postgresql sink PostgreSQL Sink

Provided by: "Apache Software Foundation"

Support Level for this Kamelet is: "Preview"

Send data to a PostgreSQL Database.

This Kamelet expects a JSON as body. The mapping between the JSON fields and parameters is done by key, so if you have the following query:

'INSERT INTO accounts (username,city) VALUES (:#username,:#city)'

The Kamelet needs to receive as input something like:

'{ "username":"oscerd", "city":"Rome"}'

Configuration Options

The following table summarizes the configuration options available for the postgresql-sink Kamelet:

Property Name Description Type Default Example

databaseName

Database Name

Required The Database Name we are pointing.

string

password

Password

Required The password to use for accessing a secured PostgreSQL Database.

string

query

Query

Required The Query to execute against the PostgreSQL Database.

string

INSERT INTO accounts (username,city) VALUES (:#username,:#city)

serverName

Server Name

Required Server Name for the data source.

string

localhost

username

Username

Required The username to use for accessing a secured PostgreSQL Database.

string

serverPort

Server Port

Server Port for the data source.

string

5432

Dependencies

At runtime, the postgresql-sink Kamelet relies upon the presence of the following dependencies:

  • camel:jackson

  • camel:kamelet

  • camel:sql

  • mvn:org.postgresql:postgresql:42.3.3

  • mvn:org.apache.commons:commons-dbcp2:2.9.0

Usage

This section describes how you can use the postgresql-sink.

Knative sink

You can use the postgresql-sink Kamelet as a Knative sink by binding it to a Knative object.

postgresql-sink-binding.yaml
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: postgresql-sink-binding
spec:
  source:
    ref:
      kind: Channel
      apiVersion: messaging.knative.dev/v1
      name: mychannel
  sink:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: postgresql-sink
    properties:
      databaseName: The Database Name
      password: The Password
      query: INSERT INTO accounts (username,city) VALUES (:#username,:#city)
      serverName: localhost
      username: The Username

Prerequisite

You have Camel K installed on the cluster.

Procedure for using the cluster CLI

  1. Save the postgresql-sink-binding.yaml file to your local drive, and then edit it as needed for your configuration.

  2. Run the sink by using the following command:

    kubectl apply -f postgresql-sink-binding.yaml

Procedure for using the Kamel CLI

Configure and run the sink by using the following command:

kamel bind postgresql-sink -p "sink.databaseName=The Database Name" -p "sink.password=The Password" -p "sink.query=INSERT INTO accounts (username,city) VALUES (:#username,:#city)" -p "sink.serverName=localhost" -p "sink.username=The Username" channel:mychannel

This command creates the KameletBinding in the current namespace on the cluster.

Kafka sink

You can use the postgresql-sink Kamelet as a Kafka sink by binding it to a Kafka topic.

postgresql-sink-binding.yaml
apiVersion: camel.apache.org/v1alpha1
kind: KameletBinding
metadata:
  name: postgresql-sink-binding
spec:
  source:
    ref:
      kind: KafkaTopic
      apiVersion: kafka.strimzi.io/v1beta1
      name: my-topic
  sink:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1alpha1
      name: postgresql-sink
    properties:
      databaseName: The Database Name
      password: The Password
      query: INSERT INTO accounts (username,city) VALUES (:#username,:#city)
      serverName: localhost
      username: The Username

Prerequisites

  • You’ve installed Strimzi.

  • You’ve created a topic named my-topic in the current namespace.

  • You have Camel K installed on the cluster.

Procedure for using the cluster CLI

  1. Save the postgresql-sink-binding.yaml file to your local drive, and then edit it as needed for your configuration.

  2. Run the sink by using the following command:

    kubectl apply -f postgresql-sink-binding.yaml

Procedure for using the Kamel CLI

Configure and run the sink by using the following command:

kamel bind postgresql-sink -p "sink.databaseName=The Database Name" -p "sink.password=The Password" -p "sink.query=INSERT INTO accounts (username,city) VALUES (:#username,:#city)" -p "sink.serverName=localhost" -p "sink.username=The Username" kafka.strimzi.io/v1beta1:KafkaTopic:my-topic

This command creates the KameletBinding in the current namespace on the cluster.

Kamelet source file

https://github.com/apache/camel-kamelets/blob/main/kamelets/postgresql-sink.kamelet.yaml

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