@cubejs-infra/post-installer

Easiest way to download files on post installation step of you npm package.

Usage example

1. First you need to define resources section under coresponding package.json file of your package.

{
    "resources": {
        "files": [{
            "host": "https://github.com/cube-js/cube/releases/download/v${version}/",
            "path": "native-${platform}-${arch}-${libc}-${libpython_or_fallback}.tar.gz",
        }]
    }
}

Additional

Downloading plain files (no extraction)

By default the downloaded file is extracted into the package directory. Whether a file is an archive is detected automatically from its mime type (resolved from the url via mime-types): application/gzip, application/x-tar and application/zip (.tar.gz, .tgz, .tar, .zip) are extracted, anything else - a .jar, a .node, a bare binary - is downloaded as is.

For a file that is not extracted you must specify dst - a destination path relative to the package directory. Missing directories are created, escaping the package directory is not allowed.

{
    "resources": {
        "files": [{
            "host": "https://repo1.maven.org/maven2/",
            "path": "org/slf4j/slf4j-api/${slf4j_version}/slf4j-api-${slf4j_version}.jar",
            "dst": "lib/slf4j.jar"
        }]
    }
}

dst supports the same variables as host & path.

Detection can be overridden with extract:

{
    "host": "https://example.com/",
    "path": "bundle.tar.gz",
    "extract": false,
    "dst": "vendor/bundle.tar.gz"
}

For archives dst is ignored (they are always extracted into the package directory).

Constraints

Variables and files supports contstraints, you can define it:

  "constraints": {
    "platform": [
      "linux"
    ],
    "arch": [
      "x64"
    ]
  }

Supported types:

• platform: win32 / darwin / linux / aix / android / freebsd / openbsd / cygwin
• arch: x64 / arm64
• platform-arch: linux-x64, etc.

Variables

You can define and use variables in path & host.

{
    "vars": {
      "libpython_or_fallback": {
        "default": "fallback",
        "value": [
          "libpython",
          [
            "3.11",
            "3.10",
            "3.9"
          ]
        ],
        "constraints": {
          "platform": [
            "linux"
          ],
          "arch": [
            "x64"
          ]
        }
      },
      "feature_or_default": {
        "default": "default",
        "value": [
          "env",
          "YOUR_ENV_NAME"
        ]
      }
    },
}

Next you can use this variable in the url via /file/${libpython_or_fallback}.tar.gz

LICENSE

Apache-2.0