"userAgentBuildVersion": {
            "version": {
              "majorNumber": 1,
              "minorNumber": 18,
              "patch": 3
            },
            "metadata": {
              "build.type": "RELEASE",
              "revision.sha": "436f365a8007cd8a13a9f1321e7cce94bcc8883e",
              "revision.status": "Clean",
              "ssl.version": "BoringSSL"
            }
          }
        }
      }

		if err != nil {
			return fmt.Errorf("could not build metrics for workload '%s': %v", workload, err)
		}

		printMetrics(c.OutOrStdout(), sm)
	}
	return nil
}

func prometheusAPI(address string) (promv1.API, error) {
	promClient, err := api.NewClient(api.Config{Address: address})
	if err != nil {
		return nil, fmt.Errorf("could not build prometheus client: %v", err)
	}

//go:build linux
// +build linux

// Copyright Istio 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,

ISTIO_ENVOY_VERSION=${ISTIO_ENVOY_VERSION:-$1}
ISTIO_ENVOY_LINUX_VERSION=${ISTIO_ENVOY_LINUX_VERSION:-${ISTIO_ENVOY_VERSION}}
ISTIO_ENVOY_BASE_URL=${ISTIO_ENVOY_BASE_URL:-https://storage.googleapis.com/istio-build/proxy}
ISTIO_ENVOY_RELEASE_URL=${ISTIO_ENVOY_RELEASE_URL:-${ISTIO_ENVOY_BASE_URL}/envoy-alpha-${ISTIO_ENVOY_LINUX_VERSION}.tar.gz}

1. Config ingestion (inputs to the system)
1. Config translation
1. Config serving (XDS)

### Config Ingestion

Istio reads from over 20 different resources types, and aggregates them together to build the proxy configuration. These resources can be sourced from Kubernetes (via watches), files, or over xDS; Kubernetes is by far the most common usage, though.

Primarily for historical reasons, ingestion is split into a few components.

parse_KUBECONFIG "${KUBECONFIG}"
if [[ "${FOR_BUILD_CONTAINER:-0}" -eq "1" ]]; then
  KUBECONFIG="${container_kubeconfig%?}"
fi

# LOCAL_OUT should point to architecture where we are currently running versus the desired.
# This is used when we need to run a build artifact during tests or later as part of another
# target.
if [[ "${FOR_BUILD_CONTAINER:-0}" -eq "1" ]]; then
  # Override variables with container specific

{
  "name": "istio build-tools",
  "image": "gcr.io/istio-testing/build-tools:master-b0f2fd3b4240c8178b14de4689d0e663e11868ff",
  "privileged": true,
  "remoteEnv": {
    "USE_GKE_GCLOUD_AUTH_PLUGIN": "True",
    "BUILD_WITH_CONTAINER": "0",
    "CARGO_HOME": "/home/.cargo",
    "RUSTUP_HOME": "/home/.rustup"
  },
  "features": {
    "ghcr.io/devcontainers/features/docker-outside-of-docker:1": {},
    "ghcr.io/mpriscella/features/kind:1": {}
  },

apiVersion: v1
name: istio-egress
# This version is never actually shipped. istio/release-builder will replace it at build-time
# with the appropriate version
version: 1.0.0
appVersion: 1.0.0
description: Helm chart for deploying Istio gateways
keywords:
  - istio
  - egressgateway
  - gateways
sources:
  - https://github.com/istio/istio
engine: gotpl

apiVersion: v1
name: istiod
# This version is never actually shipped. istio/release-builder will replace it at build-time
# with the appropriate version
version: 1.0.0
appVersion: 1.0.0
tillerVersion: ">=2.7.2"
description: Helm chart for istio control plane
keywords:
  - istio
  - istiod
  - istio-discovery
sources:
  - https://github.com/istio/istio
engine: gotpl

		})
	}
}

func TestMetrics(t *testing.T) {
	cases := []testutil.TestCase{
		{ // case 0
			Args:           strings.Split("details", " "),
			ExpectedRegexp: regexp.MustCompile("could not build metrics for workload"),
			WantException:  true,
		},
	}

	ctx := cli.NewFakeContext(&cli.NewFakeContextOption{
		IstioNamespace: "istio-system",
	})
	client, err := ctx.CLIClient()
	if err != nil {