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Generate separate snapshots for logical databases (#13792)
* Generate separate snapshots for sqlite, postgres and common * Cleanup postgres dbs in the TRAP * Say which logical DB we're applying updates to * Run background updates on the state DB * Add new option for accepting a SCHEMA_NUMBER
This commit is contained in:
David Robertson
GitHub
parent
42d261c32f
commit
fff9b955fa
4 changed files with 140 additions and 46 deletions
1
changelog.d/13792.misc
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1
changelog.d/13792.misc
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@ -0,0 +1 @@
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Update the script which makes full schema dumps.
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@ -2,23 +2,16 @@
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#
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# This script generates SQL files for creating a brand new Synapse DB with the latest
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# schema, on both SQLite3 and Postgres.
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#
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# It does so by having Synapse generate an up-to-date SQLite DB, then running
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# synapse_port_db to convert it to Postgres. It then dumps the contents of both.
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export PGHOST="localhost"
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POSTGRES_DB_NAME="synapse_full_schema.$$"
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SQLITE_SCHEMA_FILE="schema.sql.sqlite"
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SQLITE_ROWS_FILE="rows.sql.sqlite"
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POSTGRES_SCHEMA_FILE="full.sql.postgres"
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POSTGRES_ROWS_FILE="rows.sql.postgres"
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POSTGRES_MAIN_DB_NAME="synapse_full_schema_main.$$"
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POSTGRES_COMMON_DB_NAME="synapse_full_schema_common.$$"
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POSTGRES_STATE_DB_NAME="synapse_full_schema_state.$$"
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REQUIRED_DEPS=("matrix-synapse" "psycopg2")
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usage() {
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echo
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echo "Usage: $0 -p <postgres_username> -o <path> [-c] [-n] [-h]"
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echo "Usage: $0 -p <postgres_username> -o <path> [-c] [-n <schema number>] [-h]"
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echo
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echo "-p <postgres_username>"
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echo " Username to connect to local postgres instance. The password will be requested"
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@ -27,11 +20,16 @@ usage() {
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echo " CI mode. Prints every command that the script runs."
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echo "-o <path>"
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echo " Directory to output full schema files to."
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echo "-n <schema number>"
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echo " Schema number for the new snapshot. Used to set the location of files within "
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echo " the output directory, mimicking that of synapse/storage/schemas."
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echo " Defaults to 9999."
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echo "-h"
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echo " Display this help text."
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}
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while getopts "p:co:h" opt; do
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SCHEMA_NUMBER="9999"
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while getopts "p:co:hn:" opt; do
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case $opt in
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p)
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export PGUSER=$OPTARG
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@ -48,6 +46,9 @@ while getopts "p:co:h" opt; do
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usage
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exit
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;;
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n)
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SCHEMA_NUMBER="$OPTARG"
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;;
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\?)
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echo "ERROR: Invalid option: -$OPTARG" >&2
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usage
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@ -95,12 +96,21 @@ cd "$(dirname "$0")/.."
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TMPDIR=$(mktemp -d)
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KEY_FILE=$TMPDIR/test.signing.key # default Synapse signing key path
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SQLITE_CONFIG=$TMPDIR/sqlite.conf
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SQLITE_DB=$TMPDIR/homeserver.db
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SQLITE_MAIN_DB=$TMPDIR/main.db
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SQLITE_STATE_DB=$TMPDIR/state.db
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SQLITE_COMMON_DB=$TMPDIR/common.db
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POSTGRES_CONFIG=$TMPDIR/postgres.conf
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# Ensure these files are delete on script exit
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# TODO: the trap should also drop the temp postgres DB
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trap 'rm -rf $TMPDIR' EXIT
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cleanup() {
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echo "Cleaning up temporary sqlite database and config files..."
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rm -r "$TMPDIR"
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echo "Cleaning up temporary Postgres database..."
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dropdb --if-exists "$POSTGRES_COMMON_DB_NAME"
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dropdb --if-exists "$POSTGRES_MAIN_DB_NAME"
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dropdb --if-exists "$POSTGRES_STATE_DB_NAME"
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}
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trap 'cleanup' EXIT
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cat > "$SQLITE_CONFIG" <<EOF
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server_name: "test"
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@ -110,10 +120,22 @@ macaroon_secret_key: "abcde"
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report_stats: false
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database:
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name: "sqlite3"
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args:
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database: "$SQLITE_DB"
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databases:
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common:
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name: "sqlite3"
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data_stores: []
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args:
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database: "$SQLITE_COMMON_DB"
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main:
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name: "sqlite3"
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data_stores: ["main"]
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args:
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database: "$SQLITE_MAIN_DB"
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state:
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name: "sqlite3"
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data_stores: ["state"]
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args:
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database: "$SQLITE_STATE_DB"
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# Suppress the key server warning.
