config.example.yaml

# Proxy server configuration
# Copy to config.yaml and modify as needed

# Server listen address
listen: ":8080"

# Public URL where package endpoints are reachable.
# Used for rewriting package metadata URLs and shown in install guide snippets
# so users know what to point their package manager at.
base_url: "http://localhost:8080"

# Timeout for individual upstream HTTP requests made by protocol handlers
# (metadata fetches, pass-through file requests). Uses Go duration syntax.
# Set to "0" to disable the timeout. Default: "30s".
# http_timeout: "30s"

# Response write deadline, including download and scan time before sending data.
# Set to "0" to disable. Default: "5m".
# write_timeout: "5m"

# Timeout for each upstream artifact download while serving requests; excludes
# scanning. Set to "0" to disable. Default: "5m". Does not limit proxy mirror.
# artifact_timeout: "5m"

# Register DELETE /api/cache and show Delete buttons on the UI's version page,
# for removing cached artifacts so they are fetched again. Has no
# authentication: restrict /api/cache and /ui at the ingress first.
# cache_delete: false

# Largest upstream artifact to fetch (e.g. "2GB"). Larger ones are refused
# and not cached. Default: unlimited.
# artifact_max_size: ""

# Memory for rewritten npm and Composer metadata, so each upstream document is
# rewritten and gzip-compressed once rather than on every request. Set to "0"
# to rewrite on every request. Default: "256MB".
# metadata_rewrite_cache_size: "256MB"

# Public URL where the web UI is reached. Defaults to base_url when unset.
# Set this separately when the UI is served on a different hostname than the
# package endpoints — for example, the UI on a public domain behind auth while
# build machines hit a Docker network alias for the package endpoints.
# ui_base_url: "https://proxy.example.com/ui"

# Attribute requests to the leftmost X-Forwarded-For entry rather than the TCP
# peer address, in the structured log, the access log and the request-source
# table on /ui/analytics.
#
# Enable this only when the proxy sits behind a load balancer or ingress that
# sets the header. Any client can send it: behind one it is the only way to see
# past the hop, in front of one it lets a caller forge its own address.
# trust_forwarded_for: false

# Show the request-source table on /ui/analytics: caller addresses, the tool
# each ran and how much each pulled.
#
# Off by default. The proxy has no authentication of its own, so leave this off
# unless /ui is gated by a reverse proxy; anyone who can reach the page can
# otherwise read the addresses of your build fleet.
# ui_request_sources: false

# List the latest failures behind each failure count on /ui/analytics (upstream,
# storage, integrity, health probe and scan errors): the package, its upstream
# URL or storage path, and the error. URLs lose credentials and query strings.
#
# Off by default, for the same reason as ui_request_sources.
# ui_failure_details: false

# Artifact storage configuration
storage:
  # Storage backend URL
  # Supported schemes:
  #   - file:///path/to/dir - Local filesystem (default)
  #   - s3://bucket-name - Amazon S3
  #   - s3://bucket?endpoint=http://localhost:9000 - S3-compatible (MinIO)
  #   - gs://bucket-name - Google Cloud Storage
  #   - azblob://container-name - Azure Blob Storage
  #
  # For S3, configure credentials via environment variables:
  #   AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_REGION
  #
  # For GCS, authentication uses Application Default Credentials. On GKE with
  # Workload Identity, bind the Kubernetes service account to a Google service
  # account that has roles/storage.objectAdmin on the bucket. No extra config
  # is needed in this file. For local development, run:
  #   gcloud auth application-default login
  # If direct_serve is enabled, the service account also needs
  # roles/iam.serviceAccountTokenCreator on itself so the IAM Credentials
  # signBlob API can sign URLs without a private key.
  url: ""

  # Local filesystem path (used when url is empty)
  # Deprecated: Use url with file:// scheme instead
  path: "./cache/artifacts"

  # Maximum cache size (e.g., "10GB", "500MB")
  # When exceeded, least recently used artifacts are evicted
  # Empty or "0" means unlimited
  max_size: ""

