Class: Manticore::Response

Inherits:
Object
  • Object
show all
Includes:
Callable, ResponseHandler
Defined in:
lib/manticore/response.rb

Overview

Implementation of ResponseHandler which serves as a Ruby proxy for HTTPClient responses.

Direct Known Subclasses

StubbedResponse

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(client, request, context, &block) ⇒ Response

Creates a new Response

Parameters:

  • request (HttpRequestBase) —

    The underlying request object

  • context (HttpContext) —

    The underlying HttpContext



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# File 'lib/manticore/response.rb', line 29

def initialize(client, request, context, &block)
  @client  = client
  @request = request
  @context = context
  @handlers = {
    success:   block || Proc.new {|resp| resp.body },
    failure:   Proc.new {|ex| raise ex },
    cancelled: Proc.new {},
    complete:  []
  }
end

Instance Attribute Details

#callback_result ⇒ Object (readonly)

Returns Value returned from any given on_success/response block.

Returns:

  • Value returned from any given on_success/response block



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# File 'lib/manticore/response.rb', line 13

class Response
  include_package "org.apache.http.client"
  include_package "org.apache.http.util"
  include_package "org.apache.http.protocol"
  java_import "org.apache.http.client.protocol.HttpClientContext"
  java_import 'java.util.concurrent.Callable'

  include ResponseHandler
  include Callable

  attr_reader :context, :request, :callback_result, :called

  # Creates a new Response
  #
  # @param  request            [HttpRequestBase] The underlying request object
  # @param  context            [HttpContext] The underlying HttpContext
  def initialize(client, request, context, &block)
    @client  = client
    @request = request
    @context = context
    @handlers = {
      success:   block || Proc.new {|resp| resp.body },
      failure:   Proc.new {|ex| raise ex },
      cancelled: Proc.new {},
      complete:  []
    }
  end

  # Implementation of Callable#call
  # Used by Manticore::Client to invoke the request tied to this response.
  def call
    raise "Already called" if @called
    @called = true
    begin
      @client.execute @request, self, @context
    rescue Java::JavaNet::SocketTimeoutException => e
      ex = Manticore::SocketTimeout
    rescue Java::OrgApacheHttpConn::ConnectTimeoutException => e
      ex = Manticore::ConnectTimeout
    rescue Java::JavaNet::SocketException => e
      ex = Manticore::SocketException
    rescue Java::OrgApacheHttpClient::ClientProtocolException, Java::JavaxNetSsl::SSLHandshakeException, Java::OrgApacheHttpConn::HttpHostConnectException,
           Java::OrgApacheHttp::NoHttpResponseException, Java::OrgApacheHttp::ConnectionClosedException => e
      ex = Manticore::ClientProtocolException
    rescue Java::JavaNet::UnknownHostException => e
      ex = Manticore::ResolutionFailure
    rescue Java::JavaLang::IllegalArgumentException => e
      ex = Manticore::InvalidArgumentException
    rescue Java::JavaLang::Exception => e # Handle anything we may have missed from java
      ex = Manticore::UnknownException
    rescue StandardError => e
      @exception = e
    end

    # TODO: If calling async, execute_complete may fail and then silently swallow exceptions. How do we fix that?
    if ex || @exception
      @exception ||= ex.new(e.cause || e.message)
      @handlers[:failure].call @exception
      execute_complete
      nil
    else
      execute_complete
      self
    end
  end

  def fire_and_forget
    @client.executor.submit self
  end

  # Fetch the final resolved URL for this response. Will call the request if it has not been called yet.
  #
  # @return [String]
  def final_url
    call_once
    last_request = context.get_attribute ExecutionContext.HTTP_REQUEST
    last_host    = context.get_attribute ExecutionContext.HTTP_TARGET_HOST
    host         = last_host.to_uri
    url          = last_request.get_uri
    URI.join(host, url.to_s)
  end

  # Fetch the body content of this response. Will call the request if it has not been called yet.
  # This fetches the input stream in Ruby; this isn't optimal, but it's faster than
  # fetching the whole thing in Java then UTF-8 encoding it all into a giant Ruby string.
  #
  # This permits for streaming response bodies, as well.
  #
  # @example Streaming response
  #
  #     client.get("http://example.com/resource").on_success do |response|
  #       response.body do |chunk|
  #         # Do something with chunk, which is a parsed portion of the returned body
  #       end
  #     end
  #
  # @return [String] Reponse body
  def body(&block)
    call_once
    @body ||= begin
      if entity = @response.get_entity
        EntityConverter.new.read_entity(entity, &block)
      end
    rescue Java::JavaIo::IOException, Java::JavaNet::SocketException, IOError => e
      raise StreamClosedException.new("Could not read from stream: #{e.message}")
    # ensure
    #   @request.release_connection
    end
  end
  alias_method :read_body, :body

