Chapter 52. MongoDB Source Consume documents from MongoDB. If the persistentTailTracking option will be enabled, the consumer will keep track of the last consumed message and on the restart, the consumption will restart from that message. In case of persistentTailTracking enabled, the tailTrackIncreasingField must be provided (by default it is optional). If the persistentTailTracking option won't be enabled, the consumer will consume the whole collection and wait in idle for new documents to consume. 52.1. Configuration Options The following table summarizes the configuration options available for the mongodb-source Kamelet: Property Name Description Type Default Example collection * MongoDB Collection Sets the name of the MongoDB collection to bind to this endpoint. string database * MongoDB Database Sets the name of the MongoDB database to target. string hosts * MongoDB Hosts Comma separated list of MongoDB Host Addresses in host:port format. string password * MongoDB Password User password for accessing MongoDB. string username * MongoDB Username Username for accessing MongoDB. The username must be present in the MongoDB's authentication database (authenticationDatabase). By default, the MongoDB authenticationDatabase is 'admin'. string persistentTailTracking MongoDB Persistent Tail Tracking Enable persistent tail tracking, which is a mechanism to keep track of the last consumed message across system restarts. The time the system is up, the endpoint will recover the cursor from the point where it last stopped slurping records. boolean false tailTrackIncreasingField MongoDB Tail Track Increasing Field Correlation field in the incoming record which is of increasing nature and will be used to position the tailing cursor every time it is generated. string Note Fields marked with an asterisk (*) are mandatory. 52.2. Dependencies At runtime, the mongodb-source Kamelet relies upon the presence of the following dependencies: camel:kamelet camel:mongodb camel:jackson 52.3. Usage This section describes how you can use the mongodb-source . 52.3.1. Knative Source You can use the mongodb-source Kamelet as a Knative source by binding it to a Knative object. mongodb-source-binding.yaml apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: mongodb-source-binding spec: source: ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: mongodb-source properties: collection: "The MongoDB Collection" database: "The MongoDB Database" hosts: "The MongoDB Hosts" password: "The MongoDB Password" username: "The MongoDB Username" sink: ref: kind: Channel apiVersion: messaging.knative.dev/v1 name: mychannel 52.3.1.1. Prerequisite Make sure you have "Red Hat Integration - Camel K" installed into the OpenShift cluster you're connected to. 52.3.1.2. Procedure for using the cluster CLI Save the mongodb-source-binding.yaml file to your local drive, and then edit it as needed for your configuration. Run the source by using the following command: oc apply -f mongodb-source-binding.yaml 52.3.1.3. Procedure for using the Kamel CLI Configure and run the source by using the following command: kamel bind mongodb-source -p "source.collection=The MongoDB Collection" -p "source.database=The MongoDB Database" -p "source.hosts=The MongoDB Hosts" -p "source.password=The MongoDB Password" -p "source.username=The MongoDB Username" channel:mychannel This command creates the KameletBinding in the current namespace on the cluster. 52.3.2. Kafka Source You can use the mongodb-source Kamelet as a Kafka source by binding it to a Kafka topic. mongodb-source-binding.yaml apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: mongodb-source-binding spec: source: ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: mongodb-source properties: collection: "The MongoDB Collection" database: "The MongoDB Database" hosts: "The MongoDB Hosts" password: "The MongoDB Password" username: "The MongoDB Username" sink: ref: kind: KafkaTopic apiVersion: kafka.strimzi.io/v1beta1 name: my-topic 52.3.2.1. Prerequisites Ensure that you've installed the AMQ Streams operator in your OpenShift cluster and created a topic named my-topic in the current namespace. Make also sure you have "Red Hat Integration - Camel K" installed into the OpenShift cluster you're connected to. 52.3.2.2. Procedure for using the cluster CLI Save the mongodb-source-binding.yaml file to your local drive, and then edit it as needed for your configuration. Run the source by using the following command: oc apply -f mongodb-source-binding.yaml 52.3.2.3. Procedure for using the Kamel CLI Configure and run the source by using the following command: kamel bind mongodb-source -p "source.collection=The MongoDB Collection" -p "source.database=The MongoDB Database" -p "source.hosts=The MongoDB Hosts" -p "source.password=The MongoDB Password" -p "source.username=The MongoDB Username" kafka.strimzi.io/v1beta1:KafkaTopic:my-topic This command creates the KameletBinding in the current namespace on the cluster. 52.4. Kamelet source file https://github.com/openshift-integration/kamelet-catalog/mongodb-source.kamelet.yaml

Commands:
apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: mongodb-source-binding spec: source: ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: mongodb-source properties: collection: "The MongoDB Collection" database: "The MongoDB Database" hosts: "The MongoDB Hosts" password: "The MongoDB Password" username: "The MongoDB Username" sink: ref: kind: Channel apiVersion: messaging.knative.dev/v1 name: mychannel
apply -f mongodb-source-binding.yaml
kamel bind mongodb-source -p "source.collection=The MongoDB Collection" -p "source.database=The MongoDB Database" -p "source.hosts=The MongoDB Hosts" -p "source.password=The MongoDB Password" -p "source.username=The MongoDB Username" channel:mychannel
apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: mongodb-source-binding spec: source: ref: kind: Kamelet apiVersion: camel.apache.org/v1alpha1 name: mongodb-source properties: collection: "The MongoDB Collection" database: "The MongoDB Database" hosts: "The MongoDB Hosts" password: "The MongoDB Password" username: "The MongoDB Username" sink: ref: kind: KafkaTopic apiVersion: kafka.strimzi.io/v1beta1 name: my-topic
apply -f mongodb-source-binding.yaml
kamel bind mongodb-source -p "source.collection=The MongoDB Collection" -p "source.database=The MongoDB Database" -p "source.hosts=The MongoDB Hosts" -p "source.password=The MongoDB Password" -p "source.username=The MongoDB Username" kafka.strimzi.io/v1beta1:KafkaTopic:my-topic