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trusted_key_servers: []
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@ -127,13 +149,32 @@ macaroon_secret_key: "abcde"
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report_stats: false
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database:
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name: "psycopg2"
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args:
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user: "$PGUSER"
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host: "$PGHOST"
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password: "$PGPASSWORD"
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database: "$POSTGRES_DB_NAME"
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databases:
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common:
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name: "psycopg2"
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data_stores: []
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args:
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user: "$PGUSER"
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host: "$PGHOST"
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password: "$PGPASSWORD"
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database: "$POSTGRES_COMMON_DB_NAME"
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main:
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name: "psycopg2"
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data_stores: ["main"]
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args:
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user: "$PGUSER"
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host: "$PGHOST"
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password: "$PGPASSWORD"
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database: "$POSTGRES_MAIN_DB_NAME"
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state:
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name: "psycopg2"
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data_stores: ["state"]
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args:
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user: "$PGUSER"
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host: "$PGHOST"
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password: "$PGPASSWORD"
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database: "$POSTGRES_STATE_DB_NAME"
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# Suppress the key server warning.
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trusted_key_servers: []
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@ -148,33 +189,76 @@ echo "Running db background jobs..."
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synapse/_scripts/update_synapse_database.py --database-config "$SQLITE_CONFIG" --run-background-updates
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# Create the PostgreSQL database.
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echo "Creating postgres database..."
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createdb --lc-collate=C --lc-ctype=C --template=template0 "$POSTGRES_DB_NAME"
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echo "Creating postgres databases..."
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createdb --lc-collate=C --lc-ctype=C --template=template0 "$POSTGRES_COMMON_DB_NAME"
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createdb --lc-collate=C --lc-ctype=C --template=template0 "$POSTGRES_MAIN_DB_NAME"
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createdb --lc-collate=C --lc-ctype=C --template=template0 "$POSTGRES_STATE_DB_NAME"
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echo "Running db background jobs..."
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synapse/_scripts/update_synapse_database.py --database-config "$POSTGRES_CONFIG" --run-background-updates
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# Delete schema_version, applied_schema_deltas and applied_module_schemas tables
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# Also delete any shadow tables from fts4
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echo "Dropping unwanted db tables..."
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SQL="
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# Some common tables are created and updated by Synapse itself and do not belong in the
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# schema.
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DROP_APP_MANAGED_TABLES="
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DROP TABLE schema_version;
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DROP TABLE schema_compat_version;
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DROP TABLE applied_schema_deltas;
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DROP TABLE applied_module_schemas;
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"
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sqlite3 "$SQLITE_DB" <<< "$SQL"
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psql "$POSTGRES_DB_NAME" -w <<< "$SQL"
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# Other common tables are not created by Synapse and do belong in the schema.
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# TODO: we could derive DROP_COMMON_TABLES from the dump of the common-only DB. But
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# since there's only one table there, I haven't bothered to do so.
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DROP_COMMON_TABLES="$DROP_APP_MANAGED_TABLES
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DROP TABLE background_updates;
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"
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echo "Dumping SQLite3 schema to '$OUTPUT_DIR/$SQLITE_SCHEMA_FILE' and '$OUTPUT_DIR/$SQLITE_ROWS_FILE'..."
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sqlite3 "$SQLITE_DB" ".schema --indent" > "$OUTPUT_DIR/$SQLITE_SCHEMA_FILE"
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sqlite3 "$SQLITE_DB" ".dump --data-only --nosys" > "$OUTPUT_DIR/$SQLITE_ROWS_FILE"
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sqlite3 "$SQLITE_COMMON_DB" <<< "$DROP_APP_MANAGED_TABLES"
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sqlite3 "$SQLITE_MAIN_DB" <<< "$DROP_COMMON_TABLES"
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sqlite3 "$SQLITE_STATE_DB" <<< "$DROP_COMMON_TABLES"
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psql "$POSTGRES_COMMON_DB_NAME" -w <<< "$DROP_APP_MANAGED_TABLES"
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psql "$POSTGRES_MAIN_DB_NAME" -w <<< "$DROP_COMMON_TABLES"
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psql "$POSTGRES_STATE_DB_NAME" -w <<< "$DROP_COMMON_TABLES"
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echo "Dumping Postgres schema to '$OUTPUT_DIR/$POSTGRES_SCHEMA_FILE' and '$OUTPUT_DIR/$POSTGRES_ROWS_FILE'..."
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pg_dump --format=plain --schema-only --no-tablespaces --no-acl --no-owner "$POSTGRES_DB_NAME" | sed -e '/^$/d' -e '/^--/d' -e 's/public\.//g' -e '/^SET /d' -e '/^SELECT /d' > "$OUTPUT_DIR/$POSTGRES_SCHEMA_FILE"
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pg_dump --format=plain --data-only --inserts --no-tablespaces --no-acl --no-owner "$POSTGRES_DB_NAME" | sed -e '/^$/d' -e '/^--/d' -e 's/public\.//g' -e '/^SET /d' -e '/^SELECT /d' > "$OUTPUT_DIR/$POSTGRES_ROWS_FILE"
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# For Reasons(TM), SQLite's `.schema` also dumps out "shadow tables", the implementation
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# details behind full text search tables. Omit these from the dumps.
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echo "Cleaning up temporary Postgres database..."
