Get

Retrieve resources from a GitHub API endpoint.

Usage

var get = require( '@stdlib/_tools/github/get' );

get( [options,] clbk )

Retrieves resources from a GitHub API endpoint.

get( onResponse );

function onResponse( error, data, info ) {
    // Check for rate limit info...
    if ( info ) {
        console.error( 'Limit: %d', info.limit );
        console.error( 'Remaining: %d', info.remaining );
        console.error( 'Reset: %s', (new Date( info.reset*1000 )).toISOString() );
    }
    if ( error ) {
        if ( error instanceof Error ) {
            throw error;
        }
        console.error( error.message );
    } else {
        console.log( JSON.stringify( data ) );
    }
}

The function accepts the following options:

• protocol: request protocol. Default: 'https'.
• hostname: endpoint hostname. Default: 'api.github.com'.
• port: endpoint port. Default: 443 (https) or 80 (http).
• pathname: resource pathname; e.g., /user/repos. Default: '/'.
• page: resource page. Default: 1.
• last_page: last resource page. If provided, the function will use link headers to resolve all pages starting from page. Default: 1.
• per_page: page size. Default: 100.
• query: params portion of a query string; e.g., beep=boop&a=b. This should not include page or per_page query params. Default: ''.
• token: GitHub access token.
• accept: media type. Default: 'application/vnd.github.moondragon+json'.
• useragent: user agent string.

To specify a particular resource endpoint, set the pathname option.

var opts = {
    'pathname': '/user/repos'
};

get( opts, onResponse );

function onResponse( error, data, info ) {
    // Check for rate limit info...
    if ( info ) {
        console.error( 'Limit: %d', info.limit );
        console.error( 'Remaining: %d', info.remaining );
        console.error( 'Reset: %s', (new Date( info.reset*1000 )).toISOString() );
    }
    if ( error ) {
        if ( error instanceof Error ) {
            throw error;
        }
        console.error( error.message );
    } else {
        console.log( JSON.stringify( data ) );
    }
}

To authenticate with an endpoint, set the token option.

var opts = {
    'token': 'tkjorjk34ek3nj4!'
};

get( opts, onResponse );

function onResponse( error, data, info ) {
    // Check for rate limit info...
    if ( info ) {
        console.error( 'Limit: %d', info.limit );
        console.error( 'Remaining: %d', info.remaining );
        console.error( 'Reset: %s', (new Date( info.reset*1000 )).toISOString() );
    }
    if ( error ) {
        if ( error instanceof Error ) {
            throw error;
        }
        console.error( error.message );
    } else {
        console.log( JSON.stringify( data ) );
    }
}

By default, the function only requests a single page of results. To resolve multiple pages, set the last_page option.

// Resolves pages 2-5...
var opts = {
    'page': 2,
    'last_page': 5
};

get( opts, onResponse );

function onResponse( error, data, info ) {
    // Check for rate limit info...
    if ( info ) {
        console.error( 'Limit: %d', info.limit );
        console.error( 'Remaining: %d', info.remaining );
        console.error( 'Reset: %s', (new Date( info.reset*1000 )).toISOString() );
    }
    if ( error ) {
        if ( error instanceof Error ) {
            throw error;
        }
        console.error( error.message );
    } else {
        console.log( JSON.stringify( data ) );
    }
}

To specify that all pages beginning from page be resolved, set the last_page option to 'last'.

