#!/bin/bash
# shellcheck disable=SC2034,SC2153,SC2155,SC2164

# Copyright Istio Authors. All Rights Reserved.
#
# 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.

####################################################################################################
# WARNING: THIS IS AN AUTO-GENERATED FILE, DO NOT EDIT. PLEASE MODIFY THE ORIGINAL MARKDOWN FILE:
#          docs/tasks/observability/metrics/customize-metrics/index.md
####################################################################################################

! read -r -d '' snip_enable_custom_metrics_1 <<\ENDSNIP
apiVersion: install.istio.io/v1alpha1
kind: IstioOperator
spec:
  values:
    telemetry:
      v2:
        prometheus:
          configOverride:
            inboundSidecar:
              disable_host_header_fallback: false
            outboundSidecar:
              disable_host_header_fallback: false
            gateway:
              disable_host_header_fallback: true
ENDSNIP

! read -r -d '' snip_enable_custom_metrics_2 <<\ENDSNIP
apiVersion: install.istio.io/v1alpha1
kind: IstioOperator
spec:
  values:
    telemetry:
      v2:
        prometheus:
          configOverride:
            inboundSidecar:
              metrics:
                - name: requests_total
                  dimensions:
                    destination_port: string(destination.port)
                    request_host: request.host
            outboundSidecar:
              metrics:
                - name: requests_total
                  dimensions:
                    destination_port: string(destination.port)
                    request_host: request.host
            gateway:
              metrics:
                - name: requests_total
                  dimensions:
                    destination_port: string(destination.port)
                    request_host: request.host
ENDSNIP

! read -r -d '' snip_enable_custom_metrics_3 <<\ENDSNIP
apiVersion: apps/v1
kind: Deployment
spec:
  template: # pod template
    metadata:
      annotations:
        sidecar.istio.io/extraStatTags: destination_port,request_host
ENDSNIP

! read -r -d '' snip_enable_custom_metrics_4 <<\ENDSNIP
meshConfig:
  defaultConfig:
    extraStatTags:
     - destination_port
     - request_host
ENDSNIP

snip_verify_the_results_1() {
curl "http://$GATEWAY_URL/productpage"
}

snip_verify_the_results_2() {
kubectl exec "$(kubectl get pod -l app=productpage -o jsonpath='{.items[0].metadata.name}')" -c istio-proxy -- curl -sS 'localhost:15000/stats/prometheus' | grep istio_requests_total
}

! read -r -d '' snip_use_expressions_for_values_1 <<\ENDSNIP
has(request.host) ? request.host : "unknown"
ENDSNIP