/usr/share/postgresql/9.6/extension/mimeo--0.8.1--0.8.2.sql is in postgresql-9.6-mimeo 1.4.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 | -- Moved index creation step after data insertion. This will apply to all maker functions as well.
/*
* Snap refresh to repull all table data
*/
CREATE OR REPLACE FUNCTION refresh_snap(p_destination text, p_index boolean DEFAULT true, p_debug boolean DEFAULT false, p_pulldata boolean DEFAULT true) RETURNS void
LANGUAGE plpgsql SECURITY DEFINER
AS $$
DECLARE
v_adv_lock boolean;
v_cols_n_types text;
v_cols text;
v_condition text;
v_create_sql text;
v_dblink_schema text;
v_dblink int;
v_dest_table text;
v_exists int;
v_filter text[];
v_insert_sql text;
v_job_id int;
v_jobmon_schema text;
v_job_name text;
v_lcols_array text[];
v_local_sql text;
v_l text;
v_match boolean := 'f';
v_old_search_path text;
v_parts record;
v_post_script text[];
v_rcols_array text[];
v_refresh_snap text;
v_remote_index_sql text;
v_remote_sql text;
v_row record;
v_rowcount bigint;
v_r text;
v_snap text;
v_source_table text;
v_step_id int;
v_table_exists int;
v_view_definition text;
BEGIN
IF p_debug IS DISTINCT FROM true THEN
PERFORM set_config( 'client_min_messages', 'notice', true );
END IF;
v_job_name := 'Refresh Snap: '||p_destination;
SELECT nspname INTO v_dblink_schema FROM pg_namespace n, pg_extension e WHERE e.extname = 'dblink' AND e.extnamespace = n.oid;
SELECT nspname INTO v_jobmon_schema FROM pg_namespace n, pg_extension e WHERE e.extname = 'pg_jobmon' AND e.extnamespace = n.oid;
-- Set custom search path to allow easier calls to other functions, especially job logging
SELECT current_setting('search_path') INTO v_old_search_path;
EXECUTE 'SELECT set_config(''search_path'',''@extschema@,'||v_jobmon_schema||','||v_dblink_schema||',public'',''false'')';
v_job_id := add_job(v_job_name);
PERFORM gdb(p_debug,'Job ID: '||v_job_id::text);
-- Take advisory lock to prevent multiple calls to function overlapping and causing possible deadlock
v_adv_lock := pg_try_advisory_lock(hashtext('refresh_snap'), hashtext(v_job_name));
IF v_adv_lock = 'false' THEN
v_step_id := add_step(v_job_id,'Obtaining advisory lock for job: '||v_job_name);
PERFORM gdb(p_debug,'Obtaining advisory lock FAILED for job: '||v_job_name);
PERFORM update_step(v_step_id, 'OK','Found concurrent job. Exiting gracefully');
PERFORM close_job(v_job_id);
EXECUTE 'SELECT set_config(''search_path'','''||v_old_search_path||''',''false'')';
RETURN;
END IF;
v_step_id := add_step(v_job_id,'Grabbing Mapping, Building SQL');
SELECT source_table
, dest_table
, dblink
, filter
, condition
, post_script
INTO v_source_table
, v_dest_table
, v_dblink
, v_filter
, v_condition
, v_post_script
FROM refresh_config_snap
WHERE dest_table = p_destination;
IF NOT FOUND THEN
RAISE EXCEPTION 'ERROR: This table is not set up for snapshot replication: %',v_job_name;
END IF;
-- checking for current view
SELECT definition INTO v_view_definition FROM pg_views where
((schemaname || '.') || viewname)=v_dest_table;
v_exists := strpos(v_view_definition, 'snap1');
IF v_exists > 0 THEN
v_snap := '_snap2';
ELSE
v_snap := '_snap1';
END IF;
v_refresh_snap := v_dest_table||v_snap;
PERFORM gdb(p_debug,'v_refresh_snap: '||v_refresh_snap::text);
PERFORM dblink_connect('mimeo_refresh_snap', @extschema@.auth(v_dblink));
v_remote_sql := 'SELECT array_to_string(array_agg(attname),'','') as cols, array_to_string(array_agg(attname||'' ''||format_type(atttypid, atttypmod)::text),'','') as cols_n_types FROM pg_attribute WHERE attrelid = '||quote_literal(v_source_table)||'::regclass AND attnum > 0 AND attisdropped is false';
-- Apply column filters if used
IF v_filter IS NOT NULL THEN
v_remote_sql := v_remote_sql || ' AND ARRAY[attname::text] <@ '||quote_literal(v_filter);
END IF;