  # Returns true if this response has been called (requested and populated) yet
  def called?
    !!@called
  end

  # Return a hash of headers from this response. Will call the request if it has not been called yet.
  #
  # @return [Array<string, obj>] Hash of headers. Keys will be lower-case.
  def headers
    call_once
    @headers
  end

  # Return the value of a single response header. Will call the request if it has not been called yet.
  #
  # @return [String] Value of the header, or nil if not present
  def [](key)
    headers[key.downcase]
  end

  # Return the response code from this request as an integer. Will call the request if it has not been called yet.
  #
  # @return [Integer] The response code
  def code
    call_once
    @code
  end

  # Return the response text for a request as a string (Not Found, Ok, Bad Request, etc). Will call the request if it has not been called yet.
  #
  # @return [String] The response code text
  def message
    call_once
    @message
  end

  # Returns the length of the response body. Returns -1 if content-length is not present in the response.
  #
  # @return [Integer]
  def length
    (headers["content-length"] || -1).to_i
  end

  # Returns an array of {Manticore::Cookie Cookies} associated with this request's execution context
  #
  # @return [Array<Manticore::Cookie>]
  def cookies
    call_once
    @cookies ||= begin
      @context.get_cookie_store.get_cookies.inject({}) do |all, java_cookie|
        c = Cookie.from_java(java_cookie)
        all[c.name] ||= []
        all[c.name] << c
        all
      end
    end
  end

  # Set handler for success responses
  # @param block Proc which will be invoked on a successful response. Block will receive |response, request|
  #
  # @return self
  def on_success(&block)
    @handlers[:success] = block
    self
  end
  alias_method :success, :on_success

  # Set handler for failure responses
  # @param block Proc which will be invoked on a on a failed response. Block will receive an exception object.
  #
  # @return self
  def on_failure(&block)
    @handlers[:failure] = block
    self
  end
  alias_method :failure, :on_failure
  alias_method :fail,    :on_failure

  # Set handler for cancelled requests
  # @param block Proc which will be invoked on a on a cancelled response.
  #
  # @return self
  def on_cancelled(&block)
    @handlers[:cancelled] = block
    self
  end
  alias_method :cancelled,       :on_cancelled
  alias_method :cancellation,    :on_cancelled
  alias_method :on_cancellation, :on_cancelled

  # Set handler for cancelled requests
  # @param block Proc which will be invoked on a on a cancelled response.
  #
  # @return self
  def on_complete(&block)
    @handlers[:complete] = Array(@handlers[:complete]).compact + [block]
    self
  end
  alias_method :complete,     :on_complete
  alias_method :completed,    :on_complete
  alias_method :on_completed, :on_complete

  def times_retried
    @context.get_attribute("retryCount") || 0
  end

  private

  # Implementation of {http://hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/org/apache/http/client/ResponseHandler.html#handleResponse(org.apache.http.HttpResponse) ResponseHandler#handleResponse}
  # @param  response [Response] The underlying Java Response object
  def handleResponse(response)
    @response        = response
    @code            = response.get_status_line.get_status_code
    @message         = response.get_status_line.get_reason_phrase
    @headers         = Hash[* response.get_all_headers.flat_map {|h| [h.get_name.downcase, h.get_value]} ]
    @callback_result = @handlers[:success].call(self)
    nil
  end

  def call_once
    call unless called?
    @called = true
  end

  def execute_complete
    @handlers[:complete].each {|h| h.call(self) }
  end
end

#called ⇒ Object (readonly)

Returns the value of attribute called.



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# File 'lib/manticore/response.rb', line 23

def called
  @called
end

#code ⇒ Integer (readonly)

Return the response code from this request as an integer. Will call the request if it has not been called yet.

Returns:

  • (Integer) —

    The response code



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# File 'lib/manticore/response.rb', line 13

class Response
  include_package "org.apache.http.client"
  include_package "org.apache.http.util"
  include_package "org.apache.http.protocol"
  java_import "org.apache.http.client.protocol.HttpClientContext"
  java_import 'java.util.concurrent.Callable'

  include ResponseHandler
  include Callable

  attr_reader :context, :request, :callback_result, :called

  # Creates a new Response
  #
  # @param  request            [HttpRequestBase] The underlying request object
  # @param  context            [HttpContext] The underlying HttpContext
  def initialize(client, request, context, &block)
    @client  = client
    @request = request
    @context = context
    @handlers = {
      success:   block || Proc.new {|resp| resp.body },
      failure:   Proc.new {|ex| raise ex },
      cancelled: Proc.new {},
      complete:  []
    }
  end

