kcat:tldr:c1800
This command is using the echo command to pipe the value of the ${message} variable to the kcat command with some specific parameters.
Here is the breakdown of each component:
-
echo ${message}: Theechocommand prints the value of the${message}variable. It is then piped (|) to the next command. -
kcat: It is a command-line tool used for reading from and writing to Apache Kafka clusters. -
-P: This option is used to produce/write messages to the Kafka cluster. -
-t ${topic}: Specifies the topic to which the messages will be produced. The${topic}refers to a variable that should be replaced with the actual name of the topic. -
-b ${brokers}: Specifies the list of Kafka brokers to connect to. The${brokers}refers to a variable that should be replaced with the actual list of Kafka brokers' addresses.
In summary, this command reads the value of the ${message} variable and sends it as a message to a Kafka topic specified in ${topic} using the Kafka brokers listed in ${brokers}.