cost-model/Tiltfile.opencost

load('ext://helm_resource', 'helm_resource', 'helm_repo')
load('ext://restart_process', 'docker_build_with_restart')
load('ext://secret', 'secret_create_generic')


def get_docker_platform(arch):
    if arch == "arm64":
        return "linux/arm64"
    else:
        return "linux/amd64"


def get_go_arch(arch):
    if arch == "arm64":
        return "arm64"
    else:
        return "amd64"


# run_opencost is encapsulated as a function to make import easier for running alongside kubecost.
# The `../opencost` pattern that repeats across this function is to deal with how multiple tilt
# files work - the base directory (`.`) is always relative to the Tiltfile executed and not the
# directory containing this file.
def run_opencost(options):

    docker_platform = get_docker_platform(options["arch"])
    go_arch = get_go_arch(options["arch"])
    is_cloud_integration = options["cloud_integration"] != '' and os.path.exists(options["cloud_integration"])
    is_service_key = options["service_key"] != '' and os.path.exists(options["service_key"])
    continue_flag = '--continue'
    if options["delve_continue"] == False:
        continue_flag = ''

    # Build and update opencost back end binary when code changes
    local_resource(
        name='build-costmodel',
        dir='.',
        cmd='CGO_ENABLED=0 GOOS=linux GOARCH='+go_arch+' go build -o ../opencost/cmd/costmodel/costmodel-tilt ../opencost/cmd/costmodel/main.go',
        deps=[
            '../opencost/cmd/costmodel/main.go',
            '../opencost/pkg',
        ],
        allow_parallel=True,
    )

    # Build back end docker container
    # If the binary is updated, update the running container and restart binary in dlv
    docker_build_with_restart(
        ref=options["docker_repo"]+'opencost-costmodel',
        context='../opencost',
        # remove --continue flag to make dlv wait until debugger is attached to start
        entrypoint='/go/bin/dlv exec --listen=:40000 --api-version=2 --headless=true --accept-multiclient --log '+continue_flag+' /app/main',
        dockerfile='../opencost/Dockerfile.debug',
        platform=docker_platform,
        build_args={'binary_path': './cmd/costmodel/costmodel-tilt'},
        only=[
            'cmd/costmodel/costmodel-tilt',
            'configs',
            'THIRD_PARTY_LICENSES.txt',
        ],
        live_update=[
            sync('../opencost/cmd/costmodel/costmodel-tilt', '/app/main'),
        ],
    )

    # npm install if package.json changes
    local_resource(
        name='build-npm-install',
        dir='../opencost/ui',
        cmd='npm install',
        deps=[
            '../opencost/ui/package.json',
        ],
        allow_parallel=True,
    )

    # Build FE locally when code changes
    local_resource(
        name='build-ui',
        dir='../opencost/ui',
        cmd='npx parcel build src/index.html',
        deps=[
            '../opencost/ui/src',
            '../opencost/ui/package.json',
        ],
        allow_parallel=True,
        resource_deps=['build-npm-install'],
    )

    # update container when relevant files change
    docker_build(
        ref=options["docker_repo"]+'opencost-ui',
        context='../opencost/ui',
        dockerfile='../opencost/ui/Dockerfile.debug',
        only=[
            'dist',
            'nginx.conf',
            'default.nginx.conf.template',
            'docker-entrypoint.sh',
        ],
        live_update=[
            sync('../opencost/ui/dist', '/var/www'),
        ],
    )

    values_set = [
        'opencost.ui.image.fullImageName='+options["docker_repo"]+'opencost-ui',
        'opencost.exporter.image.fullImageName='+options["docker_repo"]+'opencost-costmodel',
        'opencost.prometheus.internal.namespaceName='+k8s_namespace(),
        'opencost.exporter.debugPort=40000',
    ]

    if is_cloud_integration:
        values_set.append('opencost.cloudIntegrationSecret=cloud-integration')
        values_set.append('opencost.cloudCost.enabled=true')
    else:
        values_set.append('opencost.cloudCost.enabled=false')

    if is_cloud_integration:
        secret_create_generic(
            name='cloud-integration',
            namespace=k8s_namespace(),
            from_file=options["cloud_integration"],
            secret_type=None,
            from_env_file=None
        )

    if is_service_key:
        secret_create_generic(
            name='service-key',
            namespace=k8s_namespace(),
            from_file=options["service_key"],
            secret_type=None,
            from_env_file=None
        )

    # build yaml for deployment to k8s
    yaml = helm(
        '../opencost-helm-chart/charts/opencost',
        name='opencost',
        values=[options["helm_values"]],
        set=values_set
    )
    k8s_yaml(yaml)  # put resulting yaml into k8s

    port_forwards = [
        options['port_costmodel']+':9003',
        options['port_ui']+':9090',
        options['port_debug']+':40000',
        '8081:8081',  # MCP server port
    ]
    k8s_resource(workload='opencost', port_forwards=port_forwards)

    helm_repo('prometheus-community', 'https://prometheus-community.github.io/helm-charts')
    helm_resource(
        name='prometheus',
        chart='prometheus-community/prometheus',
        resource_deps=['prometheus-community'])
    k8s_resource(workload='prometheus', port_forwards=[options['port_prometheus']+':9090'])

    local_resource(
        name='costmodel-test',
        dir='../opencost',
        cmd='go test ./...',
        deps=[
            './pkg',
        ],
        allow_parallel=True,
        resource_deps=['opencost'],  # run tests after build to speed up deployment
    )