setMessageLogging.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<MessageLogging async="false" continueOnError="false" enabled="true" name="setMessageLogging">
    <DisplayName>setMessageLogging</DisplayName>
    <Syslog>
        <!-- add logstash IP or host withhout HTTP scheme-->
        <Host>{LOGSTASH_IP_OR_HOST}</Host>
        <!-- make sure the JSON message is whitespaced free, workaround to parse JSON properly at logstash side-->
        <Message variablePrefix="%" variableSuffix="#">{"systemTimeStamp":"%system.time.year#-%system.time.month#-%system.time.day#T%system.time.hour#:%system.time.minute#:%system.time.second#.%system.time.millisecond#Z","messageId":"%messageid#","statusCode":"%message.status.code#","contentType":"%request.header.Content-Type#","contentLength":"%client.received.content.length#","uri":"%request.uri#","path":"%request.path#","verb":"%request.verb#","meta":{"organization":"%organization.name#","product":"%apigee.apiproduct.name#","application":"%apigee.developer.app.name#","env ":"%environment.name#","virtualhost":"%virtualhost.name#"},"proxy":{"name":"%apiproxy.name#","revision":"%apiproxy.revision#","basepath":"%proxy.basepath#","suffix":"%proxy.pathsuffix#","clientIP":"%client.ip#"},"target":{"host":"%target.host#","basepath":"%request.uri#","statusCode":"%target.response.status.code#","contentLength":"%target.received.content.length#","targetURL":"%request.url#"},"error":{"isError":"%is.error#","isPolicyError":"%apigee.edge.execution.is_policy_error#","isTargetError":"%apigee.edge.execution.is_target_error#","policyErrorPolicyName":"%apigee.edge.execution.fault_policy_name#","policyErrorFlowName":"%apigee.edge.execution.fault_flow_name#","error":"%error#","content":"%error.content#","message":"%error.message#","statusCode":"%error.status.code#","reasonPhrase":"%error.reason.phrase#","transportMessage":"%error.transport.message#","state":"%error.state#"}}</Message>
        <!-- add your logstash TCP port (default 5044) -->
        <Port>{LOGSTASH_PORT}</Port>
        <Protocol>TCP</Protocol>
        <!-- for two-way SSL, add SSLInfo, for more info - https://docs.apigee.com/api-platform/reference/policies/message-logging-policy#syslog-over-tlsssl -->
    </Syslog>
    <IgnoreUnresolvedVariables>true</IgnoreUnresolvedVariables>
    <logLevel>INFO</logLevel>
</MessageLogging>