tarm

Tarmount handler plugin for hapi.js.

tarm provides a new tarmount handler method for serving the contents of tar files using @hapi/inert.

Examples

tarm enables a number of common use cases for serving static assets.

Static file server

The following creates a basic static file server that can be used to serve content from the site.tar file on port 3000:

const Path = require('path');

const Hapi = require('@hapi/hapi');
const Inert = require('@hapi/inert');
const Tarm = require('tarm');

const server = Hapi.Server({ port: 3000 });

const provision = async () => {

    await server.register([Inert, Tarm]);

    server.route({
        method: 'GET',
        path: '/{param*}',
        handler: {
            tarmount: {
                path: Path.join(__dirname, 'site.tar')
            }
        }
    });

    await server.start();

    console.log('Server running at:', server.info.uri);
};

provision();

Usage

After registration, this plugin enables the 'tarmount' route handler. Note that @hapi/inert is required to be registered as well. Eg:

await server.register([Inert, Tarm]);

The tarmount handler

Generates a directory endpoint for serving static content from a tar file. Routes using the directory handler must include a path parameter at the end of the path string (e.g. /path/to/somewhere/{param} where the parameter name does not matter). The path parameter can use any of the parameter options (e.g. {param} for one level files only, {param?} for one level files or the directory root, {param*} for any level, or {param*3} for a specific level). If additional path parameters are present, they are ignored for the purpose of selecting the tar file resource. The tarmount handler is an object with the following options:

• path - (required) the tar file path (relative paths are resolved based on the route files configuration). Value can be:
  • a single path string pointing to the tar file.
  • an array of path strings. Each path will be attempted in order until a match is found (by following the same process as the single path string).
  • a function with the signature function(request) which returns the path string or an array of path strings. Any thrown error is passed back to the client in the response.
• showHidden - optional boolean, determines if hidden files will be shown and served. Defaults to false.
• etagMethod - specifies the method used to calculate the ETag header response. Available values:
  • 'hash' - SHA1 sum of the file contents, suitable for distributed deployments. Default value.
  • 'simple' - Hex encoded size and modification date, suitable when files are stored on a single server.
  • false - Disable ETag computation.