Reference library

Observability & SRE

Structured logging, metrics, tracing, health checks, and SLO-friendly instrumentation.

4 matches

Generate Mock CPU and Memory Metrics in Python

Build a mock_host_metrics() generator that outputs realistic CPU and memory usage percentages for monitoring demos and tests.

mock metrics monitoring

Python

import time
import random


def mock_host_metrics():
    """Generate mock CPU and memory metrics for a host."""
    cpu_percent = round(random.uniform(10.0, 95.0), 1)
    memory_percent = round(random.uniform(20.0, 90.0), 1)
    memory_used_mb = round(random.uniform(512, 8192), 1)

    return {
        "timestamp": in…

15 0 Open

Observability & SRE medium

How to Create a Mock OpenTelemetry Trace in Python

Create a mock OpenTelemetry trace in memory to test span creation, attributes, and parent-child relationships without exporting to a backend.

opentelemetry tracing testing

Python

from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import SimpleSpanProcessor
from opentelemetry.sdk.trace.export.in_memory_span_exporter import InMemorySpanExporter


def create_mock_trace():
    tracer_provider = TracerProvider()
    span_exporter =…

13 0 Open

Observability & SRE easy

How to Mock a Baggage Context (Key-Value Store) in Python

This code implements an in-memory key-value mock of a baggage context, letting you set, get, check, and delete keys for tracing-style metadata.

baggage tracing mock

Python

class BaggageContext:
    def __init__(self):
        self._store = {}

    def set(self, key, value):
        self._store[key] = value
        return value

    def get(self, key, default=None):
        return self._store.get(key, default)

    def has(self, key):
        return key in self._store

    def delete(sel…

15 0 Open

Observability & SRE medium

Summary Quantile Mock Sketch in Python

Build a memory-efficient sketch that stores sorted bins of data points to answer approximate quantile queries like median without keeping all values in memory.

quantile sketch statistics

Python

import random
import statistics
from collections import Counter

class SummaryQuantileSketch:
    """
    A simple sketch that stores a fixed-size summary of data (min, max, deciles)
    using sorted bins, then answers approximate quantile queries.
    """
    def __init__(self, bins=10):
        self.bins = bins
    …

13 0 Open

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