  # Implementation of Callable#call
  # Used by Manticore::Client to invoke the request tied to this response.
  def call
    raise "Already called" if @called
    @called = true
    begin
      @client.execute @request, self, @context
    rescue Java::JavaNet::SocketTimeoutException => e
      ex = Manticore::SocketTimeout
    rescue Java::OrgApacheHttpConn::ConnectTimeoutException => e
      ex = Manticore::ConnectTimeout
    rescue Java::JavaNet::SocketException => e
      ex = Manticore::SocketException
    rescue Java::OrgApacheHttpClient::ClientProtocolException, Java::JavaxNetSsl::SSLHandshakeException, Java::OrgApacheHttpConn::HttpHostConnectException,
           Java::OrgApacheHttp::NoHttpResponseException, Java::OrgApacheHttp::ConnectionClosedException => e
      ex = Manticore::ClientProtocolException
    rescue Java::JavaNet::UnknownHostException => e
      ex = Manticore::ResolutionFailure
    rescue Java::JavaLang::IllegalArgumentException => e
      ex = Manticore::InvalidArgumentException
    rescue Java::JavaLang::Exception => e # Handle anything we may have missed from java
      ex = Manticore::UnknownException
    rescue StandardError => e
      @exception = e
    end

    # TODO: If calling async, execute_complete may fail and then silently swallow exceptions. How do we fix that?
    if ex || @exception
      @exception ||= ex.new(e.cause || e.message)
      @handlers[:failure].call @exception
      execute_complete
      nil
    else
      execute_complete
      self
    end
  end

  def fire_and_forget
    @client.executor.submit self
  end

  # Fetch the final resolved URL for this response. Will call the request if it has not been called yet.
  #
  # @return [String]
  def final_url
    call_once
    last_request = context.get_attribute ExecutionContext.HTTP_REQUEST
    last_host    = context.get_attribute ExecutionContext.HTTP_TARGET_HOST
    host         = last_host.to_uri
    url          = last_request.get_uri
    URI.join(host, url.to_s)
  end

  # Fetch the body content of this response. Will call the request if it has not been called yet.
  # This fetches the input stream in Ruby; this isn't optimal, but it's faster than
  # fetching the whole thing in Java then UTF-8 encoding it all into a giant Ruby string.
  #
  # This permits for streaming response bodies, as well.
  #
  # @example Streaming response
  #
  #     client.get("http://example.com/resource").on_success do |response|
  #       response.body do |chunk|
  #         # Do something with chunk, which is a parsed portion of the returned body
  #       end
  #     end
  #
  # @return [String] Reponse body
  def body(&block)
    call_once
    @body ||= begin
      if entity = @response.get_entity
        EntityConverter.new.read_entity(entity, &block)
      end
    rescue Java::JavaIo::IOException, Java::JavaNet::SocketException, IOError => e
      raise StreamClosedException.new("Could not read from stream: #{e.message}")
    # ensure
    #   @request.release_connection
    end
  end
  alias_method :read_body, :body

  # Returns true if this response has been called (requested and populated) yet
  def called?
    !!@called
  end

  # Return a hash of headers from this response. Will call the request if it has not been called yet.
  #
  # @return [Array<string, obj>] Hash of headers. Keys will be lower-case.
  def headers
    call_once
    @headers
  end

  # Return the value of a single response header. Will call the request if it has not been called yet.
  #
  # @return [String] Value of the header, or nil if not present
  def [](key)
    headers[key.downcase]
  end

  # Return the response code from this request as an integer. Will call the request if it has not been called yet.
  #
  # @return [Integer] The response code
  def code
    call_once
    @code
  end

  # Return the response text for a request as a string (Not Found, Ok, Bad Request, etc). Will call the request if it has not been called yet.
  #
  # @return [String] The response code text
  def message
    call_once
    @message
  end

  # Returns the length of the response body. Returns -1 if content-length is not present in the response.
  #
  # @return [Integer]
  def length
    (headers["content-length"] || -1).to_i
  end

  # Returns an array of {Manticore::Cookie Cookies} associated with this request's execution context
  #
  # @return [Array<Manticore::Cookie>]
  def cookies
    call_once
    @cookies ||= begin
      @context.get_cookie_store.get_cookies.inject({}) do |all, java_cookie|
        c = Cookie.from_java(java_cookie)
        all[c.name] ||= []
        all[c.name] << c
        all
      end
    end
  end

