synapse-product/synapse/config/metrics.py

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# Copyright 2015, 2016 OpenMarket Ltd
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# Copyright 2019 The Matrix.org Foundation C.I.C.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import Any, Optional
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import attr
from synapse.types import JsonDict
from synapse.util.check_dependencies import check_requirements
from ._base import Config, ConfigError
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@attr.s
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class MetricsFlags:
known_servers: bool = attr.ib(
default=False, validator=attr.validators.instance_of(bool)
)
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@classmethod
def all_off(cls) -> "MetricsFlags":
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"""
Instantiate the flags with all options set to off.
"""
return cls(**{x.name: False for x in attr.fields(cls)})
class MetricsConfig(Config):
section = "metrics"
def read_config(self, config: JsonDict, **kwargs: Any) -> None:
self.enable_metrics = config.get("enable_metrics", False)
"""
### `enable_legacy_metrics` (experimental)
**Experimental: this option may be removed or have its behaviour
changed at any time, with no notice.**
Set to `true` to publish both legacy and non-legacy Prometheus metric names,
or to `false` to only publish non-legacy Prometheus metric names.
Defaults to `true`. Has no effect if `enable_metrics` is `false`.
Legacy metric names include:
- metrics containing colons in the name, such as `synapse_util_caches_response_cache:hits`, because colons are supposed to be reserved for user-defined recording rules;
- counters that don't end with the `_total` suffix, such as `synapse_federation_client_sent_edus`, therefore not adhering to the OpenMetrics standard.
These legacy metric names are unconventional and not compliant with OpenMetrics standards.
They are included for backwards compatibility.
Example configuration:
```yaml
enable_legacy_metrics: false
```
See https://github.com/matrix-org/synapse/issues/11106 for context.
*Since v1.67.0.*
"""
self.enable_legacy_metrics = config.get("enable_legacy_metrics", True)
self.report_stats = config.get("report_stats", None)
self.report_stats_endpoint = config.get(
"report_stats_endpoint", "https://matrix.org/report-usage-stats/push"
)
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self.metrics_port = config.get("metrics_port")
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self.metrics_bind_host = config.get("metrics_bind_host", "127.0.0.1")
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if self.enable_metrics:
_metrics_config = config.get("metrics_flags") or {}
self.metrics_flags = MetricsFlags(**_metrics_config)
else:
self.metrics_flags = MetricsFlags.all_off()
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self.sentry_enabled = "sentry" in config
if self.sentry_enabled:
check_requirements("sentry")
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self.sentry_dsn = config["sentry"].get("dsn")
if not self.sentry_dsn:
raise ConfigError(
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"sentry.dsn field is required when sentry integration is enabled"
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)
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def generate_config_section(
self, report_stats: Optional[bool] = None, **kwargs: Any
) -> str:
if report_stats is not None:
res = "report_stats: %s\n" % ("true" if report_stats else "false")
else:
res = "\n"
return res