v_remote_sql := 'SELECT cols, cols_n_types FROM dblink(''mimeo_refresh_snap'', ' || quote_literal(v_remote_sql) || ') t (cols text, cols_n_types text)';
perform gdb(p_debug,'v_remote_sql: '||v_remote_sql);
EXECUTE v_remote_sql INTO v_cols, v_cols_n_types;
perform gdb(p_debug,'v_cols: '||v_cols);
perform gdb(p_debug,'v_cols_n_types: '||v_cols_n_types);
v_remote_sql := 'SELECT '||v_cols||' FROM '||v_source_table;
-- Used by p_pull options in all maker functions to be able to create a replication job but pull no data
IF p_pulldata = false THEN
v_remote_sql := v_remote_sql || ' LIMIT 0';
ELSIF v_condition IS NOT NULL THEN
v_remote_sql := v_remote_sql || ' ' || v_condition;
END IF;
v_insert_sql := 'INSERT INTO ' || v_refresh_snap || ' SELECT '||v_cols||' FROM dblink(''mimeo_refresh_snap'','||quote_literal(v_remote_sql)||') t ('||v_cols_n_types||')';
PERFORM update_step(v_step_id, 'OK','Done');
v_step_id := add_step(v_job_id,'Truncate non-active snap table');
-- Create snap table if it doesn't exist
SELECT string_to_array(v_refresh_snap, '.') AS oparts INTO v_parts;
SELECT INTO v_table_exists count(1) FROM pg_tables
WHERE schemaname = v_parts.oparts[1] AND
tablename = v_parts.oparts[2];
IF v_table_exists = 0 THEN
PERFORM gdb(p_debug,'Snap table does not exist. Creating... ');
v_create_sql := 'CREATE TABLE ' || v_refresh_snap || ' (' || v_cols_n_types || ')';
perform gdb(p_debug,'v_create_sql: '||v_create_sql::text);
EXECUTE v_create_sql;
ELSE
/* Check local column definitions against remote and recreate table if different. Allows automatic recreation of
snap tables if columns change (add, drop type change) */
v_local_sql := 'SELECT array_agg(attname||'' ''||format_type(atttypid, atttypmod)::text) as cols_n_types FROM pg_attribute WHERE attnum > 0 AND attisdropped is false AND attrelid = ' || quote_literal(v_refresh_snap) || '::regclass';
PERFORM gdb(p_debug,'v_local_sql: '||v_local_sql::text);
EXECUTE v_local_sql INTO v_lcols_array;
SELECT string_to_array(v_cols_n_types, ',') AS cols INTO v_rcols_array;
-- Check to see if there's a change in the column structure on the remote
FOREACH v_r IN ARRAY v_rcols_array LOOP
v_match := 'f';
FOREACH v_l IN ARRAY v_lcols_array LOOP
IF v_r = v_l THEN
v_match := 't';
EXIT;
END IF;
END LOOP;
END LOOP;
IF v_match = 'f' THEN
EXECUTE 'DROP TABLE ' || v_refresh_snap;
EXECUTE 'DROP VIEW ' || v_dest_table;
v_create_sql := 'CREATE TABLE ' || v_refresh_snap || ' (' || v_cols_n_types || ')';
PERFORM gdb(p_debug,'v_create_sql: '||v_create_sql::text);
EXECUTE v_create_sql;
v_step_id := add_step(v_job_id,'Source table structure changed.');
PERFORM update_step(v_step_id, 'OK','Tables and view dropped and recreated. Please double-check snap table attributes (permissions, indexes, etc');
PERFORM gdb(p_debug,'Source table structure changed. Tables and view dropped and recreated. Please double-check snap table attributes (permissions, indexes, etc)');
END IF;
-- truncate non-active snap table
EXECUTE 'TRUNCATE TABLE ' || v_refresh_snap;
PERFORM update_step(v_step_id, 'OK','Done');
END IF;
-- populating snap table
v_step_id := add_step(v_job_id,'Inserting records into local table');
PERFORM gdb(p_debug,'Inserting rows... '||v_insert_sql);
EXECUTE v_insert_sql;
GET DIAGNOSTICS v_rowcount = ROW_COUNT;
PERFORM update_step(v_step_id, 'OK','Inserted '||v_rowcount||' records');
-- Create indexes if new table was created
IF (v_table_exists = 0 OR v_match = 'f') AND p_index = true THEN
v_remote_index_sql := 'SELECT
CASE
WHEN i.indisprimary IS true THEN ''primary''
WHEN i.indisunique IS true THEN ''unique''
ELSE ''index''
END AS key_type,
( SELECT array_agg( a.attname ORDER by x.r )
FROM pg_attribute a
JOIN ( SELECT k, row_number() over () as r
FROM unnest(i.indkey) k ) as x
ON a.attnum = x.k AND a.attrelid = i.indrelid ';
IF v_filter IS NOT NULL THEN
