sftp

EXPERIMENTAL

This component is experimental and therefore subject to change or removal outside of major version releases.

Consumes files from a server over SFTP.

Introduced in version 3.39.0.

Common

# Common config fields, showing default values
input:
  label: ""
  sftp:
    address: ""
    credentials:
      username: ""
      password: ""
      private_key_file: ""
      private_key_pass: ""
    paths: []
    codec: all-bytes
    watcher:
      enabled: false
      minimum_age: 1s
      poll_interval: 1s
      cache: ""

Advanced

# All config fields, showing default values
input:
  label: ""
  sftp:
    address: ""
    credentials:
      username: ""
      password: ""
      private_key_file: ""
      private_key_pass: ""
    paths: []
    codec: all-bytes
    delete_on_finish: false
    max_buffer: 1000000
    watcher:
      enabled: false
      minimum_age: 1s
      poll_interval: 1s
      cache: ""

Metadata

This input adds the following metadata fields to each message:

- sftp_path

You can access these metadata fields using function interpolation.

Fields

address

The address of the server to connect to that has the target files.

Type: string
Default: ""

credentials

The credentials to use to log into the server.

Type: object

credentials.username

The username to connect to the SFTP server.

Type: string
Default: ""

credentials.password

The password for the username to connect to the SFTP server.

Type: string
Default: ""

credentials.private_key_file

The private key for the username to connect to the SFTP server.

Type: string
Default: ""

credentials.private_key_pass

Optional passphrase for private key.

Type: string
Default: ""

paths

A list of paths to consume sequentially. Glob patterns are supported.

Type: array
Default: []

codec

The way in which the bytes of a data source should be converted into discrete messages, codecs are useful for specifying how large files or contiunous streams of data might be processed in small chunks rather than loading it all in memory. It's possible to consume lines using a custom delimiter with the delim:x codec, where x is the character sequence custom delimiter. Codecs can be chained with /, for example a gzip compressed CSV file can be consumed with the codec gzip/csv.

Type: string
Default: "all-bytes"

Option	Summary
auto	EXPERIMENTAL: Attempts to derive a codec for each file based on information such as the extension. For example, a .tar.gz file would be consumed with the gzip/tar codec. Defaults to all-bytes.
all-bytes	Consume the entire file as a single binary message.
chunker:x	Consume the file in chunks of a given number of bytes.
csv	Consume structured rows as comma separated values, the first row must be a header row.
csv:x	Consume structured rows as values separated by a custom delimiter, the first row must be a header row. The custom delimiter must be a single character, e.g. the codec "csv:\t" would consume a tab delimited file.
delim:x	Consume the file in segments divided by a custom delimiter.
gzip	Decompress a gzip file, this codec should precede another codec, e.g. gzip/all-bytes, gzip/tar, gzip/csv, etc.
lines	Consume the file in segments divided by linebreaks.
multipart	Consumes the output of another codec and batches messages together. A batch ends when an empty message is consumed. For example, the codec lines/multipart could be used to consume multipart messages where an empty line indicates the end of each batch.
regex:(?m)^\d\d:\d\d:\d\d	Consume the file in segments divided by regular expression.
tar	Parse the file as a tar archive, and consume each file of the archive as a message.

# Examples

codec: lines

codec: "delim:\t"

codec: delim:foobar

codec: gzip/csv

delete_on_finish

Whether to delete files from the server once they are processed.

Type: bool
Default: false

max_buffer

The largest token size expected when consuming delimited files.

Type: int
Default: 1000000

watcher

An experimental mode whereby the input will periodically scan the target paths for new files and consume them, when all files are consumed the input will continue polling for new files.

Type: object
Requires version 3.42.0 or newer

watcher.enabled

Whether file watching is enabled.

Type: bool
Default: false

watcher.minimum_age

The minimum period of time since a file was last updated before attempting to consume it. Increasing this period decreases the likelihood that a file will be consumed whilst it is still being written to.

Type: string
Default: "1s"

# Examples

minimum_age: 10s

minimum_age: 1m

minimum_age: 10m

watcher.poll_interval

The interval between each attempt to scan the target paths for new files.

Type: string
Default: "1s"

# Examples

poll_interval: 100ms

poll_interval: 1s

watcher.cache

A cache resource for storing the paths of files already consumed.

Type: string
Default: ""