google-api-ruby-client/examples/sinatra/explorer.rb

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#!/usr/bin/env ruby
# INSTALL
# sudo gem install sinatra liquid
# RUN
# ruby examples/sinatra/buzz_api.rb
root_dir = File.expand_path("../../..", __FILE__)
lib_dir = File.expand_path("./lib", root_dir)
$LOAD_PATH.unshift(lib_dir)
$LOAD_PATH.uniq!
require 'rubygems'
begin
require 'sinatra'
require 'liquid'
require 'signet/oauth_1/client'
require 'google/api_client'
rescue LoadError
STDERR.puts "Missing dependencies."
STDERR.puts "sudo gem install sinatra liquid signet google-api-client"
exit(1)
end
enable :sessions
CSS = <<-CSS
/* http://meyerweb.com/eric/tools/css/reset/ */
/* v1.0 | 20080212 */
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, font, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td {
margin: 0;
padding: 0;
border: 0;
outline: 0;
font-size: 100%;
vertical-align: baseline;
background: transparent;
}
body {
line-height: 1;
}
ol, ul {
list-style: none;
}
blockquote, q {
quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
content: '';
content: none;
}
/* remember to define focus styles! */
:focus {
outline: 0;
}
/* remember to highlight inserts somehow! */
ins {
text-decoration: none;
}
del {
text-decoration: line-through;
}
/* tables still need 'cellspacing="0"' in the markup */
table {
border-collapse: collapse;
border-spacing: 0;
}
/* End Reset */
body {
color: #555555;
background-color: #ffffff;
font-family: 'Helvetica', 'Arial', sans-serif;
font-size: 18px;
line-height: 27px;
padding: 27px 72px;
}
p {
margin-bottom: 27px;
}
h1 {
font-style: normal;
font-variant: normal;
font-weight: normal;
font-family: 'Helvetica', 'Arial', sans-serif;
font-size: 36px;
line-height: 54px;
margin-bottom: 0px;
}
h2 {
font-style: normal;
font-variant: normal;
font-weight: normal;
font-family: 'Monaco', 'Andale Mono', 'Consolas', 'Inconsolata', 'Courier New', monospace;
font-size: 14px;
line-height: 27px;
margin-top: 0px;
margin-bottom: 54px;
letter-spacing: 0.1em;
text-transform: none;
text-shadow: rgba(204, 204, 204, 0.75) 0px 1px 0px;
}
#output h3 {
font-style: normal;
font-variant: normal;
font-weight: bold;
font-size: 18px;
line-height: 27px;
margin: 27px 0px;
}
#output h3:first-child {
margin-top: 0px;
}
ul, ol, dl {
margin-bottom: 27px;
}
li {
margin: 0px 0px;
}
form {
float: left;
display: block;
}
form label, form input, form textarea {
font-family: 'Monaco', 'Andale Mono', 'Consolas', 'Inconsolata', 'Courier New', monospace;
display: block;
}
form label {
margin-bottom: 5px;
}
form input {
width: 300px;
font-size: 14px;
padding: 5px;
}
form textarea {
height: 150px;
min-height: 150px;
width: 300px;
min-width: 300px;
max-width: 300px;
}
#output {
font-family: 'Monaco', 'Andale Mono', 'Consolas', 'Inconsolata', 'Courier New', monospace;
display: inline-block;
margin-left: 27px;
padding: 27px;
border: 1px dotted #555555;
width: 1120px;
max-width: 100%;
min-height: 600px;
}
#output pre {
overflow: auto;
}
a {
color: #000000;
text-decoration: none;
border-bottom: 1px dotted rgba(112, 56, 56, 0.0);
}
a:hover {
-webkit-transition: all 0.3s linear;
color: #703838;
border-bottom: 1px dotted rgba(112, 56, 56, 1.0);
}
p a {
border-bottom: 1px dotted rgba(0, 0, 0, 1.0);
}
h1, h2 {
color: #000000;
}
h3, h4, h5, h6 {
color: #333333;
}
.block {
display: block;
}
button {
margin-bottom: 72px;
padding: 7px 11px;
font-size: 14px;
}
CSS
JAVASCRIPT = <<-JAVASCRIPT
var uriTimeout = null;
$(document).ready(function () {
$('#output').hide();
var rpcName = $('#rpc-name').text().trim();
var serviceId = $('#service-id').text().trim();
var getParameters = function() {
var parameters = {};
var fields = $('.parameter').parents('li');
for (var i = 0; i < fields.length; i++) {
var input = $(fields[i]).find('input');
