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#
# Author:: Adam Jacob (<adam@opscode.com>)
# Copyright:: Copyright (c) 2008 Opscode, Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require 'chef/mixin/params_validate'
require 'chef/openid_registration'
require 'net/https'
require 'uri'
require 'json'
require 'tempfile'
class Chef
class REST
attr_accessor :url, :cookies
def initialize(url)
@url = url
@cookies = Hash.new
end
# Register for an OpenID
def register(user, pass, validation_token=nil)
Chef::Log.debug("Registering #{user} for an openid")
registration = nil
begin
registration = get_rest("registrations/#{user}")
rescue Net::HTTPServerException => e
unless e.message =~ /^404/
raise e
end
end
unless registration
post_rest(
"registrations",
{
:id => user,
:password => pass,
:validation_token => validation_token
}
)
end
end
# Authenticate
def authenticate(user, pass)
Chef::Log.debug("Authenticating #{user} via openid")
response = post_rest('openid/consumer/start', {
"openid_identifier" => "#{Chef::Config[:openid_url]}/openid/server/node/#{user}",
"submit" => "Verify"
})
post_rest(
"#{Chef::Config[:openid_url]}#{response["action"]}",
{ "password" => pass }
)
end
# Send an HTTP GET request to the path
#
# === Parameters
# path:: The path to GET
# raw:: Whether you want the raw body returned, or JSON inflated. Defaults
# to JSON inflated.
def get_rest(path, raw=false)
run_request(:GET, create_url(path), false, 10, raw)
end
# Send an HTTP DELETE request to the path
def delete_rest(path)
run_request(:DELETE, create_url(path))
end
# Send an HTTP POST request to the path
def post_rest(path, json)
run_request(:POST, create_url(path), json)
end
# Send an HTTP PUT request to the path
def put_rest(path, json)
run_request(:PUT, create_url(path), json)
end
def create_url(path)
if path =~ /^(http|https):\/\//
URI.parse(path)
else
URI.parse("#{@url}/#{path}")
end
end
# Actually run an HTTP request. First argument is the HTTP method,
# which should be one of :GET, :PUT, :POST or :DELETE. Next is the
# URL, then an object to include in the body (which will be converted with
# .to_json) and finally, the limit of HTTP Redirects to follow (10).
#
# Typically, you won't use this method -- instead, you'll use one of
# the helper methods (get_rest, post_rest, etc.)
#
# Will return the body of the response on success.
def run_request(method, url, data=false, limit=10, raw=false)
http_retry_delay = Chef::Config[:http_retry_delay]
http_retry_count = Chef::Config[:http_retry_count]
raise ArgumentError, 'HTTP redirect too deep' if limit == 0
http = Net::HTTP.new(url.host, url.port)
if url.scheme == "https"
http.use_ssl = true
if Chef::Config[:ssl_verify_mode] == :verify_none
http.verify_mode = OpenSSL::SSL::VERIFY_NONE
end
end
http.read_timeout = Chef::Config[:rest_timeout]
headers = Hash.new
unless raw
headers = {
'Accept' => "application/json",
}
end
if @cookies.has_key?("#{url.host}:#{url.port}")
headers['Cookie'] = @cookies["#{url.host}:#{url.port}"]
end
req = nil
case method
when :GET
req_path = "#{url.path}"
req_path << "?#{url.query}" if url.query
req = Net::HTTP::Get.new(req_path, headers)
when :POST
headers["Content-Type"] = 'application/json' if data
req = Net::HTTP::Post.new(url.path, headers)
req.body = data.to_json if data
when :PUT
headers["Content-Type"] = 'application/json' if data
req = Net::HTTP::Put.new(url.path, headers)
req.body = data.to_json if data
when :DELETE
req_path = "#{url.path}"
req_path << "?#{url.query}" if url.query
req = Net::HTTP::Delete.new(req_path, headers)
else
raise ArgumentError, "You must provide :GET, :PUT, :POST or :DELETE as the method"
end
Chef::Log.debug("Sending HTTP Request via #{req.method} to #{req.path}")
res = nil
tf = nil
http_retries = 1
# TODO - Figure out how to test this block - I really have no idea how
# to do it without actually calling http.request...
begin
res = http.request(req) do |response|
if raw
tf = Tempfile.new("chef-rest")
# Stolen from http://www.ruby-forum.com/topic/166423
# Kudos to _why!
size, total = 0, response.header['Content-Length'].to_i
response.read_body do |chunk|
tf.write(chunk)
size += chunk.size
if size == 0
Chef::Log.debug("#{req.path} done (0 length file)")
elsif total == 0
Chef::Log.debug("#{req.path} (zero content length)")
else
Chef::Log.debug("#{req.path} %d%% done (%d of %d)" % [(size * 100) / total, size, total])
end
end
tf.close
tf
else
response.read_body
end
response
end
rescue Errno::ECONNREFUSED
Chef::Log.error("Connection refused connecting to #{url.host}:#{url.port} for #{req.path} #{http_retries}/#{http_retry_count}")
sleep(http_retry_delay)
retry if (http_retries += 1) < http_retry_count
raise Errno::ECONNREFUSED, "Connection refused connecting to #{url.host}:#{url.port} for #{req.path}, giving up"
rescue Timeout::Error
Chef::Log.error("Timeout connecting to #{url.host}:#{url.port} for #{req.path}, retry #{http_retries}/#{http_retry_count}")
sleep(http_retry_delay)
retry if (http_retries += 1) < http_retry_count
raise Timeout::Error, "Timeout connecting to #{url.host}:#{url.port} for #{req.path}, giving up"
end
if res.kind_of?(Net::HTTPSuccess)
if res['set-cookie']
@cookies["#{url.host}:#{url.port}"] = res['set-cookie']
end
if res['content-type'] =~ /json/
JSON.parse(res.body)
else
if raw
tf
else
res.body
end
end
elsif res.kind_of?(Net::HTTPFound)
if res['set-cookie']
@cookies["#{url.host}:#{url.port}"] = res['set-cookie']
end
run_request(:GET, create_url(res['location']), false, limit - 1, raw)
else
res.error!
end
end
end
end
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