  # Evict artifacts that have not been served for longer than a duration
  # ("30d", "72h"), independent of max_size. Resolution order: package rule,
  # then ecosystem rule, then default. "0" or empty means never evict by age.
  # The default only applies to ecosystems that support retention; naming an
  # ecosystem or package that does not is a configuration error. See
  # docs/configuration.md for the supported ecosystems.
  # Generic downloads require an explicit ecosystem or package rule;
  # they never inherit default, since an upstream release may disappear.
  retention:
    default: ""
    # ecosystems:
    #   npm: "30d"
    #   generic: "30d"
    # packages:
    #   "pkg:npm/lodash": "0"
    #   "pkg:generic/owner%2Frepo": "90d"
    # How often to look for expired artifacts; at least "1m".
    sweep_interval: "10m"

  # Store fetched artifacts. Set to false to stream every download from
  # upstream without storing it; metadata filtering, cooldown and the
  # denylist still apply. Useful when another cache sits in front of the
  # proxy. false is incompatible with direct_serve, scanning, mirror_api and
  # mirror.schedules.
  cache_artifacts: true

  # Redirect cached artifact downloads to presigned storage URLs (HTTP 302)
  # instead of streaming through the proxy. Only effective for S3, GCS, and Azure.
  # Leave disabled if clients reach the proxy through an authenticating gateway,
  # since presigned URLs bypass it.
  direct_serve: false

  # How long presigned URLs remain valid (e.g. "5m", "1h"). Default: "15m".
  direct_serve_ttl: "15m"

  # Public base URL to substitute into presigned URLs. Set this when the
  # proxy reaches storage at an internal address (127.0.0.1, a Docker
  # service name) but clients must use a public hostname. Only scheme and
  # host are used; the signed path and query are preserved. For S3/MinIO
  # the reverse proxy at this address must forward requests with the
  # internal Host header or the SigV4 signature will not validate.
  # direct_serve_base_url: "https://minio.example.com"

# Database configuration
database:
  # Database driver: "sqlite" (default) or "postgres"
  driver: "sqlite"

  # SQLite database file path (used when driver is "sqlite")
  path: "./cache/proxy.db"

  # PostgreSQL connection URL (used when driver is "postgres")
  # Example: "postgres://user:password@localhost:5432/proxy?sslmode=disable"
  url: ""

  # How often cache hit counts and last-access times are written, batched in
  # one transaction. "0" writes each hit as it happens.
  hit_flush_interval: "1s"

# Logging configuration
log:
  # Minimum log level: "debug", "info", "warn", "error"
  level: "info"

  # Log format: "text" or "json"
  format: "text"

# JSONL access log. Leave path empty to disable it.
access_log:
  path: ""

# Upstream URLs for built-in routes and authentication
upstream:
  # Hosts allowed to resolve to private, ULA, or CGNAT addresses
  allow_private_hosts: []

  # Permit upstream requests and redirects to loopback addresses
  allow_loopback: false

  # npm registry URL
  npm: "https://registry.npmjs.org"
  # Always request full npm packuments so served metadata carries publish
  # times ("time" map) even when cooldown is disabled. Needed by clients that
  # gate on publish age, e.g. Yarn's npmMinimalAgeGate. Default: false.
  # npm_full_metadata: true

  # npm packages served only from a private registry, by name pattern.
  # Matching packages are never looked up on the npm registry above.
  # npm_routes:
  #   "@example/*": "https://npm.example.com/registry"

  # Cargo sparse index URL
  cargo: "https://index.crates.io"

  # Cargo crate download URL
  cargo_download: "https://static.crates.io/crates"

  # RubyGems registry URL
  gem: "https://rubygems.org"

  # Go module proxy URL
  go: "https://proxy.golang.org"

  # Hex repository URL
  hex: "https://repo.hex.pm"

  # Hex API URL used for package timestamps
  hex_api: "https://hex.pm"

  # pub registry URL
  pub: "https://pub.dev"

  # PyPI index and API URL
  pypi: "https://pypi.org"

  # PyPI package download URL
  pypi_download: "https://files.pythonhosted.org"

  # Maven repository URL (used by /maven endpoint)
  maven: "https://repo1.maven.org/maven2"

  # Additional Maven repositories, served at /maven/{name}/. A name must not
  # be the start of a group ID (such as "org" or "tools"), since it would hide
  # those groups in the default repository.
  # maven_repositories:
  #   grails: "https://repo.grails.org/grails/restricted"