var label = $(fields[i]).find('label');
if (input.val() && input.val() != "") {
parameters[label.text()] = input.val();
}
}
return parameters;
}
var updateOutput = function (event) {
var request = $('#request').text().trim();
var response = $('#response').text().trim();
if (request != '' || response != '') {
$('#output').show();
} else {
$('#output').hide();
}
}
var handleUri = function (event) {
updateOutput(event);
if (uriTimeout) {
clearTimeout(uriTimeout);
}
uriTimeout = setTimeout(function () {
$.ajax({
"url": "/template/" + serviceId + "/" + rpcName + "/",
"data": getParameters(),
"dataType": "text",
"ifModified": true,
"success": function (data, textStatus, xhr) {
updateOutput(event);
if (textStatus == 'success') {
$('#uri-template').html(data);
if (uriTimeout) {
clearTimeout(uriTimeout);
}
}
}
});
}, 350);
}
var getResponse = function (event) {
$.ajax({
"url": "/response/" + serviceId + "/" + rpcName + "/",
"type": "POST",
"data": getParameters(),
"dataType": "html",
"ifModified": true,
"success": function (data, textStatus, xhr) {
if (textStatus == 'success') {
$('#response').text(data);
}
updateOutput(event);
}
});
}
var getRequest = function (event) {
$.ajax({
"url": "/request/" + serviceId + "/" + rpcName + "/",
"type": "GET",
"data": getParameters(),
"dataType": "html",
"ifModified": true,
"success": function (data, textStatus, xhr) {
if (textStatus == 'success') {
$('#request').text(data);
updateOutput(event);
getResponse(event);
}
}
});
}
var transmit = function (event) {
$('#request').html('');
$('#response').html('');
handleUri(event);
updateOutput(event);
getRequest(event);
}
$('form').submit(function (event) { event.preventDefault(); });
$('button').click(transmit);
$('.parameter').keyup(handleUri);
$('.parameter').blur(handleUri);
});
JAVASCRIPT
def client
@client ||= Google::APIClient.new(
:service => 'buzz',
:authorization => Signet::OAuth1::Client.new(
:temporary_credential_uri =>
'https://www.google.com/accounts/OAuthGetRequestToken',
:authorization_uri =>
'https://www.google.com/buzz/api/auth/OAuthAuthorizeToken',
:token_credential_uri =>
'https://www.google.com/accounts/OAuthGetAccessToken',
:client_credential_key => 'anonymous',
:client_credential_secret => 'anonymous'
)
)
end
def service(service_name, service_version)
unless service_version
service_version = client.latest_service_version(service_name).version
end
client.discovered_service(service_name, service_version)
end
get '/template/:service/:method/' do
service_name, service_version = params[:service].split("-", 2)
method = service(service_name, service_version).to_h[params[:method].to_s]
parameters = method.parameters.inject({}) do |accu, parameter|
accu[parameter] = params[parameter.to_sym] if params[parameter.to_sym]
accu
end
uri = Addressable::URI.parse(
method.uri_template.partial_expand(parameters).pattern
)
template_variables = method.uri_template.variables
query_parameters = method.normalize_parameters(parameters).reject do |k, v|
template_variables.include?(k)
end
if query_parameters.size > 0
uri.query_values = (uri.query_values || {}).merge(query_parameters)
end
# Normalization is necessary because of undesirable percent-escaping
# during URI template expansion
return uri.normalize.to_s.gsub('%7B', '{').gsub('%7D', '}')
end
get '/request/:service/:method/' do
service_name, service_version = params[:service].split("-", 2)
method = service(service_name, service_version).to_h[params[:method].to_s]
parameters = method.parameters.inject({}) do |accu, parameter|
accu[parameter] = params[parameter.to_sym] if params[parameter.to_sym]
accu
end
body = ''
request = client.generate_request(
method, parameters.merge("pp" => "1"), body, [], {:signed => false}
)
method, uri, headers, body = request
