我有一个从Mule中的SFTP连接器获取文件的流程。应用程序无权在处理后删除文件。
为了防止重复处理,应用程序使用基于文件名和时间戳的幂等过滤器。
SFTP未返回消息中每个文件的时间戳。因此,message.inboundProperties.timestamp将返回null。
<!-- SFTP connector -->
<sftp:connector
name="SFTP_Origin"
validateConnections="true"
pollingFrequency="${sftp.origin.pollingFrequency:60000}"
fileAge="${sftp.origin.fileAge:60000}"
duplicateHandling="overwrite"
doc:name="SFTP"
archiveDir="${local.archive.directory}"/>
<!-- Move XML files from one SFTP location to another location.
Archive each file locally on the mule server in the event the file transfer fails.
Upon failure, notify those responsible so that action can be remedied. -->
<flow name="TransferFilesViaSFTP_Flow" >
<sftp:inbound-endpoint
connector-ref="SFTP_Origin"
host="${sftp.origin.host}"
port="${sftp.origin.port:22}"
path="${sftp.origin.path}"
user="${sftp.origin.user}"
password="${sftp.origin.password}"
responseTimeout="10000"
archiveDir="${local.archive.directory}"
doc:name="InboundSFTPEndpoint">
<!-- Use RegEx filter to filter only files with within the proper date format YYYYMMdd
Range of dates are from 19000101 to 20991231 -->
<file:filename-regex-filter pattern="${regex.filter:filename(.*)xml}" caseSensitive="false"/>
</sftp:inbound-endpoint>
<!-- Get the files via SFTP -->
<logger
message="#[message]"
level="INFO"
category="sftp"
doc:name="Logger"/>
<!-- Eliminate redundant file transfers by filtering out files that have
been transfered previously, unless their timestamp has changed. -->
<idempotent-message-filter
idExpression="#[message.inboundProperties.originalFilename + '-' +
message.inboundProperties.timestamp]"
storePrefix="prefix"
doc:name="Filter out redundant files transfers">
<simple-text-file-store
name="filesMessages"
directory="${idempotent.directory}"/>
</idempotent-message-filter>
<!-- log event information -->
<logger
message="#['Payload after SFTP is ' + payload]"
level="DEBUG"
doc:name="Payload Logger"
category="sftp"/>
<!-- Send the files to Windows Share -->
<file:outbound-endpoint
path="${windows.share.path}"
connector-ref="WindowsShareFile"
responseTimeout="10000"
doc:name="File"/>
<!-- log event information -->
<logger
message="#['file ' + message.inboundProperties.'originalFilename' + ' successfully processed.']"
level="INFO"
category="sftp"
doc:name="Logger: Success"/>
<!-- Based on property, smtp.onSuccess.sendEmail, notify when files have been moved successfully. -->
<expression-filter
expression="#[${smtp.onSuccess.sendEmail:false}]"
doc:name="onSuccess Send Email"/>
<set-session-variable
variableName="emailSubject"
value="#['Mule Flow Successful']"
doc:name="emailSubject"/>
<flow-ref
name="aggregateSuccessfulFilesTransferForEmail_Subflow"
doc:name="aggregateSuccessfulFilesTransferForEmail_Subflow"/>
<!-- default exception strategy -->
<exception-strategy
ref="transferFilesExceptionStrategy"
doc:name="Reference Exception Strategy"/>
</flow>
我在Mulesoft上发现了一个似乎未解决的问题。 https://www.mulesoft.org/jira/browse/MULE-7175
是否有替代方法可以从SFTP连接器获取文件的时间戳?
答案 0 :(得分:3)
如果文件足够小以适合内存:
byte[]
sftp:inbound-endpoint
计算有效负载的SHA哈希,而不是尝试使用远程文件的时间戳。无论如何它会起作用并且更可靠:
idExpression="#[message.inboundProperties.originalFilename + '-' +
org.apache.commons.codec.digest.DigestUtils.sha256Hex(message.payload)]"