  # Set handler for success responses
  # @param block Proc which will be invoked on a successful response. Block will receive |response, request|
  #
  # @return self
  def on_success(&block)
    @handlers[:success] = block
    self
  end
  alias_method :success, :on_success

  # Set handler for failure responses
  # @param block Proc which will be invoked on a on a failed response. Block will receive an exception object.
  #
  # @return self
  def on_failure(&block)
    @handlers[:failure] = block
    self
  end
  alias_method :failure, :on_failure
  alias_method :fail,    :on_failure

  # Set handler for cancelled requests
  # @param block Proc which will be invoked on a on a cancelled response.
  #
  # @return self
  def on_cancelled(&block)
    @handlers[:cancelled] = block
    self
  end
  alias_method :cancelled,       :on_cancelled
  alias_method :cancellation,    :on_cancelled
  alias_method :on_cancellation, :on_cancelled

  # Set handler for cancelled requests
  # @param block Proc which will be invoked on a on a cancelled response.
  #
  # @return self
  def on_complete(&block)
    @handlers[:complete] = Array(@handlers[:complete]).compact + [block]
    self
  end
  alias_method :complete,     :on_complete
  alias_method :completed,    :on_complete
  alias_method :on_completed, :on_complete

  def times_retried
    @context.get_attribute("retryCount") || 0
  end

  private

  # Implementation of {http://hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/org/apache/http/client/ResponseHandler.html#handleResponse(org.apache.http.HttpResponse) ResponseHandler#handleResponse}
  # @param  response [Response] The underlying Java Response object
  def handleResponse(response)
    @response        = response
    @code            = response.get_status_line.get_status_code
    @message         = response.get_status_line.get_reason_phrase
    @headers         = Hash[* response.get_all_headers.flat_map {|h| [h.get_name.downcase, h.get_value]} ]
    @callback_result = @handlers[:success].call(self)
    nil
  end

  def call_once
    call unless called?
    @called = true
  end

  def execute_complete
    @handlers[:complete].each {|h| h.call(self) }
  end
end

#context ⇒ HttpContext (readonly)

Returns Context associated with this request/response.

Returns:

  • (HttpContext) —

    Context associated with this request/response



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# File 'lib/manticore/response.rb', line 13

class Response
  include_package "org.apache.http.client"
  include_package "org.apache.http.util"
  include_package "org.apache.http.protocol"
  java_import "org.apache.http.client.protocol.HttpClientContext"
  java_import 'java.util.concurrent.Callable'

  include ResponseHandler
  include Callable

  attr_reader :context, :request, :callback_result, :called

  # Creates a new Response
  #
  # @param  request            [HttpRequestBase] The underlying request object
  # @param  context            [HttpContext] The underlying HttpContext
  def initialize(client, request, context, &block)
    @client  = client
    @request = request
    @context = context
    @handlers = {
      success:   block || Proc.new {|resp| resp.body },
      failure:   Proc.new {|ex| raise ex },
      cancelled: Proc.new {},
      complete:  []
    }
  end

  # Implementation of Callable#call
  # Used by Manticore::Client to invoke the request tied to this response.
  def call
    raise "Already called" if @called
    @called = true
    begin
      @client.execute @request, self, @context
    rescue Java::JavaNet::SocketTimeoutException => e
      ex = Manticore::SocketTimeout
    rescue Java::OrgApacheHttpConn::ConnectTimeoutException => e
      ex = Manticore::ConnectTimeout
    rescue Java::JavaNet::SocketException => e
      ex = Manticore::SocketException
    rescue Java::OrgApacheHttpClient::ClientProtocolException, Java::JavaxNetSsl::SSLHandshakeException, Java::OrgApacheHttpConn::HttpHostConnectException,
           Java::OrgApacheHttp::NoHttpResponseException, Java::OrgApacheHttp::ConnectionClosedException => e
      ex = Manticore::ClientProtocolException
    rescue Java::JavaNet::UnknownHostException => e
      ex = Manticore::ResolutionFailure
    rescue Java::JavaLang::IllegalArgumentException => e
      ex = Manticore::InvalidArgumentException
    rescue Java::JavaLang::Exception => e # Handle anything we may have missed from java
      ex = Manticore::UnknownException
    rescue StandardError => e
      @exception = e
    end

    # TODO: If calling async, execute_complete may fail and then silently swallow exceptions. How do we fix that?
    if ex || @exception
      @exception ||= ex.new(e.cause || e.message)
      @handlers[:failure].call @exception
      execute_complete
      nil
    else
      execute_complete
      self
    end
  end

  def fire_and_forget
    @client.executor.submit self
  end

  # Fetch the final resolved URL for this response. Will call the request if it has not been called yet.
  #
  # @return [String]
  def final_url
    call_once
    last_request = context.get_attribute ExecutionContext.HTTP_REQUEST
    last_host    = context.get_attribute ExecutionContext.HTTP_TARGET_HOST
    host         = last_host.to_uri
    url          = last_request.get_uri
    URI.join(host, url.to_s)
  end