  # Gradle Plugin Portal Maven URL (fallback for plugin marker artifacts)
  gradle_plugin_portal: "https://plugins.gradle.org/m2"

  # NuGet API URL
  nuget: "https://api.nuget.org"

  # NuGet search API URL
  nuget_search: "https://azuresearch-usnc.nuget.org"

  # Packagist API URL
  composer: "https://packagist.org"

  # Packagist repository URL
  composer_repository: "https://repo.packagist.org"

  # Composer packages served only from a private repository, by name pattern.
  # Matching packages are never looked up on composer_repository.
  # composer_routes:
  #   "example/*": "https://composer.example.com/packages"

  # Conan registry URL
  conan: "https://center.conan.io"

  # Chef Supermarket URL (used by /chef/). Point it at a private
  # Supermarket to proxy that instead.
  chef: "https://supermarket.chef.io"

  # Conda channel base URL
  conda: "https://conda.anaconda.org"

  # CRAN mirror URL
  cran: "https://cloud.r-project.org"

  # Julia package server URL
  julia: "https://pkg.julialang.org"

  # Swift Package Registry URL (used by /swift endpoint)
  swift: "https://tuist.dev/api/registry/swift"

  # Default OCI registry URL for unprefixed /v2 requests
  oci_default: "https://registry-1.docker.io"

  # Debian/APT repository URL (used by /debian endpoint)
  debian: "http://deb.debian.org/debian"

  # Additional Debian/APT archives, served at /debian/{name}/.
  # The names "pool" and "dists" are reserved for the main archive's own paths.
  debian_repositories:
    security: "https://security.debian.org/debian-security"

  # RPM repository URL (used by /rpm endpoint)
  rpm: "https://dl.fedoraproject.org/pub/fedora/linux"

  # Homebrew JSON API URL (used by /homebrew endpoint)
  homebrew_api: "https://formulae.brew.sh/api"

  # Homebrew artifact registry URL (used for /v2/homebrew/core requests)
  homebrew_artifact: "https://ghcr.io"

  # Named HTTP Helm chart repositories (used by /helm/{name}/)
  # helm:
  #   bitnami: "https://charts.bitnami.com/bitnami"

  # Named OCI registries. Use the upstream/{name}/ repository prefix, e.g.
  # oci://proxy.example.com/upstream/ghcr/owner/chart.
  # oci:
  #   ghcr: "https://ghcr.io"

  # Registries a named OCI upstream mirrors, e.g. when ghcr above points at
  # an Artifactory remote of ghcr.io. containerd mirror requests whose ns
  # parameter names one of these hosts are served by that upstream.
  # oci_mirrors:
  #   ghcr: ["ghcr.io"]

  # Named Alpine APK repositories (used by /apk/{name}/).
  # Defaults to {"alpine": "https://dl-cdn.alpinelinux.org/alpine"} when empty;
  # configuring any entry replaces that default.
  # apk:
  #   alpine: "https://dl-cdn.alpinelinux.org/alpine"
  #   private: "https://apk.example.com"

  # Named Arch Linux pacman mirrors (used by /arch/{name}/).
  # Defaults to {"archlinux": "https://geo.mirror.pkgbuild.com"} when empty;
  # configuring any entry replaces that default. Arch Linux ARM needs a
  # regional HTTPS mirror of your choice, not the mirror.archlinuxarm.org
  # redirector.
  # arch:
  #   archlinux: "https://geo.mirror.pkgbuild.com"
  #   archlinuxarm: "https://<region>.mirror.archlinuxarm.org"

