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require 'net/http'
require 'uri'
require 'puppet/network/http_pool'
# Access objects via REST
class Puppet::Indirector::REST < Puppet::Indirector::Terminus
class << self
attr_reader :server_setting, :port_setting
end
# Specify the setting that we should use to get the server name.
def self.use_server_setting(setting)
@server_setting = setting
end
def self.server
return Puppet.settings[server_setting || :server]
end
# Specify the setting that we should use to get the port.
def self.use_port_setting(setting)
@port_setting = setting
end
def self.port
return Puppet.settings[port_setting || :masterport].to_i
end
# Figure out the content type, turn that into a format, and use the format
# to extract the body of the response.
def deserialize(response, multiple = false)
case response.code
when "404"
return nil
when /^2/
unless response['content-type']
raise "No content type in http response; cannot parse"
end
# Convert the response to a deserialized object.
if multiple
model.convert_from_multiple(response['content-type'], response.body)
else
model.convert_from(response['content-type'], response.body)
end
else
# Raise the http error if we didn't get a 'success' of some kind.
message = "Server returned %s: %s" % [response.code, response.message]
raise Net::HTTPError.new(message, response)
end
end
# Provide appropriate headers.
def headers
{"Accept" => model.supported_formats.join(", ")}
end
def network(request)
Puppet::Network::HttpPool.http_instance(request.server || self.class.server, request.port || self.class.port)
end
def find(request)
deserialize network(request).get("/#{indirection.name}/#{request.key}#{query_string(request)}", headers)
end
def search(request)
if request.key
path = "/#{indirection.name}s/#{request.key}#{query_string(request)}"
else
path = "/#{indirection.name}s#{query_string(request)}"
end
unless result = deserialize(network(request).get(path, headers), true)
return []
end
return result
end
def destroy(request)
raise ArgumentError, "DELETE does not accept options" unless request.options.empty?
deserialize network(request).delete("/#{indirection.name}/#{request.key}", headers)
end
def save(request)
raise ArgumentError, "PUT does not accept options" unless request.options.empty?
deserialize network(request).put("/#{indirection.name}/", request.instance.render, headers)
end
# Create the query string, if options are present.
def query_string(request)
return "" unless request.options and ! request.options.empty?
"?" + request.options.collect do |key, value|
case value
when nil; next
when true, false; value = value.to_s
when String; value = URI.escape(value)
when Symbol; value = URI.escape(value.to_s)
when Array; value = URI.escape(YAML.dump(value))
else
raise ArgumentError, "HTTP REST queries cannot handle values of type '%s'" % value.class
end
"%s=%s" % [key, value]
end.join("&")
end
end
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