Namespace external metrics (#259 )

Signed-off-by: Mikkel Oscar Lyderik Larsen <mikkel.larsen@zalando.de>
Use Github actions instead of travis (#270 )
2026-07-10 06:58:42 +00:00 · 2021-02-19 11:11:29 +01:00 · 2021-02-19 10:31:20 +01:00 · 2021-02-01 18:49:22 +01:00 · 2021-02-01 10:26:01 +01:00 · 2021-01-15 14:56:27 +01:00
59 changed files with 19109 additions and 1732 deletions
@@ -1,35 +0,0 @@
-# These owners will be the default owners for everything in
-# the repo. 
-*       @arjunrn
-
-
-
-# Samples for assigning codeowners below:
-# Order is important; the last matching pattern takes the most
-# precedence. When someone opens a pull request that only
-# modifies JS files, only @js-owner and not the global
-# owner(s) will be requested for a review.
-# *.js    @js-owner
-
-# You can also use email addresses if you prefer. They'll be
-# used to look up users just like we do for commit author
-# emails.
-# *.go docs@example.com
-
-# In this example, @doctocat owns any files in the build/logs
-# directory at the root of the repository and any of its
-# subdirectories.
-# /build/logs/ @doctocat
-
-# The `docs/*` pattern will match files like
-# `docs/getting-started.md` but not further nested files like
-# `docs/build-app/troubleshooting.md`.
-# docs/*  docs@example.com
-
-# In this example, @octocat owns any file in an apps directory
-# anywhere in your repository.
-# apps/ @octocat
-
-# In this example, @doctocat owns any file in the `/docs`
-# directory in the root of your repository.
-# /docs/ @doctocat
@@ -0,0 +1,14 @@
+version: 2
+updates:
+- package-ecosystem: gomod
+  directory: "/"
+  schedule:
+    interval: monthly
+    time: "07:00"
+  open-pull-requests-limit: 10
+- package-ecosystem: docker
+  directory: "/"
+  schedule:
+    interval: monthly
+    time: "07:00"
+  open-pull-requests-limit: 10
@@ -0,0 +1,25 @@
+name: ci
+on: [push, pull_request]
+env:
+  GO111MODULE: on
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-go@v2
+      with:
+        go-version: '^1.16'
+    - run: go version
+    - run: go get github.com/mattn/goveralls
+      env:
+        GO111MODULE: off
+    - run: curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b $(go env GOPATH)/bin ${GOLANGCI_RELEASE}
+      env:
+        GOLANGCI_RELEASE: v1.37.0
+    - run: make build.docker
+    - run: make test
+    - run: make check
+    - run: goveralls -coverprofile=profile.cov -service=github
+      env:
+        COVERALLS_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -1,4 +1,5 @@
 build/
 apiserver.local.config/
 .idea/
+profile.cov
 vendor/
@@ -1,7 +1,4 @@
 run:
-  skip-files:
-  - "pkg/provider/generated.conversion.go"
-  - "pkg/provider/conversion.go"
 linters-settings:
  golint:
      min-confidence: 0.9
@@ -1,20 +0,0 @@
-language: go
-dist: xenial
-
-go:
-  - "1.13.x"
-
-env:
- GO111MODULE=on GOLANGCI_RELEASE="v1.16.0"
-
-before_install:
-  - GO111MODULE=off go get github.com/mattn/goveralls
-  - GO111MODULE=off go get github.com/lawrencewoodman/roveralls
-  - curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b $(go env GOPATH)/bin ${GOLANGCI_RELEASE}
-
-script:
-  - make check
-  - make test
-  - make build.docker
-  - roveralls
-  - goveralls -v -coverprofile=roveralls.coverprofile -service=travis-ci
@@ -1,5 +1,5 @@
-FROM registry.opensource.zalan.do/stups/alpine:latest
-MAINTAINER Team Teapot @ Zalando SE <team-teapot@zalando.de>
+FROM registry.opensource.zalan.do/library/alpine-3.12:latest
+LABEL maintainer="Team Teapot @ Zalando SE <team-teapot@zalando.de>"

 # add binary
 ADD build/linux/kube-metrics-adapter /
@@ -1,3 +1,2 @@
 Mikkel Larsen <mikkel.larsen@zalando.de>
-Arjun Naik <arjun.naik@zalando.de>
 Team Teapot <team-teapot@zalando.de>
@@ -8,30 +8,45 @@ SOURCES       = $(shell find . -name '*.go')
 DOCKERFILE    ?= Dockerfile
 GOPKGS        = $(shell go list ./...)
 BUILD_FLAGS   ?= -v
+OPENAPI       ?= pkg/api/generated/openapi/zz_generated.openapi.go
 LDFLAGS       ?= -X main.version=$(VERSION) -w -s

