API-Client
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NAME
API::Client
ABSTRACT
HTTP API Thin-Client Abstraction
SYNOPSIS
package main;
use API::Client;
my $client = API::Client->new(url => 'https://httpbin.org');
# $client->resource('post');
# $client->update(json => {...});
DESCRIPTION
This package provides an abstraction and method for rapidly developing
HTTP API clients. While this module can be used to interact with APIs
directly, API::Client was designed to be consumed (subclassed) by
higher-level purpose-specific API clients.
THIN CLIENT
The thin API client library is advantageous as it has complete API
coverage and can easily adapt to changes in the API with minimal
effort. As a thin-client superclass, this module does not map specific
HTTP requests to specific routines, nor does it provide parameter
validation, pagination, or other conventions found in typical API
client implementations; Instead, it simply provides a simple and
consistent mechanism for dynamically generating HTTP requests.
Additionally, this module has support for debugging and retrying API
calls as well as throwing exceptions when 4xx and 5xx server response
codes are returned.
INTEGRATES
This package integrates behaviors from:
Data::Object::Role::Buildable
Data::Object::Role::Stashable
Data::Object::Role::Throwable
LIBRARIES
This package uses type constraints from:
Types::Standard
SCENARIOS
This package supports the following scenarios:
building
# given: synopsis
my $resource = $client->resource('get');
# GET /get
my $get = $client->resource('get')->dispatch;
# HEAD /head
my $head = $client->resource('head')->dispatch(
method => 'head'
);
# PATCH /patch
my $patch = $client->resource('patch')->dispatch(
method => 'patch'
);
[$get, $head, $patch]
Building up an HTTP request is extremely easy, simply call the
"resource" to create a new object instance representing the API
endpoint you wish to issue a request against.
parameters, reuse and request isolation are made simple, i.e., you will
only need to configure the client once in your application.
creating
# given: synopsis
my $tx1 = $client->resource('post')->create(
json => {active => 1}
);
# is equivalent to
my $tx2 = $client->resource('post')->dispatch(
method => 'post',
json => {active => 1}
);
[$tx1, $tx2]
This example illustrates how you might create a new API resource.
deleting
# given: synopsis
my $tx1 = $client->resource('delete')->delete(
json => {active => 1}
);
# is equivalent to
my $tx2 = $client->resource('delete')->dispatch(
method => 'delete',
json => {active => 1}
);
[$tx1, $tx2]
This example illustrates how you might delete a new API resource.
fetching
# given: synopsis
my $tx1 = $client->resource('get')->fetch(
query => {active => 1}
);
# is equivalent to
my $tx2 = $client->resource('get')->dispatch(
method => 'get',
query => {active => 1}
);
[$tx1, $tx2]
This example illustrates how you might fetch an API resource.
subclassing
package Hookbin;
use Data::Object::Class;
extends 'API::Client';
sub auth {
['admin', 'secret']
}
sub headers {
[['Accept', '*/*']]
}
sub base {
['https://httpbin.org/get']
}
package main;
my $hookbin = Hookbin->new;
This package was designed to be subclassed and provides hooks into the
client building and request dispatching processes. Specifically, there
are three useful hooks (i.e. methods, which if present are used to
build up the client object and requests), which are, the auth hook,
which should return a Tuple[Str, Str] which is used to configure the
basic auth header, the base hook which should return a Tuple[Str] which
is used to configure the base URL, and the headers hook, which should
return a ArrayRef[Tuple[Str, Str]] which are used to configure the HTTP
request headers.
transacting
# given: synopsis
my $tx1 = $client->resource('patch')->patch(
json => {active => 1}
);
# is equivalent to
my $tx2 = $client->resource('patch')->dispatch(
method => 'patch',
json => {active => 1}
);
[$tx1, $tx2]
An HTTP request is only issued when the "dispatch" method is called,
directly or indirectly. Those calls return a Mojo::Transaction object
which provides access to the request and response objects.
updating
# given: synopsis
my $tx1 = $client->resource('put')->update(
json => {active => 1}
);
# is equivalent to
my $tx2 = $client->resource('put')->dispatch(
method => 'put',
json => {active => 1}
);
[$tx1, $tx2]
This example illustrates how you might update a new API resource.
ATTRIBUTES
This package has the following attributes:
debug
debug(Bool)
This attribute is read-only, accepts (Bool) values, and is optional.
fatal
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