  # Fetch the body content of this response. Will call the request if it has not been called yet.
  # This fetches the input stream in Ruby; this isn't optimal, but it's faster than
  # fetching the whole thing in Java then UTF-8 encoding it all into a giant Ruby string.
  #
  # This permits for streaming response bodies, as well.
  #
  # @example Streaming response
  #
  #     client.get("http://example.com/resource").on_success do |response|
  #       response.body do |chunk|
  #         # Do something with chunk, which is a parsed portion of the returned body
  #       end
  #     end
  #
  # @return [String] Reponse body
  def body(&block)
    call_once
    @body ||= begin
      if entity = @response.get_entity
        EntityConverter.new.read_entity(entity, &block)
      end
    rescue Java::JavaIo::IOException, Java::JavaNet::SocketException, IOError => e
      raise StreamClosedException.new("Could not read from stream: #{e.message}")
    # ensure
    #   @request.release_connection
    end
  end
  alias_method :read_body, :body

  # Returns true if this response has been called (requested and populated) yet
  def called?
    !!@called
  end

  # Return a hash of headers from this response. Will call the request if it has not been called yet.
  #
  # @return [Array<string, obj>] Hash of headers. Keys will be lower-case.
  def headers
    call_once
    @headers
  end

  # Return the value of a single response header. Will call the request if it has not been called yet.
  #
  # @return [String] Value of the header, or nil if not present
  def [](key)
    headers[key.downcase]
  end

  # Return the response code from this request as an integer. Will call the request if it has not been called yet.
  #
  # @return [Integer] The response code
  def code
    call_once
    @code
  end

  # Return the response text for a request as a string (Not Found, Ok, Bad Request, etc). Will call the request if it has not been called yet.
  #
  # @return [String] The response code text
  def message
    call_once
    @message
  end

  # Returns the length of the response body. Returns -1 if content-length is not present in the response.
  #
  # @return [Integer]
  def length
    (headers["content-length"] || -1).to_i
  end

  # Returns an array of {Manticore::Cookie Cookies} associated with this request's execution context
  #
  # @return [Array<Manticore::Cookie>]
  def cookies
    call_once
    @cookies ||= begin
      @context.get_cookie_store.get_cookies.inject({}) do |all, java_cookie|
        c = Cookie.from_java(java_cookie)
        all[c.name] ||= []
        all[c.name] << c
        all
      end
    end
  end

  # Set handler for success responses
  # @param block Proc which will be invoked on a successful response. Block will receive |response, request|
  #
  # @return self
  def on_success(&block)
    @handlers[:success] = block
    self
  end
  alias_method :success, :on_success

  # Set handler for failure responses
  # @param block Proc which will be invoked on a on a failed response. Block will receive an exception object.
  #
  # @return self
  def on_failure(&block)
    @handlers[:failure] = block
    self
  end
  alias_method :failure, :on_failure
  alias_method :fail,    :on_failure

  # Set handler for cancelled requests
  # @param block Proc which will be invoked on a on a cancelled response.
  #
  # @return self
  def on_cancelled(&block)
    @handlers[:cancelled] = block
    self
  end
  alias_method :cancelled,       :on_cancelled
  alias_method :cancellation,    :on_cancelled
  alias_method :on_cancellation, :on_cancelled

  # Set handler for cancelled requests
  # @param block Proc which will be invoked on a on a cancelled response.
  #
  # @return self
  def on_complete(&block)
    @handlers[:complete] = Array(@handlers[:complete]).compact + [block]
    self
  end
  alias_method :complete,     :on_complete
  alias_method :completed,    :on_complete
  alias_method :on_completed, :on_complete

  def times_retried
    @context.get_attribute("retryCount") || 0
  end

  private

  # Implementation of {http://hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/org/apache/http/client/ResponseHandler.html#handleResponse(org.apache.http.HttpResponse) ResponseHandler#handleResponse}
  # @param  response [Response] The underlying Java Response object
  def handleResponse(response)
    @response        = response
    @code            = response.get_status_line.get_status_code
    @message         = response.get_status_line.get_reason_phrase
    @headers         = Hash[* response.get_all_headers.flat_map {|h| [h.get_name.downcase, h.get_value]} ]
    @callback_result = @handlers[:success].call(self)
    nil
  end

  def call_once
    call unless called?
    @called = true
  end

  def execute_complete
    @handlers[:complete].each {|h| h.call(self) }
  end
end

#headers ⇒ Array<string, obj> (readonly)

Return a hash of headers from this response. Will call the request if it has not been called yet.