+
 default: build.local

 clean:
 	rm -rf build
+	rm -rf $(OPENAPI)

 test:
-	go test -v $(GOPKGS)
+	go test -v -coverprofile=profile.cov $(GOPKGS)

 check:
-	golangci-lint run ./...
+	go mod download
+	golangci-lint run --timeout=2m ./...
+
+
+$(OPENAPI): go.mod
+	go run k8s.io/kube-openapi/cmd/openapi-gen \
+		--go-header-file hack/boilerplate.go.txt \
+		--logtostderr \
+		-i k8s.io/metrics/pkg/apis/custom_metrics,k8s.io/metrics/pkg/apis/custom_metrics/v1beta1,k8s.io/metrics/pkg/apis/custom_metrics/v1beta2,k8s.io/metrics/pkg/apis/external_metrics,k8s.io/metrics/pkg/apis/external_metrics/v1beta1,k8s.io/metrics/pkg/apis/metrics,k8s.io/metrics/pkg/apis/metrics/v1beta1,k8s.io/apimachinery/pkg/apis/meta/v1,k8s.io/apimachinery/pkg/api/resource,k8s.io/apimachinery/pkg/version,k8s.io/api/core/v1 \
+		-p pkg/api/generated/openapi \
+		-o . \
+		-O zz_generated.openapi \
+		-r /dev/null

 build.local: build/$(BINARY)
 build.linux: build/linux/$(BINARY)
 build.osx: build/osx/$(BINARY)

-build/$(BINARY): go.mod $(SOURCES)
+build/$(BINARY): go.mod $(SOURCES) $(OPENAPI)
 	CGO_ENABLED=0 go build -o build/$(BINARY) $(BUILD_FLAGS) -ldflags "$(LDFLAGS)" .

-build/linux/$(BINARY): go.mod $(SOURCES)
+build/linux/$(BINARY): go.mod $(SOURCES) $(OPENAPI)
 	GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build $(BUILD_FLAGS) -o build/linux/$(BINARY) -ldflags "$(LDFLAGS)" .

-build/osx/$(BINARY): go.mod $(SOURCES)
+build/osx/$(BINARY): go.mod $(SOURCES) $(OPENAPI)
 	GOOS=darwin GOARCH=amd64 CGO_ENABLED=0 go build $(BUILD_FLAGS) -o build/osx/$(BINARY) -ldflags "$(LDFLAGS)" .

 build.docker: build.linux
@@ -1,7 +1,8 @@
 We acknowledge that every line of code that we write may potentially contain security issues.
+We are trying to deal with it responsibly and provide patches as quickly as possible.

-We are trying to deal with it responsibly and provide patches as quickly as  possible. If you have anything to report to us please use the following channels:
+We host our bug bounty program on HackerOne, it is currently private, therefore if you would like to report a vulnerability and get rewarded for it, please ask to join our program by filling this form:

-Email: Tech-Security@zalando.de
-OR
-Submit your vulnerability report through our bug bounty program at: https://hackerone.com/zalando
+https://corporate.zalando.com/en/services-and-contact#security-form
+
+You can also send you report via this form if you do not want to join our bug bounty program and just want to report a vulnerability or security issue.
@@ -0,0 +1,9 @@
+apiVersion: v2
+name: kube-metrics-adapter
+version: 0.1.9
+description: kube-metrics-adapter helm chart
+home: https://github.com/zalando-incubator/kube-metrics-adapter
+maintainers:
+  - name: The Zalando Incubator
+    email: opensource@zalando.de
+    url: https://github.com/zalando-incubator
@@ -0,0 +1,15 @@
+{{- if .Values.enableCustomMetricsApi }}
+apiVersion: apiregistration.k8s.io/v1beta1
+kind: APIService
+metadata:
+  name: v1beta1.custom.metrics.k8s.io
+spec:
+  service:
+    name: kube-metrics-adapter
+    namespace: {{ .Values.namespace }}
+  group: custom.metrics.k8s.io
+  version: v1beta1
+  insecureSkipTLSVerify: {{ .Values.tls.skipTLSVerify }}
+  groupPriorityMinimum: 100
+  versionPriority: 100
+{{- end}}
@@ -0,0 +1,191 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: kube-metrics-adapter
+  namespace: {{ .Values.namespace }}
+  labels:
+    application: kube-metrics-adapter
+    version: {{ .Values.registry.imageTag }}
+spec:
+  replicas: {{ .Values.replicas }}
+  selector:
+    matchLabels:
+      application: kube-metrics-adapter
+  template:
+    metadata:
+      labels:
+        application: kube-metrics-adapter
+        version: {{ .Values.registry.imageTag }}
+    spec:
+      serviceAccountName: kube-metrics-adapter
+      containers:
+        - name: kube-metrics-adapter
+          image: {{ .Values.registry.image}}:{{ .Values.registry.imageTag }}
+          args:
+            {{- if .Values.addDirectoryHeader }}
+            - --add_dir_header={{ .Values.addDirectoryHeader }}
+            {{- end}}
+            {{- if .Values.log.alsoToStderr }}
+            - --alsologtostderr={{ .Values.log.alsoToStderr }}
+            {{- end}}
+            {{- if .Values.authentication.kubeConfig }}
+            - --authentication-kubeconfig={{ .Values.authentication.kubeConfig }}
+            {{- end}}
+            {{- if .Values.authentication.skipLookup }}
+            - --authentication-skip-lookup={{ .Values.authentication.skipLookup }}
+            {{- end}}
+            {{- if .Values.authentication.tokenWebhookCacheTtl }}
+            - --authentication-token-webhook-cache-ttl={{ .Values.authentication.tokenWebhookCacheTtl }}
+            {{- end}}
+            {{- if .Values.authentication.tolerateLookupFailure }}
+            - --authentication-tolerate-lookup-failure={{ .Values.authentication.tolerateLookupFailure }}
+            {{- end}}
+            {{- if .Values.authorization.alwaysAllowPaths }}
+            - --authorization-always-allow-paths={{ .Values.authorization.alwaysAllowPaths }}
+            {{- end}}
+            {{- if .Values.authorization.kubeConfig }}
+            - --authorization-kubeconfig={{ .Values.authorization.kubeConfig }}
+            {{- end}}
+            {{- if .Values.authorization.webhookCache.authorizedTtl }}
+            - --authorization-webhook-cache-authorized-ttl={{ .Values.authorization.webhookCache.authorizedTtl }}
+            {{- end}}
+            {{- if .Values.authorization.webhookCache.unauthorizedTtl }}
+            - --authorization-webhook-cache-unauthorized-ttl={{ .Values.authorization.webhookCache.unauthorizedTtl }}
+            {{- end}}
+            {{- if .Values.aws.externalMetrics }}
+            - --aws-external-metrics={{ .Values.aws.externalMetrics }}
+            {{- end}}
+            {{- if .Values.aws.region }}
+            - --aws-region={{ .Values.aws.region }}
+            {{- end}}
+            {{- if .Values.tls.certificateDirectory }}
+            - --cert-dir={{ .Values.tls.certificateDirectory }}
+            {{- end}}
+            {{- if .Values.tls.clientCaFile }}
+            - --client-ca-file={{ .Values.tls.clientCaFile }}
+            {{- end}}
+            {{- if .Values.contentionProfiling }}
+            - --contention-profiling={{ .Values.contentionProfiling }}
+            {{- end}}
+            {{- if .Values.credentialsDirectory }}
+            - --credentials-dir={{ .Values.credentialsDirectory }}
+            {{- end}}
+            {{- if .Values.disregardIncompatibleHPAs }}
+            - --disregard-incompatible-hpas={{ .Values.disregardIncompatibleHPAs }}
+            {{- end}}
+            {{- if .Values.enableCustomMetricsApi }}
+            - --enable-custom-metrics-api={{ .Values.enableCustomMetricsApi }}
+            {{- end}}
+            {{- if .Values.enableExternalMetricsApi }}
+            - --enable-external-metrics-api={{ .Values.enableExternalMetricsApi }}
+            {{- end}}
+            {{- if .Values.http2MaxStreamsPerConnection }}
+            - --http2-max-streams-per-connection={{ .Values.http2MaxStreamsPerConnection }}
+            {{- end}}
+            {{- if .Values.influxDB.address }}
+            - --influxdb-address={{ .Values.influxDB.address }}
+            {{- end}}
+            {{- if .Values.influxDB.organization }}
+            - --influxdb-org={{ .Values.influxDB.organization }}
+            {{- end}}
+            {{- if .Values.influxDB.token }}
+            - --influxdb-token={{ .Values.influxDB.token }}
+            {{- end}}
+            {{- if .Values.listerKubeConfig }}
+            - --lister-kubeconfig={{ .Values.listerKubeConfig }}
+            {{- end}}
+            {{- if .Values.log.flushFrequency }}
+            - --log-flush-frequency={{ .Values.log.flushFrequency }}
