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# Copyright The OpenTelemetry Authors
#
# 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 Final
from opentelemetry.metrics import Counter, Histogram, Meter
FAAS_COLDSTARTS: Final = "faas.coldstarts"
"""
Number of invocation cold starts
Instrument: counter
Unit: {coldstart}
"""
def create_faas_coldstarts(meter: Meter) -> Counter:
"""Number of invocation cold starts"""
return meter.create_counter(
name=FAAS_COLDSTARTS,
description="Number of invocation cold starts",
unit="{coldstart}",
)
FAAS_CPU_USAGE: Final = "faas.cpu_usage"
"""
Distribution of CPU usage per invocation
Instrument: histogram
Unit: s
"""
def create_faas_cpu_usage(meter: Meter) -> Histogram:
"""Distribution of CPU usage per invocation"""
return meter.create_histogram(
name=FAAS_CPU_USAGE,
description="Distribution of CPU usage per invocation",
unit="s",
)
FAAS_ERRORS: Final = "faas.errors"
"""
Number of invocation errors
Instrument: counter
Unit: {error}
"""
def create_faas_errors(meter: Meter) -> Counter:
"""Number of invocation errors"""
return meter.create_counter(
name=FAAS_ERRORS,
description="Number of invocation errors",
unit="{error}",
)
FAAS_INIT_DURATION: Final = "faas.init_duration"
"""
Measures the duration of the function's initialization, such as a cold start
Instrument: histogram
Unit: s
"""
def create_faas_init_duration(meter: Meter) -> Histogram:
"""Measures the duration of the function's initialization, such as a cold start"""
return meter.create_histogram(
name=FAAS_INIT_DURATION,
description="Measures the duration of the function's initialization, such as a cold start",
unit="s",
)
FAAS_INVOCATIONS: Final = "faas.invocations"
"""
Number of successful invocations
Instrument: counter
Unit: {invocation}
"""
def create_faas_invocations(meter: Meter) -> Counter:
"""Number of successful invocations"""
return meter.create_counter(
name=FAAS_INVOCATIONS,
description="Number of successful invocations",
unit="{invocation}",
)
FAAS_INVOKE_DURATION: Final = "faas.invoke_duration"
"""
Measures the duration of the function's logic execution
Instrument: histogram
Unit: s
"""
def create_faas_invoke_duration(meter: Meter) -> Histogram:
"""Measures the duration of the function's logic execution"""
return meter.create_histogram(
name=FAAS_INVOKE_DURATION,
description="Measures the duration of the function's logic execution",
unit="s",
)
FAAS_MEM_USAGE: Final = "faas.mem_usage"
"""
Distribution of max memory usage per invocation
Instrument: histogram
Unit: By
"""
def create_faas_mem_usage(meter: Meter) -> Histogram:
"""Distribution of max memory usage per invocation"""
return meter.create_histogram(
name=FAAS_MEM_USAGE,
description="Distribution of max memory usage per invocation",
unit="By",
)
FAAS_NET_IO: Final = "faas.net_io"
"""
Distribution of net I/O usage per invocation
Instrument: histogram
Unit: By
"""
def create_faas_net_io(meter: Meter) -> Histogram:
"""Distribution of net I/O usage per invocation"""
return meter.create_histogram(
name=FAAS_NET_IO,
description="Distribution of net I/O usage per invocation",
unit="By",
)
FAAS_TIMEOUTS: Final = "faas.timeouts"
"""
Number of invocation timeouts
Instrument: counter
Unit: {timeout}
"""
def create_faas_timeouts(meter: Meter) -> Counter:
"""Number of invocation timeouts"""
return meter.create_counter(
name=FAAS_TIMEOUTS,
description="Number of invocation timeouts",
unit="{timeout}",
)
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