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rancher-partner-charts/charts/instana/instana-agent/templates/_helpers.tpl

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{{/* vim: set filetype=mustache: */}}
{{/*
Expand the name of the chart.
*/}}
{{- define "instana-agent.name" -}}
{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{/*
Create a default fully qualified app name.
We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
If release name contains chart name it will be used as a full name.
*/}}
{{- define "instana-agent.fullname" -}}
{{- if .Values.fullnameOverride -}}
{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
{{- else -}}
{{- $name := default .Chart.Name .Values.nameOverride -}}
{{- if contains $name .Release.Name -}}
{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
{{- else -}}
{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{- end -}}
{{- end -}}
{{/*
Create chart name and version as used by the chart label.
*/}}
{{- define "instana-agent.chart" -}}
{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{/*
The name of the ServiceAccount used.
*/}}
{{- define "instana-agent.serviceAccountName" -}}
{{- if .Values.serviceAccount.create -}}
{{ default (include "instana-agent.fullname" .) .Values.serviceAccount.name }}
{{- else -}}
{{ default "default" .Values.serviceAccount.name }}
{{- end -}}
{{- end -}}
{{/*
The name of the PodSecurityPolicy used.
*/}}
{{- define "instana-agent.podSecurityPolicyName" -}}
{{- if .Values.podSecurityPolicy.enable -}}
{{ default (include "instana-agent.fullname" .) .Values.podSecurityPolicy.name }}
{{- end -}}
{{- end -}}
{{/*
Prints out the name of the secret to use to retrieve the agent key
*/}}
{{- define "instana-agent.keysSecretName" -}}
{{- if .Values.agent.keysSecret -}}
{{ .Values.agent.keysSecret }}
{{- else -}}
{{ template "instana-agent.fullname" . }}
{{- end -}}
{{- end -}}
{{/*
Add Helm metadata to resource labels.
*/}}
{{- define "instana-agent.commonLabels" -}}
app.kubernetes.io/name: {{ include "instana-agent.name" . }}
app.kubernetes.io/version: {{ .Chart.Version }}
{{- if not .Values.templating }}
app.kubernetes.io/instance: {{ .Release.Name }}
app.kubernetes.io/managed-by: {{ .Release.Service }}
helm.sh/chart: {{ include "instana-agent.chart" . }}
{{- end -}}
{{- end -}}
{{/*
Add Helm metadata to selector labels specifically for deployments/daemonsets/statefulsets.
*/}}
{{- define "instana-agent.selectorLabels" -}}
app.kubernetes.io/name: {{ include "instana-agent.name" . }}
{{- if not .Values.templating }}
app.kubernetes.io/instance: {{ .Release.Name }}
{{- end -}}
{{- end -}}
{{/*
Generates the dockerconfig for the credentials to pull from containers.instana.io
*/}}
{{- define "imagePullSecretContainersInstanaIo" }}
{{- $registry := "containers.instana.io" }}
{{- $username := "_" }}
{{- $password := default .Values.agent.key .Values.agent.downloadKey }}
{{- printf "{\"auths\": {\"%s\": {\"auth\": \"%s\"}}}" $registry (printf "%s:%s" $username $password | b64enc) | b64enc }}
{{- end }}
{{/*
Output limits or defaults
*/}}
{{- define "instana-agent.resources" -}}
{{- $memory := default "512Mi" .memory -}}
{{- $cpu := default 0.5 .cpu -}}
memory: "{{ dict "memory" $memory | include "ensureMemoryMeasurement" }}"
cpu: {{ $cpu }}
{{- end -}}
{{/*
Ensure a unit of memory measurement is added to the value
*/}}
{{- define "ensureMemoryMeasurement" }}
{{- $value := .memory }}
{{- if kindIs "string" $value }}
{{- print $value }}
{{- else }}
{{- print ($value | toString) "Mi" }}
{{- end }}
{{- end }}
{{/*
Composes a container image from a dict containing a "name" field (required), "tag" and "digest" (both optional, if both provided, "digest" has priority)
*/}}
{{- define "image" }}
{{- $name := .name }}
{{- $tag := .tag }}
{{- $digest := .digest }}
{{- if $digest }}
{{- printf "%s@%s" $name $digest }}
{{- else if $tag }}
{{- printf "%s:%s" $name $tag }}
{{- else }}