+            {{- end}}
+            {{- if .Values.log.backtraceAtTraceLocation }}
+            - --log_backtrace_at={{ .Values.log.backtraceAtTraceLocation }}
+            {{- end}}
+            {{- if .Values.log.directory }}
+            - --log_dir={{ .Values.log.directory }}
+            {{- end}}
+            {{- if .Values.log.file }}
+            - --log_file={{ .Values.log.file }}
+            {{- end}}
+            {{- if .Values.log.fileMaxSize }}
+            - --log_file_max_size={{ .Values.log.fileMaxSize }}
+            {{- end}}
+            {{- if .Values.log.toStderr }}
+            - --logtostderr={{ .Values.log.toStderr }}
+            {{- end}}
+            {{- if .Values.prometheus.metricsAddress }}
+            - --metrics-address={{ .Values.prometheus.metricsAddress }}
+            {{- end}}
+            {{- if .Values.profiling }}
+            - --profiling={{ .Values.profiling }}
+            {{- end}}
+            {{- if .Values.prometheus.server }}
+            - --prometheus-server={{ .Values.prometheus.server }}
+            {{- end}}
+            {{- if .Values.requestHeader.allowedNames }}
+            - --requestheader-allowed-names={{ .Values.requestHeader.allowedNames }}
+            {{- end}}
+            {{- if .Values.requestHeader.clientCaFile }}
+            - --requestheader-client-ca-file={{ .Values.requestHeader.clientCaFile }}
+            {{- end}}
+            {{- if .Values.requestHeader.extraHeadersPrefix }}
+            - --requestheader-extra-headers-prefix={{ .Values.requestHeader.extraHeadersPrefix }}
+            {{- end}}
+            {{- if .Values.requestHeader.groupHeaders }}
+            - --requestheader-group-headers={{ .Values.requestHeader.groupHeaders }}
+            {{- end}}
+            {{- if .Values.requestHeader.usernameHeaders }}
+            - --requestheader-username-headers={{ .Values.requestHeader.usernameHeaders }}
+            {{- end}}
+            - --secure-port={{ .Values.service.internalPort }}
+            {{- if .Values.log.skipHeaders }}
+            - --skip_headers={{ .Values.log.skipHeaders }}
+            {{- end}}
+            {{- if .Values.log.skipLogHeaders }}
+            - --skip_log_headers={{ .Values.log.skipLogHeaders }}
+            {{- end}}
+            {{- if .Values.skipperBackendsAnnotation }}
+            - --skipper-backends-annotation={{ .Values.skipperBackendsAnnotation }}
+            {{- end}}
+            {{- if .Values.skipperIngressMetrics }}
+            - --skipper-ingress-metrics={{ .Values.skipperIngressMetrics }}
+            {{- end}}
+            {{- if .Values.log.stderrThreshold }}
+            - --stderrthreshold={{ .Values.log.stderrThreshold }}
+            {{- end}}
+            {{- if .Values.tls.certFile }}
+            - --tls-cert-file={{ .Values.tls.certFile }}
+            {{- end}}
+            {{- if .Values.tls.cipherSuites }}
+            - --tls-cipher-suites={{ .Values.tls.cipherSuites }}
+            {{- end}}
+            {{- if .Values.tls.minVersion }}
+            - --tls-min-version={{ .Values.tls.minVersion }}
+            {{- end}}
+            {{- if .Values.tls.privateKeyFile }}
+            - --tls-private-key-file={{ .Values.tls.privateKeyFile }}
+            {{- end}}
+            {{- if .Values.tls.sniCertKey }}
+            - --tls-sni-cert-key={{ .Values.tls.sniCertKey }}
+            {{- end}}
+            {{- if .Values.token }}
+            - --token={{ .Values.token }}
+            {{- end}}
+            {{- if .Values.log.level }}
+            - --v={{ .Values.log.level }}
+            {{- end}}
+            {{- if .Values.vmodule }}
+            - --vmodule={{ .Values.vmodule }}
+            {{- end}}
+            {{- if .Values.zmon.kariosdbEndpoint }}
+            - --zmon-kariosdb-endpoint={{ .Values.zmon.kariosdbEndpoint }}
+            {{- end}}
+            {{- if .Values.zmon.tokenName }}
+            - --zmon-token-name={{ .Values.zmon.tokenName }}
+            {{- end}}
+          resources:
+            limits:
+              cpu: {{ .Values.resources.limits.cpu }}
+              memory: {{ .Values.resources.limits.memory }}
+            requests:
+              cpu: {{ .Values.resources.requests.cpu }}
+              memory: {{ .Values.resources.requests.memory }}
@@ -0,0 +1,15 @@
+{{- if .Values.enableExternalMetricsApi }}
+apiVersion: apiregistration.k8s.io/v1beta1
+kind: APIService
+metadata:
+  name: v1beta1.external.metrics.k8s.io
+spec:
+  service:
+    name: kube-metrics-adapter
+    namespace: {{ .Values.namespace }}
+  group: external.metrics.k8s.io
+  version: v1beta1
+  insecureSkipTLSVerify: {{ .Values.tls.skipTLSVerify }}
+  groupPriorityMinimum: 100
+  versionPriority: 100
+{{- end}}
@@ -0,0 +1,154 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: kube-metrics-adapter-server-resources
+rules:
+- apiGroups:
+  - custom.metrics.k8s.io
+  resources: ["*"]
+  verbs: ["*"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: external-metrics-server-resources
+rules:
+- apiGroups:
+  - external.metrics.k8s.io
+  resources: ["*"]
+  verbs: ["*"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: kube-metrics-adapter-resource-reader
+rules:
+- apiGroups:
+  - ""
+  resources:
+  - namespaces
+  - pods
+  - services
+  - configmaps
+  verbs:
+  - get
+  - list
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: kube-metrics-adapter-resource-collector
+rules:
+- apiGroups:
+  - ""
+  resources:
+  - events
+  verbs:
+  - create
+  - patch
+- apiGroups:
+  - ""
+  resources:
+  - pods
+  verbs:
+  - list
+- apiGroups:
+  - apps
+  resources:
+  - deployments
+  - statefulsets
+  verbs:
+  - get
+- apiGroups:
+  - extensions
+  resources:
+  - ingresses
+  verbs:
+  - get
+- apiGroups:
+  - autoscaling
+  resources:
+  - horizontalpodautoscalers
+  verbs:
+  - get
+  - list
+  - watch
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: hpa-controller-custom-metrics
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: kube-metrics-adapter-server-resources
+subjects:
+- kind: ServiceAccount
+  name: horizontal-pod-autoscaler
+  namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: hpa-controller-external-metrics
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: external-metrics-server-resources
+subjects:
+- kind: ServiceAccount
+  name: horizontal-pod-autoscaler
+  namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: kube-metrics-adapter-auth-reader
+  namespace: kube-system
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: extension-apiserver-authentication-reader
+subjects:
+- kind: ServiceAccount
+  name: kube-metrics-adapter
+  namespace: {{ .Values.namespace }}
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: custom-metrics:system:auth-delegator
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: system:auth-delegator
+subjects:
+- kind: ServiceAccount
+  name: kube-metrics-adapter
+  namespace: {{ .Values.namespace }}
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: kube-metrics-adapter-resource-collector
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: kube-metrics-adapter-resource-collector
+subjects:
+- kind: ServiceAccount
+  name: kube-metrics-adapter
+  namespace: {{ .Values.namespace }}
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: kube-metrics-adapter-resource-reader
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: kube-metrics-adapter-resource-reader
+subjects:
+- kind: ServiceAccount
+  name: kube-metrics-adapter
+  namespace: {{ .Values.namespace }}
@@ -0,0 +1,5 @@
+kind: ServiceAccount
+apiVersion: v1
+metadata:
+  name: kube-metrics-adapter
+  namespace: {{ .Values.namespace }}
@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: kube-metrics-adapter
+  namespace: {{ .Values.namespace }}
+spec:
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: {{ .Values.service.internalPort }}
+  selector:
+    application: kube-metrics-adapter
@@ -0,0 +1,94 @@
+namespace: kube-system
+
+replicas: 1
+
+registry:
+  image: registry.opensource.zalan.do/teapot/kube-metrics-adapter
+  imageTag: v0.1.9
+  imagePullPolicy: IfNotPresent
+
+service:
+  port: 443
+  internalPort: 443
+
+addDirectoryHeader:
+contentionProfiling:
+profiling:
+enableCustomMetricsApi:
+enableExternalMetricsApi:
+credentialsDirectory:
+disregardIncompatibleHPAs:
+http2MaxStreamsPerConnection:
+listerKubeConfig:
+skipperBackendsAnnotation:
+skipperIngressMetrics:
+token:
+vmodule:
+
+authentication:
+  kubeConfig:
+  skipLookup:
+  tokenWebhookCacheTtl:
+  tolerateLookupFailure:
+
+authorization:
+  kubeConfig:
+  alwaysAllowPaths:
+  webhookCache:
+    authorizedTtl:
+    unauthorizedTtl:
+
+aws:
+  externalMetrics:
+  region:
+
+influxDB:
+  address:
+  organization:
+  token:
+
+log:
+  alsoToStderr:
+  toStderr:
+  flushFrequency:
+  backtraceAtTraceLocation:
+  directory:
+  file:
+  fileMaxSize:
+  level:
+  stderrThreshold:
+  skipHeaders:
+  skipLogHeaders:
+
+prometheus:
+  server: http://prometheus.kube-system.svc.cluster.local
+  metricsAddress:
+
+requestHeader:
+  allowedNames:
+  clientCaFile:
+  extraHeadersPrefix:
+  groupHeaders:
+  usernameHeaders:
+
+tls:
+  skipTLSVerify: true
+  certificateDirectory:
+  clientCaFile:
+  certFile:
+  cipherSuites:
+  minVersion:
+  privateKeyFile:
+  sniCertKey:
+
+zmon:
+  kariosdbEndpoint:
+  tokenName:
+
+resources:
+  limits:
+    cpu: 100m
+    memory: 100Mi
+  requests:
+    cpu: 100m
+    memory: 100Mi
@@ -1,4 +1,4 @@
-apiVersion: autoscaling/v2beta1
+apiVersion: autoscaling/v2beta2
 kind: HorizontalPodAutoscaler
 metadata:
  name: custom-metrics-consumer
@@ -6,7 +6,7 @@ metadata:
  labels:
    application: custom-metrics-consumer
  annotations:
-    # metric-config.<metricType>.<metricName>.<collectorName>/<configKey>
+    # metric-config.<metricType>.<metricName>.<collectorType>/<configKey>
    metric-config.pods.queue-length.json-path/json-key: "$.queue.length"
    metric-config.pods.queue-length.json-path/path: /metrics
    metric-config.pods.queue-length.json-path/port: "9090"
@@ -25,24 +25,37 @@ spec:
  # - type: Resource
  #   resource:
  #     name: cpu
-  #     targetAverageUtilization: 50
+  #     current:
+  #       averageUtilization: 50
+
  - type: Pods
    pods:
-      metricName: queue-length
-      targetAverageValue: 1k
+      metric:
+        name: queue-length
+      target:
+        averageValue: 1k
+        type: AverageValue
+
  - type: Object
    object:
-      metricName: requests-per-second
-      target:
+      describedObject:
        apiVersion: extensions/v1beta1
        kind: Ingress
        name: custom-metrics-consumer
-      targetValue: 10 # this will be treated as targetAverageValue
+      metric:
+        name: requests-per-second
+      target:
+        averageValue: "10"
+        type: AverageValue
  - type: External
    external:
-      metricName: sqs-queue-length
-      metricSelector:
-        matchLabels:
-          queue-name: foobar
-          region: eu-central-1
-      targetAverageValue: 30
+      metric:
+        name: app-queue-length
+        selector:
+          matchLabels:
+            type: sqs-queue-length
+            queue-name: foobar
+            region: eu-central-1
+      target:
+        averageValue: "30"
+        type: AverageValue
@@ -2,32 +2,32 @@ module github.com/zalando-incubator/kube-metrics-adapter