Returns:

  • (Array<string, obj>) —

    Hash of headers. Keys will be lower-case.



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# File 'lib/manticore/response.rb', line 13

class Response
  include_package "org.apache.http.client"
  include_package "org.apache.http.util"
  include_package "org.apache.http.protocol"
  java_import "org.apache.http.client.protocol.HttpClientContext"
  java_import 'java.util.concurrent.Callable'

  include ResponseHandler
  include Callable

  attr_reader :context, :request, :callback_result, :called

  # Creates a new Response
  #
  # @param  request            [HttpRequestBase] The underlying request object
  # @param  context            [HttpContext] The underlying HttpContext
  def initialize(client, request, context, &block)
    @client  = client
    @request = request
    @context = context
    @handlers = {
      success:   block || Proc.new {|resp| resp.body },
      failure:   Proc.new {|ex| raise ex },
      cancelled: Proc.new {},
      complete:  []
    }
  end

  # Implementation of Callable#call
  # Used by Manticore::Client to invoke the request tied to this response.
  def call
    raise "Already called" if @called
    @called = true
    begin
      @client.execute @request, self, @context
    rescue Java::JavaNet::SocketTimeoutException => e
      ex = Manticore::SocketTimeout
    rescue Java::OrgApacheHttpConn::ConnectTimeoutException => e
      ex = Manticore::ConnectTimeout
    rescue Java::JavaNet::SocketException => e
      ex = Manticore::SocketException
    rescue Java::OrgApacheHttpClient::ClientProtocolException, Java::JavaxNetSsl::SSLHandshakeException, Java::OrgApacheHttpConn::HttpHostConnectException,
           Java::OrgApacheHttp::NoHttpResponseException, Java::OrgApacheHttp::ConnectionClosedException => e
      ex = Manticore::ClientProtocolException
    rescue Java::JavaNet::UnknownHostException => e
      ex = Manticore::ResolutionFailure
    rescue Java::JavaLang::IllegalArgumentException => e
      ex = Manticore::InvalidArgumentException
    rescue Java::JavaLang::Exception => e # Handle anything we may have missed from java
      ex = Manticore::UnknownException
    rescue StandardError => e
      @exception = e
    end

    # TODO: If calling async, execute_complete may fail and then silently swallow exceptions. How do we fix that?
    if ex || @exception
      @exception ||= ex.new(e.cause || e.message)
      @handlers[:failure].call @exception
      execute_complete
      nil
    else
      execute_complete
      self
    end
  end

  def fire_and_forget
    @client.executor.submit self
  end

  # Fetch the final resolved URL for this response. Will call the request if it has not been called yet.
  #
  # @return [String]
  def final_url
    call_once
    last_request = context.get_attribute ExecutionContext.HTTP_REQUEST
    last_host    = context.get_attribute ExecutionContext.HTTP_TARGET_HOST
    host         = last_host.to_uri
    url          = last_request.get_uri
    URI.join(host, url.to_s)
  end

  # Fetch the body content of this response. Will call the request if it has not been called yet.
  # This fetches the input stream in Ruby; this isn't optimal, but it's faster than
  # fetching the whole thing in Java then UTF-8 encoding it all into a giant Ruby string.
  #
  # This permits for streaming response bodies, as well.
  #
  # @example Streaming response
  #
  #     client.get("http://example.com/resource").on_success do |response|
  #       response.body do |chunk|
  #         # Do something with chunk, which is a parsed portion of the returned body
  #       end
  #     end
  #
  # @return [String] Reponse body
  def body(&block)
    call_once
    @body ||= begin
      if entity = @response.get_entity
        EntityConverter.new.read_entity(entity, &block)
      end
    rescue Java::JavaIo::IOException, Java::JavaNet::SocketException, IOError => e
      raise StreamClosedException.new("Could not read from stream: #{e.message}")
    # ensure
    #   @request.release_connection
    end
  end
  alias_method :read_body, :body

  # Returns true if this response has been called (requested and populated) yet
  def called?
    !!@called
  end

  # Return a hash of headers from this response. Will call the request if it has not been called yet.
  #
  # @return [Array<string, obj>] Hash of headers. Keys will be lower-case.
  def headers
    call_once
    @headers
  end

  # Return the value of a single response header. Will call the request if it has not been called yet.
  #
  # @return [String] Value of the header, or nil if not present
  def [](key)
    headers[key.downcase]
  end