  # Named FreeBSD pkg mirrors (used by /freebsd/{name}/), for ports and
  # pkgbase repositories alike.
  # Defaults to {"freebsd": "https://pkg.freebsd.org"} when empty;
  # configuring any entry replaces that default.
  # freebsd:
  #   freebsd: "https://pkg.freebsd.org"
  #   poudriere: "https://packages.example.com"

  # Named generic HTTP upstreams (used by /generic/{name}/). The remaining
  # request path and query are appended to the upstream URL. GitHub release
  # assets ({owner}/{repo}/releases/download/{tag}/{asset}) are cached
  # immutably; other paths use the metadata cache with stale-on-error.
  # generic:
  #   github: "https://github.com"
  #   github-api: "https://api.github.com"
  #   apache: "https://archive.apache.org"

  # Paths a generic upstream may serve, as path.Match patterns for the path
  # after /generic/{name}/; a pattern ending in /** also matches everything
  # nested below its prefix. Other paths answer 404. Required for an upstream
  # that upstream.auth has credentials for, such as a GitHub token for
  # api.github.com; use a fine-grained token with read-only access to public
  # repositories.
  # generic_paths:
  #   github-api:
  #     - "repos/*/*/releases"
  #     - "repos/*/*/releases/**"
  #     - "repos/*/*/tags"

  # Version-pinned paths of generic upstreams, cached immutably like GitHub
  # release assets. Each pattern must match the whole path after
  # /generic/{name}/ and have `version` and `file` named groups; an optional
  # `name` group names the package.
  # generic_artifacts:
  #   apache:
  #     - 'dist/(?P<name>maven)/maven-3/(?P<version>[^/]+)/binaries/(?P<file>[^/]+)'

  # Named Git servers (used by /git/{name}/{repo}), served read-only from
  # cached bare repositories. repos limits which repositories may be served
  # and is required when upstream.auth has credentials for the server.
  # git:
  #   github: "https://github.com"
  #   wikimedia:
  #     url: "https://gerrit.wikimedia.org/r"
  #     repos: ["mediawiki/**"]

  # Authentication for upstream registries
  # Keys are absolute URL scopes. Scheme, host, effective port, and path
  # segment boundaries must match; the longest matching scope wins.
  # Values can reference environment variables using ${VAR_NAME} syntax.
  #
  # Supported auth types:
  #   - bearer: Authorization header with Bearer token
  #   - basic: Authorization header with Basic auth (username:password)
  #   - header: Custom header name and value
  #   - ecr: AWS ECR auto-refreshing token via the AWS SDK credential chain
  auth:
    # Example: npm with bearer token
    # "https://registry.npmjs.org":
    #   type: bearer
    #   token: "${NPM_TOKEN}"

    # Example: GitHub npm registry
    # "https://npm.pkg.github.com":
    #   type: bearer
    #   token: "${GITHUB_TOKEN}"

    # Example: PyPI with basic auth
    # "https://pypi.org":
    #   type: basic
    #   username: "__token__"
    #   password: "${PYPI_TOKEN}"

    # Example: Custom header for private registry
    # "https://maven.mycompany.com":
    #   type: header
    #   header_name: "X-Auth-Token"
    #   header_value: "${MAVEN_TOKEN}"

    # Example: private AWS ECR registry (12h tokens auto-refreshed via
    # ecr:GetAuthorizationToken; credentials come from the AWS SDK default
    # chain, so IRSA / instance profiles / AWS_* env vars all work; the region
    # is inferred from the private ECR hostname)
    # "https://123456789012.dkr.ecr.eu-west-1.amazonaws.com":
    #   type: ecr

# Git repository cache, used when upstream.git is set
# git:
#   cache_dir: ./cache/git   # local disk, used by this process only
#   max_size: ""             # evict least recently used repositories past this
#   max_repo_size: 5GB       # refuse a repository that grows past this
#   refresh_wait: 5s         # then serve the cached copy if the upstream check is slow
#   stale_max_age: 24h       # never serve a copy not checked for this long

# Gradle HttpBuildCache configuration
gradle:
  build_cache:
    # PUT uploads are rejected by default; set to false on the instance
    # your CI jobs upload to
    read_only: true