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dropdb $POSTGRES_DB_NAME
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sqlite3 "$SQLITE_MAIN_DB" <<< "
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DROP TABLE event_search_content;
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DROP TABLE event_search_segments;
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DROP TABLE event_search_segdir;
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DROP TABLE event_search_docsize;
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DROP TABLE event_search_stat;
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DROP TABLE user_directory_search_content;
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DROP TABLE user_directory_search_segments;
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DROP TABLE user_directory_search_segdir;
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DROP TABLE user_directory_search_docsize;
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DROP TABLE user_directory_search_stat;
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"
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echo "Dumping SQLite3 schema..."
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mkdir -p "$OUTPUT_DIR/"{common,main,state}"/full_schema/$SCHEMA_NUMBER"
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sqlite3 "$SQLITE_COMMON_DB" ".schema --indent" > "$OUTPUT_DIR/common/full_schema/$SCHEMA_NUMBER/full.sql.sqlite"
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sqlite3 "$SQLITE_COMMON_DB" ".dump --data-only --nosys" >> "$OUTPUT_DIR/common/full_schema/$SCHEMA_NUMBER/full.sql.sqlite"
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sqlite3 "$SQLITE_MAIN_DB" ".schema --indent" > "$OUTPUT_DIR/main/full_schema/$SCHEMA_NUMBER/full.sql.sqlite"
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sqlite3 "$SQLITE_MAIN_DB" ".dump --data-only --nosys" >> "$OUTPUT_DIR/main/full_schema/$SCHEMA_NUMBER/full.sql.sqlite"
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sqlite3 "$SQLITE_STATE_DB" ".schema --indent" > "$OUTPUT_DIR/state/full_schema/$SCHEMA_NUMBER/full.sql.sqlite"
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sqlite3 "$SQLITE_STATE_DB" ".dump --data-only --nosys" >> "$OUTPUT_DIR/state/full_schema/$SCHEMA_NUMBER/full.sql.sqlite"
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cleanup_pg_schema() {
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sed -e '/^$/d' -e '/^--/d' -e 's/public\.//g' -e '/^SET /d' -e '/^SELECT /d'
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}
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echo "Dumping Postgres schema..."
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pg_dump --format=plain --schema-only --no-tablespaces --no-acl --no-owner "$POSTGRES_COMMON_DB_NAME" | cleanup_pg_schema > "$OUTPUT_DIR/common/full_schema/$SCHEMA_NUMBER/full.sql.postgres"
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pg_dump --format=plain --data-only --inserts --no-tablespaces --no-acl --no-owner "$POSTGRES_COMMON_DB_NAME" | cleanup_pg_schema >> "$OUTPUT_DIR/common/full_schema/$SCHEMA_NUMBER/full.sql.postgres"
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pg_dump --format=plain --schema-only --no-tablespaces --no-acl --no-owner "$POSTGRES_MAIN_DB_NAME" | cleanup_pg_schema > "$OUTPUT_DIR/main/full_schema/$SCHEMA_NUMBER/full.sql.postgres"
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pg_dump --format=plain --data-only --inserts --no-tablespaces --no-acl --no-owner "$POSTGRES_MAIN_DB_NAME" | cleanup_pg_schema >> "$OUTPUT_DIR/main/full_schema/$SCHEMA_NUMBER/full.sql.postgres"
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pg_dump --format=plain --schema-only --no-tablespaces --no-acl --no-owner "$POSTGRES_STATE_DB_NAME" | cleanup_pg_schema > "$OUTPUT_DIR/state/full_schema/$SCHEMA_NUMBER/full.sql.postgres"
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pg_dump --format=plain --data-only --inserts --no-tablespaces --no-acl --no-owner "$POSTGRES_STATE_DB_NAME" | cleanup_pg_schema >> "$OUTPUT_DIR/state/full_schema/$SCHEMA_NUMBER/full.sql.postgres"
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echo "Done! Files dumped to: $OUTPUT_DIR"
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@ -48,10 +48,13 @@ class MockHomeserver(HomeServer):
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def run_background_updates(hs: HomeServer) -> None:
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store = hs.get_datastores().main
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main = hs.get_datastores().main
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state = hs.get_datastores().state
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async def run_background_updates() -> None:
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await store.db_pool.updates.run_background_updates(sleep=False)
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await main.db_pool.updates.run_background_updates(sleep=False)
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if state:
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await state.db_pool.updates.run_background_updates(sleep=False)
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# Stop the reactor to exit the script once every background update is run.
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reactor.stop()
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@ -97,8 +100,11 @@ def main() -> None:
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# Load, process and sanity-check the config.
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hs_config = yaml.safe_load(args.database_config)
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if "database" not in hs_config:
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sys.stderr.write("The configuration file must have a 'database' section.\n")
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if "database" not in hs_config and "databases" not in hs_config:
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sys.stderr.write(
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"The configuration file must have a 'database' or 'databases' section. "
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"See https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#database"
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)
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sys.exit(4)
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config = HomeServerConfig()
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@ -285,7 +285,10 @@ class BackgroundUpdater:
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back_to_back_failures = 0
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try:
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logger.info("Starting background schema updates")
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logger.info(
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"Starting background schema updates for database %s",
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self._database_name,
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)
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while self.enabled:
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try:
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result = await self.do_next_background_update(sleep)
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