  # Return the response code from this request as an integer. Will call the request if it has not been called yet.
  #
  # @return [Integer] The response code
  def code
    call_once
    @code
  end

  # Return the response text for a request as a string (Not Found, Ok, Bad Request, etc). Will call the request if it has not been called yet.
  #
  # @return [String] The response code text
  def message
    call_once
    @message
  end

  # Returns the length of the response body. Returns -1 if content-length is not present in the response.
  #
  # @return [Integer]
  def length
    (headers["content-length"] || -1).to_i
  end

  # Returns an array of {Manticore::Cookie Cookies} associated with this request's execution context
  #
  # @return [Array<Manticore::Cookie>]
  def cookies
    call_once
    @cookies ||= begin
      @context.get_cookie_store.get_cookies.inject({}) do |all, java_cookie|
        c = Cookie.from_java(java_cookie)
        all[c.name] ||= []
        all[c.name] << c
        all
      end
    end
  end

  # Set handler for success responses
  # @param block Proc which will be invoked on a successful response. Block will receive |response, request|
  #
  # @return self
  def on_success(&block)
    @handlers[:success] = block
    self
  end
  alias_method :success, :on_success

  # Set handler for failure responses
  # @param block Proc which will be invoked on a on a failed response. Block will receive an exception object.
  #
  # @return self
  def on_failure(&block)
    @handlers[:failure] = block
    self
  end
  alias_method :failure, :on_failure
  alias_method :fail,    :on_failure

  # Set handler for cancelled requests
  # @param block Proc which will be invoked on a on a cancelled response.
  #
  # @return self
  def on_cancelled(&block)
    @handlers[:cancelled] = block
    self
  end
  alias_method :cancelled,       :on_cancelled
  alias_method :cancellation,    :on_cancelled
  alias_method :on_cancellation, :on_cancelled

  # Set handler for cancelled requests
  # @param block Proc which will be invoked on a on a cancelled response.
  #
  # @return self
  def on_complete(&block)
    @handlers[:complete] = Array(@handlers[:complete]).compact + [block]
    self
  end
  alias_method :complete,     :on_complete
  alias_method :completed,    :on_complete
  alias_method :on_completed, :on_complete

  def times_retried
    @context.get_attribute("retryCount") || 0
  end

  private

  # Implementation of {http://hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/org/apache/http/client/ResponseHandler.html#handleResponse(org.apache.http.HttpResponse) ResponseHandler#handleResponse}
  # @param  response [Response] The underlying Java Response object
  def handleResponse(response)
    @response        = response
    @code            = response.get_status_line.get_status_code
    @message         = response.get_status_line.get_reason_phrase
    @headers         = Hash[* response.get_all_headers.flat_map {|h| [h.get_name.downcase, h.get_value]} ]
    @callback_result = @handlers[:success].call(self)
    nil
  end

  def call_once
    call unless called?
    @called = true
  end

  def execute_complete
    @handlers[:complete].each {|h| h.call(self) }
  end
end

#request ⇒ Object (readonly)

Returns the value of attribute request.



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# File 'lib/manticore/response.rb', line 23

def request
  @request
end

Instance Method Details

#[](key) ⇒ String

Return the value of a single response header. Will call the request if it has not been called yet.

Returns:

  • (String) —

    Value of the header, or nil if not present



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# File 'lib/manticore/response.rb', line 140

def [](key)
  headers[key.downcase]
end

#body(&block) ⇒ String Also known as: read_body

Fetch the body content of this response. Will call the request if it has not been called yet. This fetches the input stream in Ruby; this isn’t optimal, but it’s faster than fetching the whole thing in Java then UTF-8 encoding it all into a giant Ruby string.

This permits for streaming response bodies, as well.

Examples:

Streaming response


client.get("http://example.com/resource").on_success do |response|
  response.body do |chunk|
    # Do something with chunk, which is a parsed portion of the returned body
  end
end

Returns:

  • (String) —

    Reponse body



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# File 'lib/manticore/response.rb', line 110

def body(&block)
  call_once
  @body ||= begin
    if entity = @response.get_entity
      EntityConverter.new.read_entity(entity, &block)
    end
  rescue Java::JavaIo::IOException, Java::JavaNet::SocketException, IOError => e
    raise StreamClosedException.new("Could not read from stream: #{e.message}")
  # ensure
  #   @request.release_connection
  end
end

#call ⇒ Object

Implementation of Callable#call Used by Manticore::Client to invoke the request tied to this response.



