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# NAME

Apache2::API - Apache2 API Framework

# SYNOPSIS

    use Apache2::API
    # To import in your namespace
    # use Apache2::API qw( :common :http );

    # $r is an Apache2::RequestRec object that you can get from within an handler or 
    # with Apache2::RequestUtil->request
    my $api = Apache2::API->new( $r, compression_threshold => 204800 ) ||
        die( Apache2::API->error );
    # or:
    my $api = Apache2::API->new( apache_request => $r, compression_threshold => 204800 ) ||
        die( Apache2::API->error );

    # or even inside your mod_perl script/cgi:
    #!/usr/bin/perl
    use strict;
    use warnings;
    use Apache2::API;

    my $r = shift( @_ );
    my $api = Apache2::API->new( $r );
    # for example:
    return( $api->reply( Apache2::Const::HTTP_OK => { message => "Hello world" } ) );

    my $r = $api->apache_request;
    return( $api->bailout({
        message => "Oops",
        code => Apache2::Const::BAD_REQUEST,
        public_message => "An unexpected error occurred.",
    }) );
    # or
    return( $api->bailout( @some_reasons ) );

    # 100kb
    $api->compression_threshold(102400);
    my $decoded = $api->decode_base64( $b64_string );
    my $ref = $api->decode_json( $json_data );
    my $decoded = $api->decode_url;
    my $perl_utf8 = $api->decode_utf8( $data );
    my $b64_string = $api->encode_base64( $data );
    my $json_data = $api->encode_json( $ref );
    my $encoded = $api->encode_url( $uri );
    my $utf8 = $api->encode_utf8( $data );
    my $uuid = $api->generate_uuid;
    my $auth = $api->get_auth_bearer;
    my $handlers = $api->get_handlers;
    my $dt = $api->header_datetime( $http_datetime );
    my $bool = $api->is_perl_option_enabled;
    # JSON object
    my $json = $api->json( pretty => 1, sorted => 1, relaxed => 1 );
    my $lang = $api->lang( 'en_GB' );
    # en_GB
    my $lang = $api->lang_unix;
    # en-GB
    my $lang = $api->lang_web;
    $api->log_error( "Oops" );
    $api->print( @some_data );
    $api->push_handlers( $name => $code_reference );
    return( $api->reply( Apache2::Const::HTTP_OK => {
        message => "All good!",
        # arbitrary property
        client_id => "efe4bcf3-730c-4cb2-99df-25d4027ec404",
        # special property
        cleanup => sub
        {
            # Some code here to be executed after the reply is sent out to the client.
        }
    }) );
    # Apache2::API::Request
    my $req = $api->request;
    # Apache2::API::Response
    my $req = $api->response;
    my $server = $api->server;
    my $version = $api->server_version;
    $api->set_handlers( $name => $code_reference );
    $api->warn( @some_warnings );

    my $hash = apr1_md5( $clear_password );
    my $hash = apr1_md5( $clear_password, $salt );
    my $ht = $api->htpasswd( $clear_password );
    my $ht = $api->htpasswd( $clear_password, salt => $salt );
    my $hash = $ht->hash;
    say "Does our password match ? ", $ht->matches( $user_clear_password ) ? "yes" : "not";

# VERSION

    v0.5.1

# DESCRIPTION

This module provides a comprehensive, powerful, yet simple framework to access [Apache mod\_perl's API](https://perl.apache.org/docs/2.0/api/) and documented appropriately.

Apache mod\_perl is an awesome framework, but quite complexe with a steep learning curve and methods all over the place. So much so that [they have developed a module dedicated to find appropriate methods](https://perl.apache.org/docs/2.0/user/coding...

# METHODS

## new

    my $api = Apache2::API->new( $r, $hash_ref_of_options );
    # or
    my $api = Apache2::API->new( apache_request => $r, compression_threshold => 102400 );

This initiates the package and takes an [Apache2::RequestRec](https://metacpan.org/pod/Apache2%3A%3ARequestRec) object and an hash or hash reference of parameters, or only an hash or hash reference of parameters:

- `apache_request`

    See ["apache\_request"](#apache_request)

- `compression_threshold`

    See ["compression\_threshold"](#compression_threshold)

- `debug`

    Optional. If set with a positive integer, this will activate debugging message

## apache\_request

Returns the [Apache2::RequestRec](https://metacpan.org/pod/Apache2%3A%3ARequestRec) object that was provided upon object instantiation.