 require (
 	github.com/NYTimes/gziphandler v1.0.1 // indirect
-	github.com/aws/aws-sdk-go v1.16.6
-	github.com/coreos/go-systemd v0.0.0-20180705093442-88bfeed483d3 // indirect
-	github.com/golang/groupcache v0.0.0-20180513044358-24b0969c4cb7 // indirect
-	github.com/googleapis/gnostic v0.2.0 // indirect
-	github.com/grpc-ecosystem/grpc-gateway v1.4.1 // indirect
-	github.com/imdario/mergo v0.3.6 // indirect
-	github.com/inconshreveable/mousetrap v1.0.0 // indirect
-	github.com/kubernetes-incubator/custom-metrics-apiserver v0.0.0-20190918110929-3d9be26a50eb
-	github.com/oliveagle/jsonpath v0.0.0-20180606110733-2e52cf6e6852
-	github.com/prometheus/client_golang v0.9.2
-	github.com/prometheus/common v0.0.0-20181126121408-4724e9255275
-	github.com/sirupsen/logrus v1.4.2
-	github.com/soheilhy/cmux v0.1.4 // indirect
-	github.com/spf13/cobra v0.0.3
-	github.com/stretchr/testify v1.3.0
-	github.com/tmc/grpc-websocket-proxy v0.0.0-20171017195756-830351dc03c6 // indirect
+	github.com/aws/aws-sdk-go v1.37.1
+	github.com/go-openapi/spec v0.20.2
+	github.com/influxdata/influxdb-client-go v0.2.0
+	github.com/influxdata/line-protocol v0.0.0-20201012155213-5f565037cbc9 // indirect
+	github.com/kubernetes-sigs/custom-metrics-apiserver v0.0.0-20201216091021-1b9fa998bbaa
+	github.com/mattn/go-colorable v0.1.4 // indirect
+	github.com/mattn/go-isatty v0.0.10 // indirect
+	github.com/onsi/gomega v1.8.1 // indirect
+	github.com/prometheus/client_golang v1.9.0
+	github.com/prometheus/common v0.15.0
+	github.com/sirupsen/logrus v1.7.0
+	github.com/spf13/cobra v0.0.7
+	github.com/spyzhov/ajson v0.4.2
+	github.com/stretchr/testify v1.7.0
 	github.com/zalando-incubator/cluster-lifecycle-manager v0.0.0-20180921141935-824b77fb1f84
-	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45
-	gopkg.in/inf.v0 v0.9.1 // indirect
-	k8s.io/api v0.0.0-20190918155943-95b840bb6a1f
-	k8s.io/apimachinery v0.0.0-20190913080033-27d36303b655
-	k8s.io/apiserver v0.0.0-20190918160949-bfa5e2e684ad // indirect
-	k8s.io/client-go v0.0.0-20190918160344-1fbdaa4c8d90
-	k8s.io/component-base v0.0.0-20190918160511-547f6c5d7090
-	k8s.io/klog v0.4.0
-	k8s.io/metrics v0.0.0-20190226180357-f3f09b9076d1
+	golang.org/x/crypto v0.0.0-20201124201722-c8d3bf9c5392 // indirect
+	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
+	k8s.io/api v0.20.0
+	k8s.io/apimachinery v0.20.0
+	k8s.io/apiserver v0.20.0
+	k8s.io/client-go v0.20.0
+	k8s.io/component-base v0.20.0
+	k8s.io/klog v1.0.0
+	k8s.io/kube-openapi v0.0.0-20201113171705-d219536bb9fd
+	k8s.io/metrics v0.20.0
 )

