Scanning Files

The commons configuration for Connect File Pulse.

The connector must be configured with a specific FSDirectoryWalker
that will be responsible for scanning an input directory to find files eligible to be streamed in Kafka.

The default FSDirectoryWalker implementation is :


The FilePulseSourceConnector periodically triggers a file system scan of the directory specified in the connector property. Scan is executed in a background-thread invoking the configured FSDirectoryWalker.

Configuring Directory Scan (using LocalFSDirectoryWalker)

fs.scanner.classThe class used to scan file systemclassio.streamthoughts.kafka.connect.filepulse.scanner.local.LocalFSDirectoryWalkermedium input directory to scanstring-high
fs.scan.interval.msTime interval in milliseconds at wish the input directory is scannedlong10000high
fs.scan.filtersThe comma-separated list of fully qualified class names of the filter-filters to be uses to list eligible input fileslist-medium
fs.recursive.scan.enableBoolean indicating whether local directory should be recursively scannedbooleantruemedium
allow.tasks.reconfiguration.after.timeout.msSpecifies the timeout (in milliseconds) for the connector to allow tasks to be reconfigured when new files are detected, even if some tasks are still being processedlongLong.MAX_VALUEmedium

Filtering input files

You can configure one or more FileFilter that will be used to determine if a file should be scheduled for processing or ignored. All files that are filtered out are simply ignored and remain untouched on the file system until the next scan. At the next scan, previously filtered files will be evaluated again to determine if they are now eligible for processing.

FilePulse packs with the following built-in filters :


The IgnoreHiddenFileFilter can be used to filter hidden files from being read.

Configuration example



The LastModifiedFileFilter can be used to filter files that have been modified to recently based on their last modified date property.

# The last modified time for a file can be accepted (default: 5000)


The RegexFileFilter can be used to filter files that do not match the specified regex.

# The regex pattern used to matches input files

Supported File types

LocalFSDirectoryWalker will try to detect if a file needs to be decompressed by probing its content type or its extension (javadoc : Files#probeContentType)

The connector supports the following content types :

  • GZIP : application/x-gzip
  • TAR : application/x-tar
  • ZIP : application/x-zip-compressed or application/zip