.sh b/contrib/purge_api/purge_history.sh new file mode 100644 index 0000000000..e7dd5d6468 --- /dev/null +++ b/contrib/purge_api/purge_history.sh @@ -0,0 +1,141 @@ +#!/bin/bash + +# this script will use the api: +# https://github.com/matrix-org/synapse/blob/master/docs/admin_api/purge_history_api.rst +# +# It will purge all messages in a list of rooms up to a cetrain event + +################################################################################################### +# define your domain and admin user +################################################################################################### +# add this user as admin in your home server: +DOMAIN=yourserver.tld +# add this user as admin in your home server: +ADMIN="@you_admin_username:$DOMAIN" + +API_URL="$DOMAIN:8008/_matrix/client/r0" + +################################################################################################### +#choose the rooms to prune old messages from (add a free comment at the end) +################################################################################################### +# the room_id's you can get e.g. from your Riot clients "View Source" button on each message +ROOMS_ARRAY=( +'!DgvjtOljKujDBrxyHk:matrix.org#riot:matrix.org' +'!QtykxKocfZaZOUrTwp:matrix.org#Matrix HQ' +) + +# ALTERNATIVELY: +# you can select all the rooms that are not encrypted and loop over the result: +# SELECT room_id FROM rooms WHERE room_id NOT IN (SELECT DISTINCT room_id FROM events WHERE type ='m.room.encrypted') +# or +# select all rooms with at least 100 members: +# SELECT q.room_id FROM (select count(*) as numberofusers, room_id FROM current_state_events WHERE type ='m.room.member' +# GROUP BY room_id) AS q LEFT JOIN room_aliases a ON q.room_id=a.room_id WHERE q.numberofusers > 100 ORDER BY numberofusers desc + +################################################################################################### +# evaluate the EVENT_ID before which should be pruned +################################################################################################### +# choose a time before which the messages should be pruned: +TIME='12 months ago' +# ALTERNATIVELY: +# a certain time: +# TIME='2016-08-31 23:59:59' + +# creates a timestamp from the given time string: +UNIX_TIMESTAMP=$(date +%s%3N --date='TZ="UTC+2" '"$TIME") + +# ALTERNATIVELY: +# prune all messages that are older than 1000 messages ago: +# LAST_MESSAGES=1000 +# SQL_GET_EVENT="SELECT event_id from events WHERE type='m.room.message' AND room_id ='$ROOM' ORDER BY received_ts DESC LIMIT 1 offset $(($LAST_MESSAGES - 1))" + +# ALTERNATIVELY: +# select the EVENT_ID manually: +#EVENT_ID='$1471814088343495zpPNI:matrix.org' # an example event from 21st of Aug 2016 by Matthew + +################################################################################################### +# make the admin user a server admin in the database with +################################################################################################### +# psql -A -t --dbname=synapse -c "UPDATE users SET admin=1 WHERE name LIKE '$ADMIN'" + +################################################################################################### +# database function +################################################################################################### +sql (){ + # for sqlite3: + #sqlite3 homeserver.db "pragma busy_timeout=20000;$1" | awk '{print $2}' + # for postgres: + psql -A -t --dbname=synapse -c "$1" | grep -v 'Pager' +} + +################################################################################################### +# get an access token +################################################################################################### +# for example externally by watching Riot in your browser's network inspector +# or internally on the server locally, use this: +TOKEN=$(sql "SELECT token FROM access_tokens WHERE user_id='$ADMIN' ORDER BY id DESC LIMIT 1") +AUTH="Authorization: Bearer $TOKEN" + +################################################################################################### +# check, if your TOKEN works. For example this works: +################################################################################################### +# $ curl --header "$AUTH" "$API_URL/rooms/$ROOM/state/m.room.power_levels" + +################################################################################################### +# finally start pruning the room: +################################################################################################### +POSTDATA='{"delete_local_events":"true"}' # this will really delete local events, so the messages in the room really