{{- print $name }}
{{- end }}
{{- end }}
{{- define "volumeMountsForConfigFileInConfigMap" }}
{{- $configMapName := (include "instana-agent.fullname" .) }}
{{- $configMapNameSpace := .Release.Namespace }}
{{- $configMap := tpl ( ( "{{ lookup \"v1\" \"ConfigMap\" \"map-namespace\" \"map-name\" | toYaml }}" | replace "map-namespace" $configMapNameSpace ) | replace "map-name" $configMapName ) . }}
{{- if $configMap }}
{{- $configMapObject := $configMap | fromYaml }}
{{- range $key, $val := $configMapObject.data }}
{{- if regexMatch "configuration-disable-kubernetes-sensor\\.yaml" $key }}
{{/* Nothing to do here, this is a special case we want to ignore */}}
{{- else if regexMatch "configuration-opentelemetry\\.yaml" $key }}
{{/* Nothing to do here, this is a special case we want to ignore */}}
{{- else if regexMatch "configuration-prometheus-remote-write\\.yaml" $key }}
{{/* Nothing to do here, this is a special case we want to ignore */}}
{{- else if regexMatch "configuration-.*\\.yaml" $key }}
- name: configuration
subPath: {{ $key }}
mountPath: /opt/instana/agent/etc/instana/{{ $key }}
{{- end }}
{{- end }}
{{- end }}
{{- end }}
{{- define "instana-agent.commonEnv" -}}
- name: INSTANA_AGENT_LEADER_ELECTOR_PORT
value: {{ .Values.leaderElector.port | quote }}
{{- if .Values.zone.name }}
- name: INSTANA_ZONE
value: {{ .Values.zone.name | quote }}
{{- end }}
{{- if .Values.cluster.name }}
- name: INSTANA_KUBERNETES_CLUSTER_NAME
valueFrom:
configMapKeyRef:
name: {{ template "instana-agent.fullname" . }}
key: cluster_name
{{- end }}
- name: INSTANA_AGENT_ENDPOINT
value: {{ .Values.agent.endpointHost | quote }}
- name: INSTANA_AGENT_ENDPOINT_PORT
value: {{ .Values.agent.endpointPort | quote }}
- name: INSTANA_AGENT_KEY
valueFrom:
secretKeyRef:
name: {{ template "instana-agent.keysSecretName" . }}
key: key
- name: INSTANA_DOWNLOAD_KEY
valueFrom:
secretKeyRef:
name: {{ template "instana-agent.keysSecretName" . }}
key: downloadKey
optional: true
{{- if .Values.agent.instanaMvnRepoUrl }}
- name: INSTANA_MVN_REPOSITORY_URL
value: {{ .Values.agent.instanaMvnRepoUrl | quote }}
{{- end }}
{{- if .Values.agent.instanaMvnRepoFeaturesPath }}
- name: INSTANA_MVN_REPOSITORY_FEATURES_PATH
value: {{ .Values.agent.instanaMvnRepoFeaturesPath | quote }}
{{- end }}
{{- if .Values.agent.instanaMvnRepoSharedPath }}
- name: INSTANA_MVN_REPOSITORY_SHARED_PATH
value: {{ .Values.agent.instanaMvnRepoSharedPath | quote }}
{{- end }}
{{- if .Values.agent.proxyHost }}
- name: INSTANA_AGENT_PROXY_HOST
value: {{ .Values.agent.proxyHost | quote }}
{{- end }}
{{- if .Values.agent.proxyPort }}
- name: INSTANA_AGENT_PROXY_PORT
value: {{ .Values.agent.proxyPort | quote }}
{{- end }}
{{- if .Values.agent.proxyProtocol }}
- name: INSTANA_AGENT_PROXY_PROTOCOL
value: {{ .Values.agent.proxyProtocol | quote }}
{{- end }}
{{- if .Values.agent.proxyUser }}
- name: INSTANA_AGENT_PROXY_USER
value: {{ .Values.agent.proxyUser | quote }}
{{- end }}
{{- if .Values.agent.proxyPassword }}
- name: INSTANA_AGENT_PROXY_PASSWORD
value: {{ .Values.agent.proxyPassword | quote }}
{{- end }}
{{- if .Values.agent.proxyUseDNS }}
- name: INSTANA_AGENT_PROXY_USE_DNS
value: {{ .Values.agent.proxyUseDNS | quote }}
{{- end }}
{{- if .Values.agent.listenAddress }}
- name: INSTANA_AGENT_HTTP_LISTEN
value: {{ .Values.agent.listenAddress | quote }}
{{- end }}
{{- if .Values.agent.redactKubernetesSecrets }}
- name: INSTANA_KUBERNETES_REDACT_SECRETS
value: {{ .Values.agent.redactKubernetesSecrets | quote }}
{{- end }}
- name: INSTANA_AGENT_POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: POD_IP
valueFrom:
fieldRef:
fieldPath: status.podIP
{{- range $key, $value := .Values.agent.env }}
- name: {{ $key }}
value: {{ $value | quote }}
{{- end }}
{{- end -}}
{{- define "instana-agent.commonVolumeMounts" -}}
{{- if .Values.agent.host.repository }}
- name: repo
mountPath: /opt/instana/agent/data/repo
{{- end }}
