def post(self, database): payload = json.loads(self.request.body.decode("utf8")) from_date = payload['from_date'] to_date = payload['to_date'] indexes = [] for ind in payload['indexes']: hypoind = HypoIndex(ind['nspname'], ind['relname'], ind['ams']) hypoind._ddl = ind['ddl'] indexes.append(hypoind) queryids = payload['queryids'] powa_conn = self.connect(database="powa") conn = self.connect(database=database) queries = list(powa_conn.execute(text(""" SELECT DISTINCT query, ps.queryid FROM powa_statements ps WHERE queryid IN :queryids """), queryids=tuple(queryids))) # Create all possible indexes for this qual hypo_version = self.has_extension("hypopg", database=database) hypoplans = {} indbyname = {} if hypo_version and hypo_version >= "0.0.3": # identify indexes # create them for ind in indexes: indname = self.execute( select(["*"]) .select_from(func.hypopg_create_index(ind.ddl)), database=database).first()[1] indbyname[indname] = ind # Build the query and fetch the plans for query in queries: querystr = get_any_sample_query(self, database, query.queryid, from_date, to_date) if querystr: try: hypoplans[query.queryid] = get_hypoplans( self.connect(database=database), querystr, indbyname.values()) except: # TODO: stop ignoring the error continue # To value of a link is the the reduction in cost self.render_json(hypoplans)
def post(self, database): payload = json.loads(self.request.body.decode("utf8")) from_date = payload['from_date'] to_date = payload['to_date'] indexes = [] for ind in payload['indexes']: hypoind = HypoIndex(ind['nspname'], ind['relname'], ind['ams']) hypoind._ddl = ind['ddl'] indexes.append(hypoind) queryids = payload['queryids'] powa_conn = self.connect(database="powa") conn = self.connect(database=database) queries = list( powa_conn.execute(text(""" SELECT DISTINCT query, ps.queryid FROM powa_statements ps WHERE queryid IN :queryids """), queryids=tuple(queryids))) # Create all possible indexes for this qual hypo_version = self.has_extension("hypopg", database=database) hypoplans = {} indbyname = {} if hypo_version and hypo_version >= "0.0.3": # identify indexes # create them for ind in indexes: indname = self.execute(select(["*"]).select_from( func.hypopg_create_index(ind.ddl)), database=database).first()[1] indbyname[indname] = ind # Build the query and fetch the plans for query in queries: querystr = get_any_sample_query(self, database, query.queryid, from_date, to_date) if querystr: try: hypoplans[query.queryid] = get_hypoplans( self.connect(database=database), querystr, indbyname.values()) except: # TODO: stop ignoring the error continue # To value of a link is the the reduction in cost self.render_json(hypoplans)
def hypo_ddl(self): ddl = self.ddl if ddl is not None: return select([column("indexname") ]).select_from(func.hypopg_create_index(self.ddl))
def post(self, srvid, database): try: # Check remote access first remote_conn = self.connect(srvid, database=database, remote_access=True) except Exception as e: raise HTTPError(501, "Could not connect to remote server: %s" % str(e)) payload = json.loads(self.request.body.decode("utf8")) from_date = payload['from_date'] to_date = payload['to_date'] indexes = [] for ind in payload['indexes']: hypoind = HypoIndex(ind['nspname'], ind['relname'], ind['ams']) hypoind._ddl = ind['ddl'] indexes.append(hypoind) queryids = payload['queryids'] powa_conn = self.connect(database="powa") queries = list( powa_conn.execute(text(""" SELECT DISTINCT query, ps.queryid FROM powa_statements ps WHERE srvid = :srvid AND queryid IN :queryids """), srvid=srvid, queryids=tuple(queryids))) # Create all possible indexes for this qual hypo_version = self.has_extension_version(srvid, "hypopg", "0.0.3", database=database) hypoplans = {} indbyname = {} inderrors = {} if hypo_version: # identify indexes # create them for ind in indexes: try: indname = remote_conn.execute( select(["*"]).select_from( func.hypopg_create_index(ind.ddl))).first()[1] indbyname[indname] = ind except DBAPIError as e: inderrors[ind.ddl] = str(e.orig) continue except Exception: # TODO handle other errors? continue # Build the query and fetch the plans for query in queries: querystr = get_any_sample_query(self, srvid, database, query.queryid, from_date, to_date) if querystr: try: hypoplans[query.queryid] = get_hypoplans( remote_conn, querystr, indbyname.values()) except Exception: # TODO: stop ignoring the error continue # To value of a link is the the reduction in cost result = {} result["plans"] = hypoplans result["inderrors"] = inderrors self.render_json(result)
def hypo_ddl(self): ddl = self.ddl if ddl is not None: return select([column("indexname")]).select_from(func.hypopg_create_index(self.ddl))