-go 1.13
+go 1.15
@@ -0,0 +1,16 @@
+/*
+Copyright The Kubernetes 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.
+*/
+
@@ -0,0 +1,6 @@
+// +build tools
+
+// This package imports things required by build scripts, to force `go mod` to see them as dependencies
+package tools
+
+import _ "k8s.io/kube-openapi/cmd/openapi-gen"
@@ -18,6 +18,7 @@ package main

 import (
 	"flag"
+	_ "net/http/pprof"
 	"os"
 	"runtime"

@@ -15,7 +15,7 @@ const (
 )

 type AnnotationConfigs struct {
-	CollectorName string
+	CollectorType string
 	Configs       map[string]string
 	PerReplica    bool
 	Interval      time.Duration
@@ -64,14 +64,14 @@ func (m AnnotationConfigMap) Parse(annotations map[string]string) error {
 		config, ok := m[key]
 		if !ok {
 			config = &AnnotationConfigs{
-				CollectorName: metricCollector,
+				CollectorType: metricCollector,
 				Configs:       map[string]string{},
 			}
 			m[key] = config
 		}

 		// TODO: fail if collector name doesn't match
-		if config.CollectorName != metricCollector {
+		if config.CollectorType != metricCollector {
 			continue
 		}

@@ -65,6 +65,42 @@ func TestParser(t *testing.T) {
 			},
 			PerReplica: false,
 		},
+		{
+			Name: "influxdb metrics",
+			Annotations: map[string]string{
+				"metric-config.external.flux-query.influxdb/range1m": `from(bucket: "?") |> range(start: -1m)`,
+				"metric-config.external.flux-query.influxdb/range2m": `from(bucket: "?") |> range(start: -2m)`,
+				"metric-config.external.flux-query.influxdb/range3m": `from(bucket: "?") |> range(start: -3m)`,
+				"metric-config.external.flux-query.influxdb/address": "http://localhost:9999",
+				"metric-config.external.flux-query.influxdb/token":   "sEcr3TT0ken",
+				"metric-config.external.flux-query.influxdb/org-id":  "deadbeef",
+			},
+			MetricName: "flux-query",
+			MetricType: autoscalingv2.ExternalMetricSourceType,
+			ExpectedConfig: map[string]string{
+				"range1m": `from(bucket: "?") |> range(start: -1m)`,
+				"range2m": `from(bucket: "?") |> range(start: -2m)`,
+				"range3m": `from(bucket: "?") |> range(start: -3m)`,
+				"address": "http://localhost:9999",
+				"token":   "sEcr3TT0ken",
+				"org-id":  "deadbeef",
+			},
+		},
+		{
+			Name: "http metrics",
+			Annotations: map[string]string{
+				"metric-config.external.http.json/json-key":   "$.metric.value",
+				"metric-config.external.http.json/endpoint":   "http://metric-source.source-namespace.svc.cluster.local:8000/metrics",
+				"metric-config.external.http.json/aggregator": "avg",
+			},
+			MetricName: "http",
+			MetricType: autoscalingv2.ExternalMetricSourceType,
+			ExpectedConfig: map[string]string{
+				"json-key":   "$.metric.value",
+				"endpoint":   "http://metric-source.source-namespace.svc.cluster.local:8000/metrics",
+				"aggregator": "avg",
+			},
+		},
 	} {
 		t.Run(tc.Name, func(t *testing.T) {
 			hpaMap := make(AnnotationConfigMap)
@@ -33,12 +33,7 @@ func NewAWSCollectorPlugin(sessions map[string]*session.Session) *AWSCollectorPl

 // NewCollector initializes a new skipper collector from the specified HPA.
 func (c *AWSCollectorPlugin) NewCollector(hpa *autoscalingv2.HorizontalPodAutoscaler, config *MetricConfig, interval time.Duration) (Collector, error) {
-	switch config.Metric.Name {
-	case AWSSQSQueueLengthMetric:
-		return NewAWSSQSCollector(c.sessions, config, interval)
-	}
-
-	return nil, fmt.Errorf("metric '%s' not supported", config.Metric.Name)
+	return NewAWSSQSCollector(c.sessions, hpa, config, interval)
 }

 type AWSSQSCollector struct {
@@ -47,11 +42,12 @@ type AWSSQSCollector struct {
 	region     string
 	queueURL   string
 	queueName  string
+	namespace  string
 	metric     autoscalingv2.MetricIdentifier
 	metricType autoscalingv2.MetricSourceType
 }

-func NewAWSSQSCollector(sessions map[string]*session.Session, config *MetricConfig, interval time.Duration) (*AWSSQSCollector, error) {
+func NewAWSSQSCollector(sessions map[string]*session.Session, hpa *autoscalingv2.HorizontalPodAutoscaler, config *MetricConfig, interval time.Duration) (*AWSSQSCollector, error) {
 	if config.Metric.Selector == nil {
 		return nil, fmt.Errorf("selector for queue is not specified")
 	}
@@ -85,6 +81,7 @@ func NewAWSSQSCollector(sessions map[string]*session.Session, config *MetricConf
 		interval:   interval,
 		queueURL:   aws.StringValue(resp.QueueUrl),
 		queueName:  name,
+		namespace:  hpa.Namespace,
 		metric:     config.Metric,
 		metricType: config.Type,
 	}, nil
@@ -108,7 +105,8 @@ func (c *AWSSQSCollector) GetMetrics() ([]CollectedMetric, error) {
 		}

 		metricValue := CollectedMetric{
-			Type: c.metricType,
+			Namespace: c.namespace,
+			Type:      c.metricType,
 			External: external_metrics.ExternalMetricValue{
 				MetricName:   c.metric.Name,
 				MetricLabels: c.metric.Selector.MatchLabels,
@@ -4,12 +4,17 @@ import (
 	"fmt"
 	"time"

+	log "github.com/sirupsen/logrus"
 	"github.com/zalando-incubator/kube-metrics-adapter/pkg/annotations"
 	autoscalingv2 "k8s.io/api/autoscaling/v2beta2"
 	"k8s.io/metrics/pkg/apis/custom_metrics"
 	"k8s.io/metrics/pkg/apis/external_metrics"
 )

+const (
+	typeLabelKey = "type"
+)
+
 type ObjectReference struct {
 	autoscalingv2.CrossVersionObjectReference
 	Namespace string
@@ -19,6 +24,7 @@ type CollectorFactory struct {
 	podsPlugins     pluginMap
 	objectPlugins   objectPluginMap
 	externalPlugins map[string]CollectorPlugin
+	logger          *log.Entry
 }

 type objectPluginMap struct {
@@ -39,6 +45,7 @@ func NewCollectorFactory() *CollectorFactory {
 			Named: map[string]*pluginMap{},
 		},
 		externalPlugins: map[string]CollectorPlugin{},
+		logger:          log.WithFields(log.Fields{"collector": "true"}),
 	}
 }

@@ -46,6 +53,14 @@ type CollectorPlugin interface {
 	NewCollector(hpa *autoscalingv2.HorizontalPodAutoscaler, config *MetricConfig, interval time.Duration) (Collector, error)
 }

