JSON logs are not sent when there is more than one output

Before this update, when structured parsing was enabled and messages were forwarded to multiple destinations, they were not deep copied. This resulted in only some of the received logs including the structured message, while others did not. With this update, the configuration generation has been modified to deep copy messages before JSON parsing. As a result, all received messages now have structured messages included, even when they are forwarded to multiple destinations.

1) Deploy a CLF (fake configuration to check the logs in the buffer) instance similar to:   apiVersion: logging.openshift.io/v1 kind: ClusterLogForwarder metadata:   creationTimestamp: "2023-02-17T07:46:36Z"   generation: 6   name: instance   namespace: openshift-logging   resourceVersion: "458342"   uid: 6c328c84-978f-4eb7-aa08-19b189ad8e8d spec:   outputs:   - name: splunk-log-forwarder     type: fluentdForward     url: tcp: //log-forwarder.openshift-logging.svc:24224   - name: splunk-log-forwarder2     type: fluentdForward     url: tcp: //log-forwarder2.openshift-logging.svc:24224   pipelines:   - inputRefs:     - application     name: fluentdtest     outputRefs:     - splunk-log-forwarder     parse: json   - inputRefs:     - application     name: fluentdtest2     outputRefs:     - splunk-log-forwarder2     parse: json 2) Deploy an application that sends logs in json format echo '{ "X-test-date" : "hello this is a test" , "level" : "info" , "message" : "sample log message" }' >> /proc/1/fd/1 3) Check the collector pod that belongs to the node where the application is deployed and check the buffer $ oc rsh $collector # cd / var /lib/fluentd/ # ls default  pos  retry_default  splunk_log_forwarder  splunk_log_forwarder2 4) Check the output for the first pipeline defined in the CLF instance->splunk_log_forwarder and verify that the message is inside the structured field: @timestamp?#2023-02-17T09:32:52.070980426+00:00?docker??container_id?@ee3012d556fe8989a74b08c988bbdcda3ccf3c6581a6c04ee9d44e6dc6606023?kubernetes??container_name?rails-postgresql-example?namespace_name?testjson?pod_name? rails-postgresql-example-1-krwnf?container_imageٚimage-registry.openshift-image-registry.svc:5000/testjson/rails-postgresql-example@sha256:3f7437bae8e63d429abcd65c56f204e7ad34620dfbc6209f373f9711848c8397?container_image_idٚimage-registry.openshift-image-registry.svc:5000/testjson/rails-postgresql-example@sha256:3f7437bae8e63d429abcd65c56f204e7ad34620dfbc6209f373f9711848c8397?pod_id?$a0209988-868f-461a-a6f6-0200c760dafb?pod_ip?10.129.2.20?host?,worker-0.adricluster.lab.psi.pnq2.redhat.com?labels??deployment?rails-postgresql-example-1?deploymentconfig?rails-postgresql-example?name?rails-postgresql-example?master_url?https: //kubernetes. default .svc?namespace_id?$3cfbd87a-b61f-4004-8d42-9f02d1dce597?namespace_labels??kubernetes.io/metadata.name?testjson?flat_labels??%deployment=rails-postgresql-example-1?)deploymentconfig=rails-postgresql-example?name=rails-postgresql-example?level?unknown?hostname?,worker-0.adricluster.lab.psi.pnq2.redhat.com?pipeline_metadata??collector??ipaddr4?10.74.211.175?inputname?fluent-plugin-systemd?name?fluentd?received_at? 2023-02-17T09:32:52.071612+00:00?version?1.14.6 1.6.0?openshift??sequence̺?cluster_id?$89587cc4-a61e-4952-838c-39654b05f256?viaq_msg_id?0NzI2OWQ0NGYtZTBjOC00MjAxLTgyZDYtMTRiZDBjM2FmZGY0?log_type?application?structured??X-test-date?hello this is a test?level?info?message?sample log message 5)Check the output for the second pipeline defined in the CLF instance->splunk_log_forwarder2 and verify that the structured field is empty: @timestamp?#2023-02-17T09:32:51.616106139+00:00?docker??container_id?@ee3012d556fe8989a74b08c988bbdcda3ccf3c6581a6c04ee9d44e6dc6606023?kubernetes??container_name?rails-postgresql-example?namespace_name?testjson?pod_name? rails-postgresql-example-1-krwnf?container_imageٚimage-registry.openshift-image-registry.svc:5000/testjson/rails-postgresql-example@sha256:3f7437bae8e63d429abcd65c56f204e7ad34620dfbc6209f373f9711848c8397?container_image_idٚimage-registry.openshift-image-registry.svc:5000/testjson/rails-postgresql-example@sha256:3f7437bae8e63d429abcd65c56f204e7ad34620dfbc6209f373f9711848c8397?pod_id?$a0209988-868f-461a-a6f6-0200c760dafb?pod_ip?10.129.2.20?host?,worker-0.adricluster.lab.psi.pnq2.redhat.com?labels??deployment?rails-postgresql-example-1?deploymentconfig?rails-postgresql-example?name?rails-postgresql-example?master_url?https: //kubernetes. default .svc?namespace_id?$3cfbd87a-b61f-4004-8d42-9f02d1dce597?namespace_labels??kubernetes.io/metadata.name?testjson?flat_labels??%deployment=rails-postgresql-example-1?)deploymentconfig=rails-postgresql-example?name=rails-postgresql-example?level?unknown?hostname?,worker-0.adricluster.lab.psi.pnq2.redhat.com?pipeline_metadata??collector??ipaddr4?10.74.211.175?inputname?fluent-plugin-systemd?name?fluentd?received_at? 2023-02-17T09:32:51.616733+00:00?version?1.14.6 1.6.0?openshift??sequence̹?cluster_id?$89587cc4-a61e-4952-838c-39654b05f256?viaq_msg_id?0YjQ5NDhhNjUtNDhmNS00NWExLTllOWEtM2Q4NjQxZGZlYmNl?log_type?application?structured???c?I?;J?? These examples are tested for RHOL 5.5 and RHOL 5.6. In addition, I have done different tests playing with the output and the logs are always sent only in the first one that is defined in the CLF instance.