    # Maximum accepted Gradle cache upload body size
    # Required and must be > 0
    max_upload_size: "100MB"

    # Evict entries older than this age (set to "0" to disable age-based eviction)
    max_age: "168h"

    # Cap total Gradle cache size; oldest entries are deleted first
    # ("0" disables size-based eviction)
    # max_size: "20GB"

    # How often eviction runs when max_age or max_size is set
    sweep_interval: "10m"

# Pushing package archives to /api/hosted (disabled by default).
# A pushed version replaces the upstream one for every client, so a token is
# required to push and delete.
# hosted:
#   enabled: true
#   token: "${PROXY_HOSTED_TOKEN}"
#   max_upload_size: "100MB"
#   # Namespaces served from pushed packages only; the upstream is never asked
#   # about them, so nobody can mix in versions by publishing the same name.
#   npm_scopes: ["@acme"]
#   composer_vendors: ["acme"]

# Re-mirror container image tags on a schedule, so a moved tag is picked up
# even when nobody pulls it. An unchanged tag costs one HEAD request.
# mirror:
#   schedules:
#     - images: ["pkg:docker/library/alpine@3.20", "pkg:docker/library/nginx@stable"]
#       interval: "6h"
#       platforms: ["linux/amd64"]

# Health endpoint configuration.
health:
  # Minimum time between storage backend probes.
  # The /health endpoint runs a write/read/verify/delete round-trip
  # against the configured storage backend and caches the result for
  # this interval. Set to "0" to probe on every request.
  # Default: "30s".
  storage_probe_interval: "30s"

# Version cooldown configuration
# Hides package versions published too recently, giving the community time
# to spot malicious releases before they're pulled into projects.
# Supported durations: "7d" (days), "48h" (hours), "30m" (minutes), "0" (disabled)
cooldown:
  # Global default cooldown for all ecosystems
  # default: "3d"

  # Per-ecosystem overrides
  # ecosystems:
  #   npm: "7d"
  #   cargo: "0"

  # Per-package overrides (keyed by PURL). Keys are normalized, so npm scopes
  # may use either @scope or the canonical %40scope form.
  # packages:
  #   "pkg:npm/lodash": "0"
  #   "pkg:npm/@babel/core": "14d"

  # Per-package glob overrides, after exact packages and before ecosystems.
  # package_patterns:
  #   "pkg:npm/@example/*": "0"

# Exact versions to deny, independently of cooldown and scanning.
# Metadata filtering: npm, PyPI and Cargo. Shared artifact downloads, including
# cache hits, are blocked with 403; signed APT metadata is left unchanged.
# Use versioned PURLs without qualifiers/subpaths. Restart after changes.
# denylist:
#   packages:
#     - "pkg:pypi/requests@2.31.0"
#     - "pkg:cargo/some-crate@1.2.3"
#     - "pkg:npm/%40scope/example@4.5.6"

# Pre-cache artifact scanning. When enabled, every artifact is staged into
# storage and scanned by the configured scanners before it is committed to
# the cache and served to clients. Scanners never receive artifact bytes
# directly — each notify call includes a short-lived signed URL that the
# scanner fetches itself, so the proxy stays agnostic to trivy/ClamAV/Wiz/
# any custom service. Scanners run concurrently; the first "block" verdict
# wins and cancels the rest.
# scanning:
#   enabled: true
#   fail_open: false
#   timeout: 30s
#
#   # Authenticates pull requests to the internal scan-fetch route.
#   # Required whenever enabled is true. Supports ${VAR_NAME} expansion.
#   signing_key: ${PROXY_SCANNING_SIGNING_KEY}
#
#   # Address scanners use to reach this proxy to pull staged artifacts.
#   # Defaults to base_url.
#   # fetch_base_url: http://proxy.internal:8080
#
#   scanners:
#     - name: clamav
#       url: http://clamav-adapter:8080/scan
#       mode: block
#     - name: trivy
#       url: http://trivy-adapter:8081/scan
#       mode: monitor
#       ecosystems: [npm, pypi]