## bailout

    $api->bailout( $error_string );
    $api->bailout( { code => 400, message => $internal_message } );
    $api->bailout( { code => 400, message => $internal_message, public_message => "Sorry!" } );

Given an error message, this will prepare the HTTP header and response accordingly.

It will call ["gettext"](#gettext) to get the localised version of the error message, so this method is expected to be overriden by inheriting package.

If the outgoing content type set is `application/json` then this will return a properly formatted standard json error, such as:

    { "error": { "code": 401, "message": "Something went wrong" } }

Otherwise, it will send to the client the message as is.

## compression\_threshold( $integer )

The number of bytes threshold beyond which, the ["reply"](#reply) method will gzip compress the data returned to the client.

## decode\_base64( $data )

Given some data, this will decode it using base64 algorithm. It uses ["decode" in APR::Base64](https://metacpan.org/pod/APR%3A%3ABase64#decode) in the background.

## decode\_json( $data )

This decode from utf8 some data into a perl structure using [JSON](https://metacpan.org/pod/JSON)

If an error occurs, it will return undef and set an exception that can be accessed with the [error](https://metacpan.org/pod/Module%3A%3AGeneric#error) method.

## decode\_url( $string )

Given a url-encoded string, this returns the decoded string using ["decode" in APR::Request](https://metacpan.org/pod/APR%3A%3ARequest#decode)

## decode\_utf8( $data )

Decode some data from ut8 into perl internal utf8 representation using [Encode](https://metacpan.org/pod/Encode)

If an error occurs, it will return undef and set an exception that can be accessed with the [error](https://metacpan.org/pod/Module%3A%3AGeneric#errir) method.

## encode\_base64( $data )

Given some data, this will encode it using base64 algorithm. It uses ["encode" in APR::Base64](https://metacpan.org/pod/APR%3A%3ABase64#encode).

## encode\_json( $hash\_reference )

Given a hash reference, this will encode it into a json data representation.

However, this will not utf8 encode it, because this is done upon printing the data and returning it to the client.

The JSON object has the following properties enabled: `allow_nonref`, `allow_blessed`, `convert_blessed` and `relaxed`

## encode\_url( $string )

Given a string, this returns its url-encoded version using ["encode" in APR::Request](https://metacpan.org/pod/APR%3A%3ARequest#encode)

## encode\_utf8( $data )

This encode in ut8 the data provided and return it.

If an error occurs, it will return undef and set an exception that can be accessed with the **error** method.

## generate\_uuid

Generates an uuid string and return it. This uses [APR::UUID](https://metacpan.org/pod/APR%3A%3AUUID)

## get\_auth\_bearer

Checks whether an `Authorization` HTTP header was provided, and get the Bearer value.

If no header was found, it returns an empty string.

If an error occurs, it will return undef and set an exception that can be accessed with the **error** method.

## get\_handlers

Returns a reference to a list of handlers enabled for a given phase.

    $handlers_list = $res->get_handlers( $hook_name );

A list of handlers configured to run at the child\_exit phase:

    @handlers = @{ $res->get_handlers( 'PerlChildExitHandler' ) || []};

## gettext( 'string id' )

Get the localised version of the string passed as an argument.

This is supposed to be superseded by the package inheriting from [Apache2::API](https://metacpan.org/pod/Apache2%3A%3AAPI), if any.

## header\_datetime( DateTime object )

Given a [DateTime](https://metacpan.org/pod/DateTime) object, this sets it to GMT time zone and set the proper formatter ([Apache2::API::DateTime](https://metacpan.org/pod/Apache2%3A%3AAPI%3A%3ADateTime)) so that the stringification is compliant with...

## htpasswd

    my $ht = $api->htpasswd( $clear_password, create => 1 );
    my $ht = $api->htpasswd( $clear_password, create => 1, salt => $salt );
    my $ht = $api->htpasswd( $md5_password );
    my $bool = $ht->matches( $user_input_password );

This instantiates a new [Apache2::API::Password](https://metacpan.org/pod/Apache2%3A%3AAPI%3A%3APassword) object by providing its constructor whatever arguments was received.

It returns a new [Apache2::API::Password](https://metacpan.org/pod/Apache2%3A%3AAPI%3A%3APassword) object, or, upon error, `undef` in scalar context, or an empty list in list context.

## is\_perl\_option\_enabled

Checks if perl option is enabled in the Virtual Host and returns a boolean value

## json

Returns a JSON object.

You can provide an optional hash or hash reference of properties to enable or disable:

    my $J = $api->json( pretty => 1, relaxed => 1 );