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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2މ$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙimport agent_util import csv import os import sys if sys.version[0] == "3": from io import StringIO else: from StringIO import StringIO from agent_util import float textkey_mapping = {} def get_cmd_location(config): program_location = "" if "cassandra_installed_location" in config: cassandra_installed_location = config["cassandra_installed_location"] program_location = os.path.join(cassandra_installed_location, "bin") cmd = os.path.join(program_location, "nodetool") if not os.path.isfile(cmd): cmd = agent_util.which("nodetool") else: cmd = agent_util.which("nodetool", exc=True) return cmd def name_to_textkey(name): textkey = name.strip() textkey = textkey.replace(" ", "_") textkey = textkey.replace("(", "").replace(")", "") textkey_mapping[textkey] = name return textkey def get_cfstats(config, keyspace=None, table=None): cmd = get_cmd_location(config) cmd += " cfstats" if keyspace and table: cmd += " %s.%s" % (keyspace, table) status, output = agent_util.execute_command(cmd) if status != 0: raise Exception(output) lines = output.split("\n") data = {} current_keyspace = None current_table = None for line in lines: if line.startswith("Keyspace:"): current_keyspace = line.strip().split()[-1] current_table = None data[current_keyspace] = {} data[current_keyspace]["tables"] = {} continue if line.strip().startswith("Table:"): current_table = line.strip().split()[-1] data[current_keyspace]["tables"][current_table] = {} continue # Skip empty lines and "-------" divider lines if not line.strip(): continue if not line.replace("-", "").strip(): continue # Get the key/value pair on the line, get rid of "ms" and convert to a float. Use # try/except to convert NaN to None fields = line.strip().split(":") key = fields[0] value = fields[1] key = name_to_textkey(key) value = value.strip() value = value.replace("ms", "").strip() try: if value.lower() == "nan": raise Exception() value = float(value) except: value = None if current_table: data[current_keyspace]["tables"][current_table][key] = value else: data[current_keyspace][key] = value return data def get_cfhistograms(config, keyspace, table): cmd = get_cmd_location(config) cmd += " cfhistograms -- %s %s" % (keyspace, table) status, output = agent_util.execute_command(cmd) if status != 0: raise Exception(output) lines = output.split("\n") output = agent_util.StringIO(output) parsed_output = list(csv.reader(output, delimiter="\t")) indices = [i for i, x in enumerate(parsed_output) if x == []] cfhistograms_dict = dict( (parsed_output[i - 2][0], parsed_output[i - 1][0]) for i in indices if i - 2 >= 0 ) return cfhistograms_dict def get_tpstats(config): cmd = get_cmd_location(config) status, output = agent_util.execute_command(cmd + " tpstats") if status != 0: raise Exception(output) output = agent_util.StringIO(output) parsed_output = list(csv.reader(output, delimiter="\t")) header_line = [x.strip() for x in parsed_output[0][0].split(" ") if x] pool_tasks = [] dropped_message = [] header = [] for values in parsed_output[1:]: if values: v = [x.strip() for x in values[0].split(" ") if x] if len(v) == 2: if not header: header = [x.strip() for x in values[0].split(" ") if x] else: dropped_message.append(dict(zip(header, v))) else: pool_tasks.append(dict(zip(header_line, v))) return pool_tasks, dropped_message class CassandraPlugin(agent_util.Plugin): textkey = "cassandra" label = "Cassandra" @classmethod def get_metadata(self, config): status = agent_util.SUPPORTED msg = None program_location = "" if "cassandra_installed_location" in config: cassandra_installed_location = config["cassandra_installed_location"] program_location = os.path.join(cassandra_installed_location, "bin") # check if cassandra is even installed installed = agent_util.which("cassandra") if not installed: self.log.info("cassandra binary not found") status = agent_util.UNSUPPORTED msg = "cassandra binary not found" return {} tables = [] keyspaces = [] pool_tasks = [] dropped_message = [] if status is agent_util.SUPPORTED: try: cfstats = get_cfstats(config) keyspaces = cfstats.keys() for keyspace in cfstats: for table in cfstats[keyspace]["tables"]: tables.append(keyspace + "." + table) pool_tasks, dropped_message = get_tpstats(config) pool_tasks = [p["Pool Name"] for p in pool_tasks] dropped_message = [m["Message type"] for m in dropped_message] except: status = agent_util.MISCONFIGURED self.log.error("couldn't get cassandra stats") msg = "Couldn't get Cassandra stats, make sure cassandra is installed and cassandra configuration file is valid." tables.sort() keyspaces.sort() metadata = {} # Add keyspace-level metrics keyspace = keyspaces[0] for key in cfstats[keyspace]: if key != "tables": metadata[key] = { "label": textkey_mapping[key], "options": keyspaces, "status": status, "error_message": msg, } # Add table-level metrics table = cfstats[keyspace]["tables"].keys()[0] for key in cfstats[keyspace]["tables"][table].keys(): metadata[key] = { "label": textkey_mapping[key], "options": tables, "status": status, "error_message": msg, } """ metadata = { "thread_pool_task.active": { "label": "Thread pool task: active", "options": pool_tasks, "status": status, "error_message": msg }, "thread_pool_task.completed": { "label": "Thread pool task: completed", "options": pool_tasks, "status": status, "error_message": msg }, "thread_pool_task.blocked": { "label": "Thread pool task: blocked", "options": pool_tasks, "status": status, "error_message": msg }, "thread_pool_task.pending": { "label": "Thread pool task: pending", "options": pool_tasks, "status": status, "error_message": msg }, "dropped_messages": { "label": "Dropped Messages", "options": dropped_message, "status": status, "error_message": msg }, } """ return metadata def check(self, textkey, data, config): res = 0 if data: table = "" if len(data.split(".")) == 2: keyspace, table = data.split(".") else: keyspace = data if textkey in ["column_count", "row_size", "row_count"]: cfhistograms_dict = get_cfhistograms(config, keyspace, table) res = cfhistograms_dict[mapping[textkey]] if textkey == "column_count": try: res = res.split(" cells")[0] except: res = 0 else: if textkey == "row_size": try: res = res.split(" bytes: ")[0] except: res = 0 else: try: res = res.split(" bytes: ")[1] except: res = 0 elif "thread_pool_task" in textkey or textkey == "dropped_messages": pool_tasks, dropped_message = get_tpstats(config) if "thread_pool_task" in textkey: for p in pool_tasks: if p["Pool Name"] == data: res = p[textkey.split(".")[-1].title()] break else: for p in dropped_message: if p["Message type"] == data: res = p["Dropped"] break else: cfstats = get_cfstats(config, keyspace=keyspace, table=table) if keyspace in cfstats: if table: return cfstats[keyspace]["tables"][table].get(textkey) else: return cfstats[keyspace].get(textkey) # Shouldn't get here return None