GlitchTip/observability/metrics.py

from django.core.cache import cache
from django.db.models import Count
from prometheus_client import Counter, Gauge

organizations_metric = Gauge("glitchtip_organizations", "Number of organizations")
projects_metric = Gauge(
    "glitchtip_projects", "Number of projects per organization", ["organization"]
)
issues_counter = Counter(
    "glitchtip_issues",
    "Issue creation counter per project",
    ["project", "organization"],
)

events_counter = Counter(
    "glitchtip_events",
    "Events creation counter per project",
    ["project", "organization", "issue"],
)

OBSERVABILITY_ORG_CACHE_KEY = "observability_org_metrics"


def compile_metrics():
    """Update and cache the organization and project metrics"""
    from organizations_ext.models import Organization  # avoid circular import

    orgs = cache.get_or_set(
        OBSERVABILITY_ORG_CACHE_KEY,
        lambda: Organization.objects.annotate(Count("projects"))
        .values("slug", "projects__count")
        .all(),
        timeout=None,
    )

    for org in orgs:
        projects_metric.labels(org["slug"]).set(org["projects__count"])

    organizations_metric.set(orgs.count())


def clear_metrics_cache():
    cache.delete(OBSERVABILITY_ORG_CACHE_KEY)