+type PluginNotFoundError struct {
+	metricTypeName MetricTypeName
+}
+
+func (p *PluginNotFoundError) Error() string {
+	return fmt.Sprintf("no plugin found for %s", p.metricTypeName)
+}
+
 func (c *CollectorFactory) RegisterPodsCollector(metricCollector string, plugin CollectorPlugin) error {
 	if metricCollector == "" {
 		c.podsPlugins.Any = plugin
@@ -104,7 +119,7 @@ func (c *CollectorFactory) NewCollector(hpa *autoscalingv2.HorizontalPodAutoscal
 	switch config.Type {
 	case autoscalingv2.PodsMetricSourceType:
 		// first try to find a plugin by format
-		if plugin, ok := c.podsPlugins.Named[config.CollectorName]; ok {
+		if plugin, ok := c.podsPlugins.Named[config.CollectorType]; ok {
 			return plugin.NewCollector(hpa, config, interval)
 		}

@@ -115,7 +130,7 @@ func (c *CollectorFactory) NewCollector(hpa *autoscalingv2.HorizontalPodAutoscal
 	case autoscalingv2.ObjectMetricSourceType:
 		// first try to find a plugin by kind
 		if kinds, ok := c.objectPlugins.Named[config.ObjectReference.Kind]; ok {
-			if plugin, ok := kinds.Named[config.CollectorName]; ok {
+			if plugin, ok := kinds.Named[config.CollectorType]; ok {
 				return plugin.NewCollector(hpa, config, interval)
 			}

@@ -126,7 +141,7 @@ func (c *CollectorFactory) NewCollector(hpa *autoscalingv2.HorizontalPodAutoscal
 		}

 		// else try to find a default plugin for this kind
-		if plugin, ok := c.objectPlugins.Any.Named[config.CollectorName]; ok {
+		if plugin, ok := c.objectPlugins.Any.Named[config.CollectorType]; ok {
 			return plugin.NewCollector(hpa, config, interval)
 		}

@@ -134,12 +149,26 @@ func (c *CollectorFactory) NewCollector(hpa *autoscalingv2.HorizontalPodAutoscal
 			return c.objectPlugins.Any.Any.NewCollector(hpa, config, interval)
 		}
 	case autoscalingv2.ExternalMetricSourceType:
-		if plugin, ok := c.externalPlugins[config.Metric.Name]; ok {
+		// First type to get metric type from the `type` label,
+		// otherwise fall back to the legacy metric name based mapping.
+		var pluginKey string
+		if config.Metric.Selector != nil && config.Metric.Selector.MatchLabels != nil {
+			if typ, ok := config.Metric.Selector.MatchLabels[typeLabelKey]; ok {
+				pluginKey = typ
+			}
+		}
+
+		if pluginKey == "" {
+			pluginKey = config.Metric.Name
+			c.logger.Warnf("HPA %s/%s is using deprecated metric type identifier '%s'", hpa.Namespace, hpa.Name, config.Metric.Name)
+		}
+
+		if plugin, ok := c.externalPlugins[pluginKey]; ok {
 			return plugin.NewCollector(hpa, config, interval)
 		}
 	}

-	return nil, fmt.Errorf("no plugin found for %s", config.MetricTypeName)
+	return nil, &PluginNotFoundError{metricTypeName: config.MetricTypeName}
 }

 type MetricTypeName struct {
@@ -148,9 +177,10 @@ type MetricTypeName struct {
 }

 type CollectedMetric struct {
-	Type     autoscalingv2.MetricSourceType
-	Custom   custom_metrics.MetricValue
-	External external_metrics.ExternalMetricValue
+	Type      autoscalingv2.MetricSourceType
+	Namespace string
+	Custom    custom_metrics.MetricValue
+	External  external_metrics.ExternalMetricValue
 }

 type Collector interface {
@@ -160,11 +190,12 @@ type Collector interface {

 type MetricConfig struct {
 	MetricTypeName
-	CollectorName   string
+	CollectorType   string
 	Config          map[string]string
 	ObjectReference custom_metrics.ObjectReference
 	PerReplica      bool
 	Interval        time.Duration
+	MetricSpec      autoscalingv2.MetricSpec
 }

 // ParseHPAMetrics parses the HPA object into a list of metric configurations.
@@ -206,17 +237,20 @@ func ParseHPAMetrics(hpa *autoscalingv2.HorizontalPodAutoscaler) ([]*MetricConfi
 			MetricTypeName:  typeName,
 			ObjectReference: ref,
 			Config:          map[string]string{},
+			MetricSpec:      metric,
 		}

 		if metric.Type == autoscalingv2.ExternalMetricSourceType &&
 			metric.External.Metric.Selector != nil &&
 			metric.External.Metric.Selector.MatchLabels != nil {
-			config.Config = metric.External.Metric.Selector.MatchLabels
+			for k, v := range metric.External.Metric.Selector.MatchLabels {
+				config.Config[k] = v
+			}
 		}

 		annotationConfigs, present := parser.GetAnnotationConfig(typeName.Metric.Name, typeName.Type)
 		if present {
-			config.CollectorName = annotationConfigs.CollectorName
+			config.CollectorType = annotationConfigs.CollectorType
 			config.Interval = annotationConfigs.Interval
 			config.PerReplica = annotationConfigs.PerReplica
 			// configs specified in annotations takes precedence
--- a/Show More
+++ b/Show More