From b3b8cd807d560574f653b42e040c786fce318b64 Mon Sep 17 00:00:00 2001
From: Jens Langhammer <jens.langhammer@beryju.org>
Date: Tue, 7 Jul 2020 17:53:35 +0200
Subject: [PATCH] root: expose APM settings in helm chart

---
 docs/installation/kubernetes.md |  5 +++++
 helm/templates/configmap.yaml   |  4 ++++
 helm/values.yaml                |  5 +++++
 passbook/root/settings.py       | 13 +++++++++++++
 4 files changed, 27 insertions(+)

diff --git a/docs/installation/kubernetes.md b/docs/installation/kubernetes.md
index 35882adab..7e47718b2 100644
--- a/docs/installation/kubernetes.md
+++ b/docs/installation/kubernetes.md
@@ -22,6 +22,11 @@ config:
   # Log level used by web and worker
   # Can be either debug, info, warning, error
   log_level: warning
+  # Optionally enable Elastic APM Support
+  apm:
+    enabled: false
+    server_url: ""
+    secret_token: ""
 
 # This Helm chart ships with built-in Prometheus ServiceMonitors and Rules.
 # This requires the CoreOS Prometheus Operator.
diff --git a/helm/templates/configmap.yaml b/helm/templates/configmap.yaml
index c4bd4d71d..313a6c8c5 100644
--- a/helm/templates/configmap.yaml
+++ b/helm/templates/configmap.yaml
@@ -21,3 +21,7 @@ data:
       message_queue_db: 1
     error_reporting: {{ .Values.config.error_reporting }}
     log_level: "{{ .Values.config.log_level }}"
+    apm:
+      enabled: {{ .Values.config.apm.enabled }}
+      server_url: "{{ .Values.config.apm.server_url }}"
+      secret_token: "{{ .Values.config.apm.server_token }}"
diff --git a/helm/values.yaml b/helm/values.yaml
index 937a7fce8..4fb14448d 100644
--- a/helm/values.yaml
+++ b/helm/values.yaml
@@ -14,6 +14,11 @@ config:
   # Log level used by web and worker
   # Can be either debug, info, warning, error
   log_level: warning
+  # Optionally enable Elastic APM Support
+  apm:
+    enabled: false
+    server_url: ""
+    secret_token: ""
 
 # This Helm chart ships with built-in Prometheus ServiceMonitors and Rules.
 # This requires the CoreOS Prometheus Operator.
diff --git a/passbook/root/settings.py b/passbook/root/settings.py
index 4e7c2b381..149a6ee2c 100644
--- a/passbook/root/settings.py
+++ b/passbook/root/settings.py
@@ -281,6 +281,19 @@ if not DEBUG and _ERROR_REPORTING:
         release="passbook@%s" % __version__,
     )
 
+_APM_ENABLED = CONFIG.y("apm.enabled", True)
+if _APM_ENABLED:
+    INSTALLED_APPS.append("elasticapm.contrib.django")
+    ELASTIC_APM = {
+        "CLOUD_PROVIDER": False,
+        "DEBUG": DEBUG,
+        "SERVICE_NAME": "passbook",
+        "SERVICE_VERSION": __version__,
+        "SECRET_TOKEN": CONFIG.y("apm.secret_token", ""),
+        "SERVER_URL": CONFIG.y("apm.secret_token", "http://localhost:8200"),
+    }
+
+
 # Static files (CSS, JavaScript, Images)
 # https://docs.djangoproject.com/en/2.1/howto/static-files/