diff options
Diffstat (limited to 'synapse/metrics/__init__.py')
| -rw-r--r-- | synapse/metrics/__init__.py | 182 |
1 files changed, 63 insertions, 119 deletions
diff --git a/synapse/metrics/__init__.py b/synapse/metrics/__init__.py index e3b831db67..973ba6506f 100644 --- a/synapse/metrics/__init__.py +++ b/synapse/metrics/__init__.py @@ -18,14 +18,13 @@ import functools import time import gc import platform +import attr -from twisted.internet import reactor +from prometheus_client import Gauge, Histogram, Counter +from prometheus_client.core import ( + GaugeMetricFamily, CounterMetricFamily, REGISTRY) -from .metric import ( - CounterMetric, CallbackMetric, DistributionMetric, CacheMetric, - MemoryUsageMetric, GaugeMetric, -) -from .process_collector import register_process_collector +from twisted.internet import reactor logger = logging.getLogger(__name__) @@ -34,149 +33,94 @@ logger = logging.getLogger(__name__) running_on_pypy = platform.python_implementation() == 'PyPy' all_metrics = [] all_collectors = [] +all_gauges = {} +@attr.s(hash=True) +class LaterGauge(object): -class Metrics(object): - """ A single Metrics object gives a (mutable) slice view of the all_metrics - dict, allowing callers to easily register new metrics that are namespaced - nicely.""" - - def __init__(self, name): - self.name_prefix = name - - def make_subspace(self, name): - return Metrics("%s_%s" % (self.name_prefix, name)) - - def register_collector(self, func): - all_collectors.append(func) - - def _register(self, metric_class, name, *args, **kwargs): - full_name = "%s_%s" % (self.name_prefix, name) - - metric = metric_class(full_name, *args, **kwargs) - - all_metrics.append(metric) - return metric - - def register_counter(self, *args, **kwargs): - """ - Returns: - CounterMetric - """ - return self._register(CounterMetric, *args, **kwargs) - - def register_gauge(self, *args, **kwargs): - """ - Returns: - GaugeMetric - """ - return self._register(GaugeMetric, *args, **kwargs) + name = attr.ib() + desc = attr.ib() + labels = attr.ib(hash=False) + caller = attr.ib() - def register_callback(self, *args, **kwargs): - """ - Returns: - CallbackMetric - """ - return self._register(CallbackMetric, *args, **kwargs) + def collect(self): - def register_distribution(self, *args, **kwargs): - """ - Returns: - DistributionMetric - """ - return self._register(DistributionMetric, *args, **kwargs) - - def register_cache(self, *args, **kwargs): - """ - Returns: - CacheMetric - """ - return self._register(CacheMetric, *args, **kwargs) + g = GaugeMetricFamily(self.name, self.desc, self.labels) + try: + calls = self.caller() + except Exception as e: + print(e) + logger.err() + yield g -def register_memory_metrics(hs): - try: - import psutil - process = psutil.Process() - process.memory_info().rss - except (ImportError, AttributeError): - logger.warn( - "psutil is not installed or incorrect version." - " Disabling memory metrics." - ) - return - metric = MemoryUsageMetric(hs, psutil) - all_metrics.append(metric) + if isinstance(calls, dict): + for k, v in calls.items(): + g.add_metric(k, v) + else: + g.add_metric([], calls) + yield g -def get_metrics_for(pkg_name): - """ Returns a Metrics instance for conveniently creating metrics - namespaced with the given name prefix. """ + def register(self): + if self.name in all_gauges.keys(): + REGISTRY.unregister(all_gauges.pop(self.name)) - # Convert a "package.name" to "package_name" because Prometheus doesn't - # let us use . in metric names - return Metrics(pkg_name.replace(".", "_")) + REGISTRY.register(self) + all_gauges[self.name] = self -def render_all(): - strs = [] +# +# Python GC metrics +# - for collector in all_collectors: - collector() +gc_unreachable = Gauge("python_gc_unreachable_total", "Unreachable