AmazonSQS Class

Properties   Methods   Events   Configuration Settings   Errors  

The AmazonSQS Class provides an easy interface to Amazon's Simple Queue Service (SQS).

Syntax

AmazonSQS

Remarks

The AmazonSQS Class allows you to access Amazon's Simple Queue Service (SQS). SQS allows you to create globally accessible queues on Amazon's servers. These queues can be used by developers to transfer data between distributed application components, without losing messages or requiring each component to always be available. A brief synopsis follows but please refer to Amazon SQS documentation for details.

You will first need to sign up for the SQS service and obtain the AccessKey and SecretKey from Amazon. Then you can start creating queues in your account using CreateQueue. You can then start adding message's to the queue using CreateMessage and retrieve the same using ListMessages.

There are other methods such as ListQueues, DeleteQueue, DeleteMessage etc. that further enable you to manage your SQS queues.

Property List


The following is the full list of the properties of the class with short descriptions. Click on the links for further details.

AccessKeyThe Access Key Id for the Amazon Web Services account.
AttributesCountThe number of records in the Attributes arrays.
AttributesNameThe name of the attribute.
AttributesValueThe value of the attribute.
FirewallAutoDetectThis property tells the class whether or not to automatically detect and use firewall system settings, if available.
FirewallTypeThis property determines the type of firewall to connect through.
FirewallHostThis property contains the name or IP address of firewall (optional).
FirewallPasswordThis property contains a password if authentication is to be used when connecting through the firewall.
FirewallPortThis property contains the TCP port for the firewall Host .
FirewallUserThis property contains a user name if authentication is to be used connecting through a firewall.
LocalHostThe name of the local host or user-assigned IP interface through which connections are initiated or accepted.
MaxMessagesThe maximum number of messages retrieved from the queue.
MessagesCountThe number of records in the Messages arrays.
MessagesBodyThe body of the SQS message.
MessagesIdThe ID of the SQS message.
MessagesMD5The MD5 of the SQS message.
MessagesReceiptHandleThe Receipt handle of the SQS message.
OtherHeadersOther headers as determined by the user (optional).
ProxyAuthSchemeThis property is used to tell the class which type of authorization to perform when connecting to the proxy.
ProxyAutoDetectThis property tells the class whether or not to automatically detect and use proxy system settings, if available.
ProxyPasswordThis property contains a password if authentication is to be used for the proxy.
ProxyPortThis property contains the TCP port for the proxy Server (default 80).
ProxyServerIf a proxy Server is given, then the HTTP request is sent to the proxy instead of the server otherwise specified.
ProxySSLThis property determines when to use SSL for the connection to the proxy.
ProxyUserThis property contains a user name, if authentication is to be used for the proxy.
QueuePrefixQueuePrefix can be used to filter the queues listed.
QueuesCountThe number of records in the Queues arrays.
QueuesIdThe ID of the SQS queue.
QueuesUrlThe URL of the SQS queue.
RefererReferer URL/document (optional).
SecretKeyThe Secret Access Key for the Amazon Web Services account.
SSLAcceptServerCertEncodedThe certificate (PEM/base64 encoded).
SSLCertEncodedThe certificate (PEM/base64 encoded).
SSLCertStoreThe name of the certificate store for the client certificate.
SSLCertStorePasswordIf the certificate store is of a type that requires a password, this property is used to specify that password in order to open the certificate store.
SSLCertStoreTypeThe type of certificate store for this certificate.
SSLCertSubjectThe subject of the certificate used for client authentication.
SSLServerCertEncodedThe certificate (PEM/base64 encoded).
StatusLineThe first line of the last server response.
TimeoutA timeout for the class.
UseSSLUse SSL when accessing the service.
VisibilityTimeoutThe visibility duration for messages in the queue.

Method List


The following is the full list of the methods of the class with short descriptions. Click on the links for further details.