v_remote_index_sql := v_remote_index_sql || ' WHERE ARRAY[a.attname::text] <@ '||quote_literal(v_filter);
END IF;
v_remote_index_sql := v_remote_index_sql || ') AS indkey_names
FROM pg_index i
WHERE i.indrelid = '||quote_literal(v_source_table)||'::regclass';
FOR v_row IN EXECUTE 'SELECT key_type, indkey_names FROM dblink(''mimeo_refresh_snap'', '||quote_literal(v_remote_index_sql)||') t (key_type text, indkey_names text[])' LOOP
IF v_row.indkey_names IS NOT NULL THEN -- If column filter is used, indkey_name column may be null
IF v_row.key_type = 'primary' THEN
RAISE NOTICE 'Creating primary key...';
EXECUTE 'ALTER TABLE '||v_refresh_snap||' ADD CONSTRAINT '||v_parts.oparts[2]||'_'||array_to_string(v_row.indkey_names, '_')||'_idx PRIMARY KEY ('||array_to_string(v_row.indkey_names, ',')||')';
ELSIF v_row.key_type = 'unique' THEN
RAISE NOTICE 'Creating unique index...';
EXECUTE 'CREATE UNIQUE INDEX '||v_parts.oparts[2]||'_'||array_to_string(v_row.indkey_names, '_')||'_idx ON '||v_refresh_snap|| '('||array_to_string(v_row.indkey_names, ',')||')';
ELSE
RAISE NOTICE 'Creating index...';
EXECUTE 'CREATE INDEX '||v_parts.oparts[2]||'_'||array_to_string(v_row.indkey_names, '_')||'_idx ON '||v_refresh_snap|| '('||array_to_string(v_row.indkey_names, ',')||')';
END IF;
END IF;
END LOOP;
END IF;
IF v_rowcount IS NOT NULL THEN
EXECUTE 'ANALYZE ' ||v_refresh_snap;
--SET statement_timeout='30 min';
-- swap view
v_step_id := add_step(v_job_id,'Swap view to '||v_refresh_snap);
PERFORM gdb(p_debug,'Swapping view to '||v_refresh_snap);
EXECUTE 'CREATE OR REPLACE VIEW '||v_dest_table||' AS SELECT * FROM '||v_refresh_snap;
PERFORM update_step(v_step_id, 'OK','View Swapped');
v_step_id := add_step(v_job_id,'Updating last value');
UPDATE refresh_config_snap set last_run = CURRENT_TIMESTAMP WHERE dest_table = p_destination;
PERFORM update_step(v_step_id, 'OK','Done');
-- Runs special sql to fix indexes, permissions, etc on recreated objects
IF v_match = 'f' AND v_post_script IS NOT NULL THEN
v_step_id := add_step(v_job_id,'Applying post_script sql commands due to schema change');
PERFORM @extschema@.post_script(v_dest_table);
PERFORM update_step(v_step_id, 'OK','Done');
END IF;
PERFORM close_job(v_job_id);
ELSE
RAISE EXCEPTION 'No rows found in source table';
END IF;
PERFORM dblink_disconnect('mimeo_refresh_snap');
-- Ensure old search path is reset for the current session
EXECUTE 'SELECT set_config(''search_path'','''||v_old_search_path||''',''false'')';
PERFORM pg_advisory_unlock(hashtext('refresh_snap'), hashtext(v_job_name));
EXCEPTION
WHEN QUERY_CANCELED THEN
EXECUTE 'SELECT set_config(''search_path'',''@extschema@,'||v_jobmon_schema||','||v_dblink_schema||''',''false'')';
IF dblink_get_connections() @> '{mimeo_refresh_snap}' THEN
PERFORM dblink_disconnect('mimeo_refresh_snap');
END IF;
EXECUTE 'SELECT set_config(''search_path'','''||v_old_search_path||''',''false'')';
PERFORM pg_advisory_unlock(hashtext('refresh_snap'), hashtext(v_job_name));
RAISE EXCEPTION '%', SQLERRM;
WHEN OTHERS THEN
EXECUTE 'SELECT set_config(''search_path'',''@extschema@,'||v_jobmon_schema||','||v_dblink_schema||''',''false'')';
IF v_job_id IS NULL THEN
v_job_id := add_job('Refresh Snap: '||p_destination);
v_step_id := add_step(v_job_id, 'EXCEPTION before job logging started');
END IF;
IF v_step_id IS NULL THEN
v_step_id := jobmon.add_step(v_job_id, 'EXCEPTION before first step logged');
END IF;
PERFORM update_step(v_step_id, 'BAD', 'ERROR: '||coalesce(SQLERRM,'unknown'));
PERFORM fail_job(v_job_id);
IF dblink_get_connections() @> '{mimeo_refresh_snap}' THEN
PERFORM dblink_disconnect('mimeo_refresh_snap');
END IF;
EXECUTE 'SELECT set_config(''search_path'','''||v_old_search_path||''',''false'')';
PERFORM pg_advisory_unlock(hashtext('refresh_snap'), hashtext(v_job_name));
RAISE EXCEPTION '%', SQLERRM;
END
$$;
|