GC objects", ["gen"]) +gc_time = Histogram("python_gc_time", "Time taken to GC (ms)", ["gen"], buckets=[1, 2, 5, 10, 25, 50, 100, 250, 500, 1000]) - for metric in all_metrics: - try: - strs += metric.render() - except Exception: - strs += ["# FAILED to render"] - logger.exception("Failed to render metric") +class GCCounts(object): + def collect(self): + gc_counts = gc.get_count() - strs.append("") # to generate a final CRLF + cm = GaugeMetricFamily("python_gc_counts", "GC cycle counts", labels=["gen"]) + for n, m in enumerate(gc.get_count()): + cm.add_metric([str(n)], m) - return "\n".join(strs) + yield cm +REGISTRY.register(GCCounts()) -register_process_collector(get_metrics_for("process")) +# +# Twisted reactor metrics +# +tick_time = Histogram("python_twisted_reactor_tick_time", "Tick time of the Twisted reactor (ms)", buckets=[1, 2, 5, 10, 50, 100, 250, 500, 1000, 2000]) +pending_calls_metric = Histogram("python_twisted_reactor_pending_calls", "Pending calls", buckets=[1, 2, 5, 10, 25, 50, 100, 250, 500, 1000]) -python_metrics = get_metrics_for("python") +# +# Federation Metrics +# -gc_time = python_metrics.register_distribution("gc_time", labels=["gen"]) -gc_unreachable = python_metrics.register_counter("gc_unreachable_total", labels=["gen"]) -python_metrics.register_callback( - "gc_counts", lambda: {(i,): v for i, v in enumerate(gc.get_count())}, labels=["gen"] -) +sent_edus_counter = Counter("synapse_federation_client_sent_edus", "") -reactor_metrics = get_metrics_for("python.twisted.reactor") -tick_time = reactor_metrics.register_distribution("tick_time") -pending_calls_metric = reactor_metrics.register_distribution("pending_calls") +sent_transactions_counter = Counter("synapse_federation_client_sent_transactions", "") -synapse_metrics = get_metrics_for("synapse") +events_processed_counter = Counter("synapse_federation_client_events_processed", "") # Used to track where various components have processed in the event stream, # e.g. federation sending, appservice sending, etc. -event_processing_positions = synapse_metrics.register_gauge( - "event_processing_positions", labels=["name"], -) +event_processing_positions = Gauge("synapse_event_processing_positions", "", ["name"]) # Used to track the current max events stream position -event_persisted_position = synapse_metrics.register_gauge( - "event_persisted_position", -) +event_persisted_position = Gauge("synapse_event_persisted_position", "") # Used to track the received_ts of the last event processed by various # components -event_processing_last_ts = synapse_metrics.register_gauge( - "event_processing_last_ts", labels=["name"], -) +event_processing_last_ts = Gauge("synapse_event_processing_last_ts", "", ["name"]) # Used to track the lag processing events. This is the time difference # between the last processed event's received_ts and the time it was # finished being processed. -event_processing_lag = synapse_metrics.register_gauge( - "event_processing_lag", labels=["name"], -) - +event_processing_lag = Gauge("synapse_event_processing_lag", "", ["name"]) def runUntilCurrentTimer(func): @@ -206,8 +150,8 @@ def runUntilCurrentTimer(func): # since about 25% of time is actually spent running things triggered by # I/O events, but that is harder to capture without rewriting half the # reactor. - tick_time.inc_by(end - start) - pending_calls_metric.inc_by(num_pending) + tick_time.observe(end - start) + pending_calls_metric.observe(num_pending) if running_on_pypy: return ret @@ -224,8 +168,8 @@ def runUntilCurrentTimer(func): unreachable = gc.collect(i) end = time.time() * 1000 - gc_time.inc_by(end - start, i) - gc_unreachable.inc_by(unreachable, i) + gc_time.labels(i).observe(end - start) + gc_unreachable.labels(i).set(unreachable) return ret |