AddPermissionAdds a permission to a queue for a specific account, which allows for sharing access to the queue.
ChangeMessageVisibilityChanges the visibility timeout of a message.
ConfigSets or retrieves a configuration setting.
CreateMessageAdds a message to a queue.
CreateQueueCreates an SQS queue.
DeleteMessageDeletes the message specified.
DeleteQueueDeletes a queue.
DoEventsProcesses events from the internal message queue.
GetQueueAttributesReturns all attributes of a queue.
GetXValueRetrieves a valid XPath expression from the HTTP response after calling SendCustomRequest .
InterruptInterrupt the current method.
ListMessagesGets messages from the queue.
ListQueuesLists the queues under the current account.
RemovePermissionThe RemovePermission action revokes any permissions in the queue policy that matches the UserLabel parameter.
ResetResets request-related properties.
ResetHeadersResets all HTTP headers, cookies, and LocalFile.
SendCustomRequestAllows the sending of a custom request to an Amazon web service.
SetQueueAttributeSets an attribute of a queue.

Event List


The following is the full list of the events fired by the class with short descriptions. Click on the links for further details.

ConnectedFired immediately after a connection completes (or fails).
DisconnectedFired when a connection is closed.
EndTransferFired when a document finishes transferring.
ErrorInformation about errors during data delivery.
HeaderFired every time a header line comes in.
MessageFired for each message retrieved from the queue.
QueueFired for each queue of the user.
SSLServerAuthenticationFired after the server presents its certificate to the client.
SSLStatusShows the progress of the secure connection.
StartTransferFired when a document starts transferring (after the headers).
StatusFired when the HTTP status line is received from the server.
TransferFired while a document transfers (delivers document).

Configuration Settings


The following is a list of configuration settings for the class with short descriptions. Click on the links for further details.