disappear unless they are restored by remote federation + +for ROOM in "${ROOMS_ARRAY[@]}"; do + echo "########################################### $(date) ################# " + echo "pruning room: $ROOM ..." + ROOM=${ROOM%#*} + #set -x + echo "check for alias in db..." + # for postgres: + sql "SELECT * FROM room_aliases WHERE room_id='$ROOM'" + echo "get event..." + # for postgres: + EVENT_ID=$(sql "SELECT event_id FROM events WHERE type='m.room.message' AND received_ts<'$UNIX_TIMESTAMP' AND room_id='$ROOM' ORDER BY received_ts DESC LIMIT 1;") + if [ "$EVENT_ID" == "" ]; then + echo "no event $TIME" + else + echo "event: $EVENT_ID" + SLEEP=2 + set -x + # call purge + OUT=$(curl --header "$AUTH" -s -d $POSTDATA POST "$API_URL/admin/purge_history/$ROOM/$EVENT_ID") + PURGE_ID=$(echo "$OUT" |grep purge_id|cut -d'"' -f4 ) + if [ "$PURGE_ID" == "" ]; then + # probably the history purge is already in progress for $ROOM + : "continuing with next room" + else + while : ; do + # get status of purge and sleep longer each time if still active + sleep $SLEEP + STATUS=$(curl --header "$AUTH" -s GET "$API_URL/admin/purge_history_status/$PURGE_ID" |grep status|cut -d'"' -f4) + : "$ROOM --> Status: $STATUS" + [[ "$STATUS" == "active" ]] || break + SLEEP=$((SLEEP + 1)) + done + fi + set +x + sleep 1 + fi +done + + +################################################################################################### +# additionally +################################################################################################### +# to benefit from pruning large amounts of data, you need to call VACUUM to free the unused space. +# This can take a very long time (hours) and the client have to be stopped while you do so: +# $ synctl stop +# $ sqlite3 -line homeserver.db "vacuum;" +# $ synctl start + +# This could be set, so you don't need to prune every time after deleting some rows: +# $ sqlite3 homeserver.db "PRAGMA auto_vacuum = FULL;" +# be cautious, it could make the database somewhat slow if there are a lot of deletions + +exit diff --git a/contrib/purge_api/purge_remote_media.sh b/contrib/purge_api/purge_remote_media.sh new file mode 100644 index 0000000000..99c07c663d --- /dev/null +++ b/contrib/purge_api/purge_remote_media.sh @@ -0,0 +1,54 @@ +#!/bin/bash + +DOMAIN=yourserver.tld +# add this user as admin in your home server: +ADMIN="@you_admin_username:$DOMAIN" + +API_URL="$DOMAIN:8008/_matrix/client/r0" + +# choose a time before which the messages should be pruned: +# TIME='2016-08-31 23:59:59' +TIME='12 months ago' + +# creates a timestamp from the given time string: +UNIX_TIMESTAMP=$(date +%s%3N --date='TZ="UTC+2" '"$TIME") + + +################################################################################################### +# database function +################################################################################################### +sql (){ + # for sqlite3: + #sqlite3 homeserver.db "pragma busy_timeout=20000;$1" | awk '{print $2}' + # for postgres: + psql -A -t --dbname=synapse -c "$1" | grep -v 'Pager' +} + +############################################################################### +# make the admin user a server admin in the database with +############################################################################### +# sql "UPDATE users SET admin=1 WHERE name LIKE '$ADMIN'" + +############################################################################### +# get an access token +############################################################################### +# for example externally by watching Riot in your browser's network inspector +# or internally on the server locally, use this: +TOKEN=$(sql "SELECT token FROM access_tokens WHERE user_id='$ADMIN' ORDER BY id DESC LIMIT 1") + +############################################################################### +# check, if your TOKEN works. For example this works: +############################################################################### +# curl --header "Authorization: Bearer $TOKEN" "$API_URL/rooms/$ROOM/state/m.room.power_levels" + +############################################################################### +# optional check size before +############################################################################### +# echo calculate used storage before ... +# du -shc ../.synapse/media_store/* + +############################################################################### +# finally start pruning media: +############################################################################### +set -x # for debugging the generated string +curl --header "Authorization: Bearer $TOKEN" -v POST "$API_URL/admin/purge_media_cache/?before_ts=$UNIX_TIMESTAMP"