redis_hash
Sets Redis hash objects using the HMSET command.
- Common
- Advanced
# Common config fields, showing default valuesoutput:label: ""redis_hash:url: tcp://localhost:6379key: ""walk_metadata: falsewalk_json_object: falsefields: {}max_in_flight: 1
# All config fields, showing default valuesoutput:label: ""redis_hash:url: tcp://localhost:6379kind: simplemaster: ""tls:enabled: falseskip_cert_verify: falseenable_renegotiation: falseroot_cas: ""root_cas_file: ""client_certs: []key: ""walk_metadata: falsewalk_json_object: falsefields: {}max_in_flight: 1
The field key
supports
interpolation functions, allowing
you to create a unique key for each message.
The field fields
allows you to specify an explicit map of field
names to interpolated values, also evaluated per message of a batch:
output:redis_hash:url: tcp://localhost:6379key: ${!json("id")}fields:topic: ${!meta("kafka_topic")}partition: ${!meta("kafka_partition")}content: ${!json("document.text")}
If the field walk_metadata
is set to true
then Benthos
will walk all metadata fields of messages and add them to the list of hash
fields to set.
If the field walk_json_object
is set to true
then
Benthos will walk each message as a JSON object, extracting keys and the string
representation of their value and adds them to the list of hash fields to set.
The order of hash field extraction is as follows:
- Metadata (if enabled)
- JSON object (if enabled)
- Explicit fields
Where latter stages will overwrite matching field names of a former stage.
Performance​
This output benefits from sending multiple messages in flight in parallel for
improved performance. You can tune the max number of in flight messages with the
field max_in_flight
.
Fields​
url
​
The URL of the target Redis server. Database is optional and is supplied as the URL path. The scheme tcp
is equivalent to redis
.
Type: string
Default: "tcp://localhost:6379"
# Examplesurl: :6397url: localhost:6397url: redis://localhost:6379url: redis://:foopassword@redisplace:6379url: redis://localhost:6379/1url: redis://localhost:6379/1,redis://localhost:6380/1
kind
​
Specifies a simple, cluster-aware, or failover-aware redis client.
Type: string
Default: "simple"
# Exampleskind: simplekind: clusterkind: failover
master
​
Name of the redis master when kind
is failover
Type: string
Default: ""
# Examplesmaster: mymaster
tls
​
Custom TLS settings can be used to override system defaults.
Troubleshooting
Some cloud hosted instances of Redis (such as Azure Cache) might need some hand holding in order to establish stable connections. Unfortunately, it is often the case that TLS issues will manifest as generic error messages such as "i/o timeout". If you're using TLS and are seeing connectivity problems consider setting enable_renegotiation
to true
, and ensuring that the server supports at least TLS version 1.2.
Type: object
tls.enabled
​
Whether custom TLS settings are enabled.
Type: bool
Default: false
tls.skip_cert_verify
​
Whether to skip server side certificate verification.
Type: bool
Default: false
tls.enable_renegotiation
​
Whether to allow the remote server to repeatedly request renegotiation. Enable this option if you're seeing the error message local error: tls: no renegotiation
.
Type: bool
Default: false
Requires version 3.45.0 or newer
tls.root_cas
​
An optional root certificate authority to use. This is a string, representing a certificate chain from the parent trusted root certificate, to possible intermediate signing certificates, to the host certificate.
Type: string
Default: ""
# Examplesroot_cas: |------BEGIN CERTIFICATE-----...-----END CERTIFICATE-----
tls.root_cas_file
​
An optional path of a root certificate authority file to use. This is a file, often with a .pem extension, containing a certificate chain from the parent trusted root certificate, to possible intermediate signing certificates, to the host certificate.
Type: string
Default: ""
# Examplesroot_cas_file: ./root_cas.pem
tls.client_certs
​
A list of client certificates to use. For each certificate either the fields cert
and key
, or cert_file
and key_file
should be specified, but not both.
Type: array
Default: []
# Examplesclient_certs:- cert: fookey: barclient_certs:- cert_file: ./example.pemkey_file: ./example.key
tls.client_certs[].cert
​
A plain text certificate to use.
Type: string
Default: ""
tls.client_certs[].key
​
A plain text certificate key to use.
Type: string
Default: ""
tls.client_certs[].cert_file
​
The path to a certificate to use.
Type: string
Default: ""
tls.client_certs[].key_file
​
The path of a certificate key to use.
Type: string
Default: ""
key
​
The key for each message, function interpolations should be used to create a unique key per message. This field supports interpolation functions.
Type: string
Default: ""
# Exampleskey: ${!meta("kafka_key")}key: ${!json("doc.id")}key: ${!count("msgs")}
walk_metadata
​
Whether all metadata fields of messages should be walked and added to the list of hash fields to set.
Type: bool
Default: false
walk_json_object
​
Whether to walk each message as a JSON object and add each key/value pair to the list of hash fields to set.
Type: bool
Default: false
fields
​
A map of key/value pairs to set as hash fields. This field supports interpolation functions.
Type: object
Default: {}
max_in_flight
​
The maximum number of messages to have in flight at a given time. Increase this to improve throughput.
Type: int
Default: 1