// Resolve all pages...
var opts = {
    'last_page': 'last'
};

get( opts, onResponse );

function onResponse( error, data, info ) {
    // Check for rate limit info...
    if ( info ) {
        console.error( 'Limit: %d', info.limit );
        console.error( 'Remaining: %d', info.remaining );
        console.error( 'Reset: %s', (new Date( info.reset*1000 )).toISOString() );
    }
    if ( error ) {
        if ( error instanceof Error ) {
            throw error;
        }
        console.error( error.message );
    } else {
        console.log( JSON.stringify( data ) );
    }
}

To specify a user agent, set the useragent option.

var opts = {
    'useragent': 'hello-github!'
};

get( opts, onResponse );

function onResponse( error, data, info ) {
    // Check for rate limit info...
    if ( info ) {
        console.error( 'Limit: %d', info.limit );
        console.error( 'Remaining: %d', info.remaining );
        console.error( 'Reset: %s', (new Date( info.reset*1000 )).toISOString() );
    }
    if ( error ) {
        if ( error instanceof Error ) {
            throw error;
        }
        console.error( error.message );
    } else {
        console.log( JSON.stringify( data ) );
    }
}

get.factory( options, clbk )

Returns a function which can be repeatedly invoked to retrieve resources from a GitHub API endpoint.

function onResponse( error, data, info ) {
    // Check for rate limit info...
    if ( info ) {
        console.error( 'Limit: %d', info.limit );
        console.error( 'Remaining: %d', info.remaining );
        console.error( 'Reset: %s', (new Date( info.reset*1000 )).toISOString() );
    }
    if ( error ) {
        if ( error instanceof Error ) {
            throw error;
        }
        console.error( error.message );
    } else {
        console.log( JSON.stringify( data ) );
    }
}

var opts = {
    'pathname': '/user/repos',
    'last_page': 'last',
    'token': 'tkjorjk34ek3nj4!'
};

var getRepos = get.factory( opts, onResponse );

getRepos();
getRepos();
getRepos();
// ...

The method accepts the same options as get() above.

Notes

• If an application-level error is encountered while initially querying an endpoint (e.g., no network connection, malformed request, etc), that error is returned immediately to the provided callback.

• Response data will either be an object or an object array. If multiple pages are resolved, response data is always an object array.

• The last_page option is honored as long as the option value does not exceed the maximum number of available pages.

• Rate limit information includes the following:

  • limit: maximum number of requests a consumer is permitted to make per hour.
  • remaining: number of remaining requests.
  • reset: time at which the current rate limit window resets in UTC seconds.

Examples

var get = require( '@stdlib/_tools/github/get' );

var opts = {
    'hostname': 'api.github.com',
    'pathname': '/user/repos',
    'useragent': 'my-unique-agent',
    'accept': 'application/vnd.github.moondragon+json',
    'token': 'tkjorjk34ek3nj4!',
    'last_page': 'last'
};

get( opts, onResponse );

function onResponse( error, data, info ) {
    if ( info ) {
        console.error( info );
    }
    if ( error ) {
        if ( error instanceof Error ) {
            throw error;
        }
        console.error( error.message );
    } else {
        console.log( data );
    }
}

Note: in order to run the example, you will need to obtain an access token and modify the token option accordingly.

---

CLI

Usage

Usage: ghget [options] 

Options:

  -h,   --help            Print this message.
  -V,   --version         Print the package version.
        --protocol proto  Request protocol. Default: https.
        --hostname host   Hostname. Default: api.github.com.
  -p,   --port port       Port. Default: 443 (https) or 80 (http).
        --pathname path   Resource pathname. Default: '/'.
        --token token     GitHub access token.
        --accept type     Media type. Default: application/vnd.github.v3+json.
  --ua, --useragent ua    User agent.
        --page page       Resource page. Default: 1.
        --last_page page  Last resource page to resolve. Default: 1.
        --per_page size   Page size. Default: 100.
  --qs, --query qs        Params portion of a query string. 

Notes

• In addition to the token option, the token may also be specified by a GITHUB_TOKEN environment variable. The command-line option always takes precedence.
• Requested resources are written to stdout.
• Rate limit information is written to stderr.

Examples

Setting the access token using the command-line option:

$ DEBUG=* ghget --token <token> --pathname '/user/repos'
# => '[{...},{...},...]'

Setting the access token using an environment variable:

$ DEBUG=* GITHUB_TOKEN=<token> ghget --pathname '/user/repos'
# => '[{...},{...},...]'