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# File 'lib/manticore/response.rb', line 43

def call
  raise "Already called" if @called
  @called = true
  begin
    @client.execute @request, self, @context
  rescue Java::JavaNet::SocketTimeoutException => e
    ex = Manticore::SocketTimeout
  rescue Java::OrgApacheHttpConn::ConnectTimeoutException => e
    ex = Manticore::ConnectTimeout
  rescue Java::JavaNet::SocketException => e
    ex = Manticore::SocketException
  rescue Java::OrgApacheHttpClient::ClientProtocolException, Java::JavaxNetSsl::SSLHandshakeException, Java::OrgApacheHttpConn::HttpHostConnectException,
         Java::OrgApacheHttp::NoHttpResponseException, Java::OrgApacheHttp::ConnectionClosedException => e
    ex = Manticore::ClientProtocolException
  rescue Java::JavaNet::UnknownHostException => e
    ex = Manticore::ResolutionFailure
  rescue Java::JavaLang::IllegalArgumentException => e
    ex = Manticore::InvalidArgumentException
  rescue Java::JavaLang::Exception => e # Handle anything we may have missed from java
    ex = Manticore::UnknownException
  rescue StandardError => e
    @exception = e
  end

  # TODO: If calling async, execute_complete may fail and then silently swallow exceptions. How do we fix that?
  if ex || @exception
    @exception ||= ex.new(e.cause || e.message)
    @handlers[:failure].call @exception
    execute_complete
    nil
  else
    execute_complete
    self
  end
end

#called? ⇒ Boolean

Returns true if this response has been called (requested and populated) yet

Returns:

  • (Boolean) 


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# File 'lib/manticore/response.rb', line 125

def called?
  !!@called
end

#cookies ⇒ Array<Manticore::Cookie>

Returns an array of Cookies associated with this request’s execution context

Returns:



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# File 'lib/manticore/response.rb', line 170

def cookies
  call_once
  @cookies ||= begin
    @context.get_cookie_store.get_cookies.inject({}) do |all, java_cookie|
      c = Cookie.from_java(java_cookie)
      all[c.name] ||= []
      all[c.name] << c
      all
    end
  end
end

#final_url ⇒ String

Fetch the final resolved URL for this response. Will call the request if it has not been called yet.

Returns:

  • (String) 


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# File 'lib/manticore/response.rb', line 86

def final_url
  call_once
  last_request = context.get_attribute ExecutionContext.HTTP_REQUEST
  last_host    = context.get_attribute ExecutionContext.HTTP_TARGET_HOST
  host         = last_host.to_uri
  url          = last_request.get_uri
  URI.join(host, url.to_s)
end

#fire_and_forget ⇒ Object 



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# File 'lib/manticore/response.rb', line 79

def fire_and_forget
  @client.executor.submit self
end

#length ⇒ Integer

Returns the length of the response body. Returns -1 if content-length is not present in the response.

Returns:

  • (Integer) 


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# File 'lib/manticore/response.rb', line 163

def length
  (headers["content-length"] || -1).to_i
end

#message ⇒ String

Return the response text for a request as a string (Not Found, Ok, Bad Request, etc). Will call the request if it has not been called yet.

Returns:

  • (String) —

    The response code text



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# File 'lib/manticore/response.rb', line 155

def message
  call_once
  @message
end

#on_cancelled(&block) ⇒ Object Also known as: cancelled, cancellation, on_cancellation

Set handler for cancelled requests

Parameters:

  • block —

    Proc which will be invoked on a on a cancelled response.

Returns:

  • self



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# File 'lib/manticore/response.rb', line 207

def on_cancelled(&block)
  @handlers[:cancelled] = block
  self
end

#on_complete(&block) ⇒ Object Also known as: complete, completed, on_completed

Set handler for cancelled requests

Parameters:

  • block —

    Proc which will be invoked on a on a cancelled response.

Returns:

  • self



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# File 'lib/manticore/response.rb', line 219

def on_complete(&block)
  @handlers[:complete] = Array(@handlers[:complete]).compact + [block]
  self
end

#on_failure(&block) ⇒ Object Also known as: failure, fail

Set handler for failure responses

Parameters:

  • block —

    Proc which will be invoked on a on a failed response. Block will receive an exception object.

Returns:

  • self



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# File 'lib/manticore/response.rb', line 196

def on_failure(&block)
  @handlers[:failure] = block
  self
end

#on_success(&block) ⇒ Object Also known as: success

Set handler for success responses

Parameters:

  • block —

    Proc which will be invoked on a successful response. Block will receive |response, request|

Returns:

  • self



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# File 'lib/manticore/response.rb', line 186

def on_success(&block)
  @handlers[:success] = block
  self
end

#times_retried ⇒ Object 



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# File 'lib/manticore/response.rb', line 227

def times_retried
  @context.get_attribute("retryCount") || 0
end