{{- if .Values.agent.additionalBackends -}}
{{- range $index,$backend := .Values.agent.additionalBackends }}
{{- $backendIndex :=add $index 2 }}
- name: additional-backend-{{$backendIndex}}
subPath: additional-backend-{{$backendIndex}}
mountPath: /opt/instana/agent/etc/instana/com.instana.agent.main.sender.Backend-{{$backendIndex}}.cfg
{{- end -}}
{{- end -}}
{{- end -}}
{{- define "instana-agent.commonVolumes" -}}
- name: configuration
configMap:
name: {{ include "instana-agent.fullname" . }}
{{- if .Values.agent.host.repository }}
- name: repo
hostPath:
path: {{ .Values.agent.host.repository }}
{{- end }}
{{- if .Values.agent.additionalBackends }}
{{- range $index,$backend := .Values.agent.additionalBackends }}
{{ $backendIndex :=add $index 2 -}}
- name: additional-backend-{{$backendIndex}}
configMap:
name: {{ include "instana-agent.fullname" $ }}
{{- end }}
{{- end }}
{{- end -}}
{{- define "instana-agent.livenessProbe" -}}
httpGet:
host: 127.0.0.1 # localhost because Pod has hostNetwork=true
path: /status
port: 42699
initialDelaySeconds: 300 # startupProbe isnt available before K8s 1.16
timeoutSeconds: 3
periodSeconds: 10
failureThreshold: 3
{{- end -}}
{{- define "leader-elector.container" -}}
- name: leader-elector
image: {{ include "image" .Values.leaderElector.image | quote }}
env:
- name: INSTANA_AGENT_POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
command:
- "/busybox/sh"
- "-c"
- "sleep 12 && /app/server --election=instana --http=localhost:{{ .Values.leaderElector.port }} --id=$(INSTANA_AGENT_POD_NAME)"
resources:
requests:
cpu: 0.1
memory: "64Mi"
livenessProbe:
httpGet: # Leader elector /health endpoint expects version 0.5.8 minimum, otherwise always returns 200 OK
host: 127.0.0.1 # localhost because Pod has hostNetwork=true
path: /health
port: {{ .Values.leaderElector.port }}
initialDelaySeconds: 30
timeoutSeconds: 3
periodSeconds: 3
failureThreshold: 3
ports:
- containerPort: {{ .Values.leaderElector.port }}
{{- end -}}
{{- define "instana-agent.tls-volume" -}}
- name: {{ include "instana-agent.fullname" . }}-tls
secret:
secretName: {{ .Values.agent.tls.secretName | default (printf "%s-tls" (include "instana-agent.fullname" .)) }}
defaultMode: 0440
{{- end -}}
{{- define "instana-agent.tls-volumeMounts" -}}
- name: {{ include "instana-agent.fullname" . }}-tls
mountPath: /opt/instana/agent/etc/certs
readOnly: true
{{- end -}}
{{- define "k8sensor.commonEnv" -}}
{{- range $key, $value := .Values.agent.env }}
- name: {{ $key }}
value: {{ $value | quote }}
{{- end }}
{{- end -}}
{{/*NOTE: These are nested templates not functions, if I format this to make it readable then it won't work the way */}}
{{/*we need it to since all of the newlines and spaces will be included into the output. Helm is */}}
{{/*not fundamentally designed to do what we are doing here.*/}}
{{- define "instana-agent.opentelemetry.grpc.isEnabled" -}}{{ if hasKey .Values "opentelemetry" }}{{ if hasKey .Values.opentelemetry "grpc" }}{{ if hasKey .Values.opentelemetry.grpc "enabled" }}{{ .Values.opentelemetry.grpc.enabled }}{{ else }}{{ true }}{{ end }}{{ else }}{{ if hasKey .Values.opentelemetry "enabled" }}{{ .Values.opentelemetry.enabled }}{{ else }}{{ false }}{{ end }}{{ end }}{{ else }}{{ false }}{{ end }}{{- end -}}
{{- define "instana-agent.opentelemetry.http.isEnabled" -}}{{ if hasKey .Values "opentelemetry" }}{{ if hasKey .Values.opentelemetry "http" }}{{ if hasKey .Values.opentelemetry.http "enabled" }}{{ .Values.opentelemetry.http.enabled }}{{ else }}{{ true }}{{ end }}{{ else }}{{ false }}{{ end }}{{ else }}{{ false }}{{ end }}{{- end -}}
{{- define "kubeVersion" -}}
{{- if (regexMatch "\\d+\\.\\d+\\.\\d+-(?:eks|gke).+" .Capabilities.KubeVersion.Version) -}}
{{- regexFind "\\d+\\.\\d+\\.\\d+" .Capabilities.KubeVersion.Version -}}
{{- else -}}
{{- printf .Capabilities.KubeVersion.Version }}
{{- end -}}
{{- end -}}
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