APIVersionService's API version.
HTTPMethodSpecifies the HTTP method to use when sending a custom request.
MessageAttributeCountThe number of message attributes.
MessageAttributeDataType[i]The data type of the message attribute.
MessageAttributeName[i]The name of the message attribute.
MessageAttributeValue[i]The value of the message attribute.
MessageDeduplicationIdThe message deduplication ID for the message being created.
MessageGroupIdThe ID of the message group to which the message belongs.
PurgeQueueDeletes all messages in a queue specified by the QueueId.
SignatureVersionThe version of signature used.
SignCustomRequestTells the class to sign the outgoing request.
TransferredDataReturns the entire XML response received from the server.
URLIf set, the default URL will be overridden by this value.
UseEC2RoleCredentialsIf set, authenticate requests with credentials obtained from the specified IAM role attached to the EC2 instance.
UseFIFOQueuesWhether queues should always be created as FIFO queues.
AcceptEncodingUsed to tell the server which types of content encodings the client supports.
AllowHTTPCompressionThis property enables HTTP compression for receiving data.
AllowHTTPFallbackWhether HTTP/2 connections are permitted to fallback to HTTP/1.1.
AppendWhether to append data to LocalFile.
AuthorizationThe Authorization string to be sent to the server.
BytesTransferredContains the number of bytes transferred in the response data.
ChunkSizeSpecifies the chunk size in bytes when using chunked encoding.
CompressHTTPRequestSet to true to compress the body of a PUT or POST request.
EncodeURLIf set to true the URL will be encoded by the class.
FollowRedirectsDetermines what happens when the server issues a redirect.
GetOn302RedirectIf set to true the class will perform a GET on the new location.
HTTP2HeadersWithoutIndexingHTTP2 headers that should not update the dynamic header table with incremental indexing.
HTTPVersionThe version of HTTP used by the class.
IfModifiedSinceA date determining the maximum age of the desired document.
KeepAliveDetermines whether the HTTP connection is closed after completion of the request.
KerberosSPNThe Service Principal Name for the Kerberos Domain Controller.
LogLevelThe level of detail that is logged.
MaxRedirectAttemptsLimits the number of redirects that are followed in a request.
NegotiatedHTTPVersionThe negotiated HTTP version.
OtherHeadersOther headers as determined by the user (optional).
ProxyAuthorizationThe authorization string to be sent to the proxy server.
ProxyAuthSchemeThe authorization scheme to be used for the proxy.
ProxyPasswordA password if authentication is to be used for the proxy.
ProxyPortPort for the proxy server (default 80).
ProxyServerName or IP address of a proxy server (optional).
ProxyUserA user name if authentication is to be used for the proxy.
SentHeadersThe full set of headers as sent by the client.
StatusLineThe first line of the last response from the server.
TransferredDataThe contents of the last response from the server.
TransferredDataLimitThe maximum number of incoming bytes to be stored by the class.
TransferredHeadersThe full set of headers as received from the server.
TransferredRequestThe full request as sent by the client.
UseChunkedEncodingEnables or Disables HTTP chunked encoding for transfers.
UseIDNsWhether to encode hostnames to internationalized domain names.
UsePlatformHTTPClientWhether or not to use the platform HTTP client.
UserAgentInformation about the user agent (browser).
ConnectionTimeoutSets a separate timeout value for establishing a connection.
FirewallAutoDetectTells the class whether or not to automatically detect and use firewall system settings, if available.
FirewallHostName or IP address of firewall (optional).
FirewallPasswordPassword to be used if authentication is to be used when connecting through the firewall.
FirewallPortThe TCP port for the FirewallHost;.
FirewallTypeDetermines the type of firewall to connect through.
FirewallUserA user name if authentication is to be used connecting through a firewall.
KeepAliveIntervalThe retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received.
KeepAliveRetryCountThe number of keep-alive packets to be sent before the remotehost is considered disconnected.
KeepAliveTimeThe inactivity time in milliseconds before a TCP keep-alive packet is sent.
LingerWhen set to True, connections are terminated gracefully.
LingerTimeTime in seconds to have the connection linger.
LocalHostThe name of the local host through which connections are initiated or accepted.
LocalPortThe port in the local host where the class binds.
MaxLineLengthThe maximum amount of data to accumulate when no EOL is found.
MaxTransferRateThe transfer rate limit in bytes per second.
ProxyExceptionsListA semicolon separated list of hosts and IPs to bypass when using a proxy.
TCPKeepAliveDetermines whether or not the keep alive socket option is enabled.
TcpNoDelayWhether or not to delay when sending packets.
UseIPv6Whether to use IPv6.
LogSSLPacketsControls whether SSL packets are logged when using the internal security API.
OpenSSLCADirThe path to a directory containing CA certificates.
OpenSSLCAFileName of the file containing the list of CA's trusted by your application.
OpenSSLCipherListA string that controls the ciphers to be used by SSL.
OpenSSLPrngSeedDataThe data to seed the pseudo random number generator (PRNG).
ReuseSSLSessionDetermines if the SSL session is reused.
SSLCACertFilePathsThe paths to CA certificate files on Unix/Linux.
SSLCACertsA newline separated list of CA certificate to use during SSL client authentication.
SSLCipherStrengthThe minimum cipher strength used for bulk encryption.
SSLEnabledCipherSuitesThe cipher suite to be used in an SSL negotiation.
SSLEnabledProtocolsUsed to enable/disable the supported security protocols.
SSLEnableRenegotiationWhether the renegotiation_info SSL extension is supported.
SSLIncludeCertChainWhether the entire certificate chain is included in the SSLServerAuthentication event.
SSLNegotiatedCipherReturns the negotiated ciphersuite.
SSLNegotiatedCipherStrengthReturns the negotiated ciphersuite strength.
SSLNegotiatedCipherSuiteReturns the negotiated ciphersuite.
SSLNegotiatedKeyExchangeReturns the negotiated key exchange algorithm.
SSLNegotiatedKeyExchangeStrengthReturns the negotiated key exchange algorithm strength.
SSLNegotiatedProtocolReturns the negotiated protocol version.
SSLProviderThe name of the security provider to use.
SSLSecurityFlagsFlags that control certificate verification.
SSLServerCACertsA newline separated list of CA certificate to use during SSL server certificate validation.
TLS12SignatureAlgorithmsDefines the allowed TLS 1.2 signature algorithms when UseInternalSecurityAPI is True.
TLS12SupportedGroupsThe supported groups for ECC.
TLS13KeyShareGroupsThe groups for which to pregenerate key shares.
TLS13SignatureAlgorithmsThe allowed certificate signature algorithms.
TLS13SupportedGroupsThe supported groups for (EC)DHE key exchange.
AbsoluteTimeoutDetermines whether timeouts are inactivity timeouts or absolute timeouts.
FirewallDataUsed to send extra data to the firewall.
InBufferSizeThe size in bytes of the incoming queue of the socket.
OutBufferSizeThe size in bytes of the outgoing queue of the socket.

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