merged_body = StringIO.new
body.each do |chunk|
merged_body << chunk
end
merged_body.rewind
<<-REQUEST.strip
#{method} #{uri} HTTP/1.1
#{(headers.map { |k,v| "#{k}: #{v}" }).join('\n')}
#{merged_body.string}
REQUEST
end
post '/response/:service/:method/' do
require 'rack/utils'
service_name, service_version = params[:service].split("-", 2)
method = service(service_name, service_version).to_h[params[:method].to_s]
parameters = method.parameters.inject({}) do |accu, parameter|
accu[parameter] = params[parameter.to_sym] if params[parameter.to_sym]
accu
end
body = ''
response = client.execute(
method, parameters.merge("pp" => "1"), body, [], {:signed => false}
)
status, headers, body = response
status_message = Rack::Utils::HTTP_STATUS_CODES[status.to_i]
merged_body = StringIO.new
body.each do |chunk|
merged_body << chunk
end
merged_body.rewind
<<-RESPONSE.strip
#{status} #{status_message}
#{(headers.map { |k,v| "#{k}: #{v}" }).join("\n")}
#{merged_body.string}
RESPONSE
end
get '/explore/:service/' do
service_name, service_version = params[:service].split("-", 2)
service_version = service(service_name, service_version).version
variables = {
"css" => CSS,
"service_name" => service_name,
"service_version" => service_version,
"methods" => service(service_name, service_version).to_h.keys.sort
}
Liquid::Template.parse(<<-HTML).render(variables)
<!DOCTYPE html>
<html>
<head>
<title>{{service_name}}</title>
<style type="text/css">
{{css}}
</style>
</head>
<body>
<h1>{{service_name}}</h1>
<ul>
{% for method in methods %}
<li>
<a href="/explore/{{service_name}}-{{service_version}}/{{method}}/">
{{method}}
</a>
</li>
{% endfor %}
</ul>
</body>
</html>
HTML
end
get '/explore/:service/:method/' do
service_name, service_version = params[:service].split("-", 2)
service_version = service(service_name, service_version).version
method = service(service_name, service_version).to_h[params[:method].to_s]
variables = {
"css" => CSS,
"javascript" => JAVASCRIPT,
"http_method" => (method.description['httpMethod'] || 'GET'),
"service_name" => service_name,
"service_version" => service_version,
"method" => params[:method].to_s,
"required_parameters" =>
method.required_parameters,
"optional_parameters" =>
method.optional_parameters.sort,
"template" => method.uri_template.pattern
}
Liquid::Template.parse(<<-HTML).render(variables)
<!DOCTYPE html>
<html>
<head>
<title>{{service_name}} - {{method}}</title>
<style type="text/css">
{{css}}
</style>
<script
src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"
type="text/javascript">
</script>
<script type="text/javascript">
{{javascript}}
</script>
</head>
<body>
<h3 id="service-id">
<a href="/explore/{{service_name}}-{{service_version}}/">
{{service_name}}-{{service_version}}
</a>
</h3>
<h1 id="rpc-name">{{method}}</h1>
<h2>{{http_method}} <span id="uri-template">{{template}}</span></h2>
<form>
<ul>
{% for parameter in required_parameters %}
<li>
<label for="param-{{parameter}}">{{parameter}}</label>
<input id="param-{{parameter}}" name="param-{{parameter}}"
class="parameter" type="text" />
</li>
{% endfor %}
{% for parameter in optional_parameters %}
<li>
<label for="param-{{parameter}}">{{parameter}}</label>
<input id="param-{{parameter}}" name="param-{{parameter}}"
class="parameter" type="text" />
</li>
{% endfor %}
{% if http_method != 'GET' %}
<li>
<label for="http-body">body</label>
<textarea id="http-body" name="http-body"></textarea>
</li>
{% endif %}
</ul>
<button>Transmit</button>
</form>
<div id="output">
<h3>Request</h3>
<pre id="request"></pre>
<h3>Response</h3>
<pre id="response"></pre>
</div>
</body>
</html>
HTML
end
get '/favicon.ico' do
require 'httpadapter'
HTTPAdapter.transmit(
['GET', 'http://www.google.com/favicon.ico', [], ['']],
HTTPAdapter::NetHTTPRequestAdapter
)
end