A newer version is available. For the latest information, see the
current release documentation.
Spansedit
Spans are events captured by an agent occurring in a monitored service.
Span Schemaedit
APM Server uses JSON Schema to validate requests. The specification for spans is defined on GitHub and included below:
{ "$id": "docs/spec/spans/span.json", "type": "object", "description": "An event captured by an agent occurring in a monitored service", "allOf": [ { "$ref": "../timestamp_epoch.json" }, { "$ref": "../span_type.json" }, { "$ref": "../span_subtype.json" }, { "properties": { "id": { "description": "Hex encoded 64 random bits ID of the span.", "type": "string", "maxLength": 1024 }, "transaction_id": { "type": ["string", "null"], "description": "Hex encoded 64 random bits ID of the correlated transaction.", "maxLength": 1024 }, "trace_id": { "description": "Hex encoded 128 random bits ID of the correlated trace.", "type": "string", "maxLength": 1024 }, "parent_id": { "description": "Hex encoded 64 random bits ID of the parent transaction or span.", "type": "string", "maxLength": 1024 }, "child_ids": { "description": "List of successor transactions and/or spans.", "type": ["array", "null"], "minItems": 0, "maxLength": 1024, "items": { "type": "string", "maxLength": 1024 } }, "start": { "type": ["number", "null"], "description": "Offset relative to the transaction's timestamp identifying the start of the span, in milliseconds" }, "sample_rate": { "description": "Sampling rate", "type": ["number", "null"] }, "action": { "type": ["string", "null"], "description": "The specific kind of event within the sub-type represented by the span (e.g. query, connect)", "maxLength": 1024 }, "outcome": { "$ref": "../outcome.json", "description": "The outcome of the span: success, failure, or unknown. Outcome may be one of a limited set of permitted values describing the success or failure of the span. This field can be used for calculating error rates for outgoing requests." }, "context": { "type": ["object", "null"], "description": "Any other arbitrary data captured by the agent, optionally provided by the user", "properties": { "destination": { "type": ["object", "null"], "description": "An object containing contextual data about the destination for spans", "properties": { "address": { "type": ["string", "null"], "description": "Destination network address: hostname (e.g. 'localhost'), FQDN (e.g. 'elastic.co'), IPv4 (e.g. '127.0.0.1') or IPv6 (e.g. '::1')", "maxLength": 1024 }, "port": { "type": ["integer", "null"], "description": "Destination network port (e.g. 443)" }, "service": { "description": "Destination service context", "type": ["object", "null"], "properties": { "type": { "description": "Type of the destination service (e.g. 'db', 'elasticsearch'). Should typically be the same as span.type.", "type": ["string", "null"], "maxLength": 1024 }, "name": { "description": "Identifier for the destination service (e.g. 'http://elastic.co', 'elasticsearch', 'rabbitmq')", "type": ["string", "null"], "maxLength": 1024 }, "resource": { "description": "Identifier for the destination service resource being operated on (e.g. 'http://elastic.co:80', 'elasticsearch', 'rabbitmq/queue_name')", "type": ["string", "null"], "maxLength": 1024 } }, "required": ["type", "name", "resource"] } } }, "db": { "type": ["object", "null"], "description": "An object containing contextual data for database spans", "properties": { "instance": { "type": ["string", "null"], "description": "Database instance name" }, "link": { "type": ["string", "null"], "maxLength": 1024, "description": "Database link" }, "statement": { "type": ["string", "null"], "description": "A database statement (e.g. query) for the given database type" }, "type": { "type": ["string", "null"], "description": "Database type. For any SQL database, \"sql\". For others, the lower-case database category, e.g. \"cassandra\", \"hbase\", or \"redis\"" }, "user": { "type": ["string", "null"], "description": "Username for accessing database" }, "rows_affected": { "type": ["integer", "null"], "description": "Number of rows affected by the SQL statement (if applicable)" } } }, "http": { "type": ["object", "null"], "description": "An object containing contextual data of the related http request.", "properties": { "url": { "type": ["string", "null"], "description": "The raw url of the correlating http request." }, "status_code": { "type": ["integer", "null"], "description": "Deprecated: Use span.context.http.response.status_code instead." }, "method": { "type": ["string", "null"], "maxLength": 1024, "description": "The method of the http request." }, "response": { "$ref": "../http_response.json" } } }, "tags": { "$ref": "../tags.json" }, "service": { "description": "Service related information can be sent per event. Provided information will override the more generic information from metadata, non provided fields will be set according to the metadata information.", "properties": { "agent": { "description": "Name and version of the Elastic APM agent", "type": [ "object", "null" ], "properties": { "name": { "description": "Name of the Elastic APM agent, e.g. \"Python\"", "type": [ "string", "null" ], "maxLength": 1024 }, "version": { "description": "Version of the Elastic APM agent, e.g.\"1.0.0\"", "type": [ "string", "null" ], "maxLength": 1024 }, "ephemeral_id": { "description": "Free format ID used for metrics correlation by some agents", "type": ["string", "null"], "maxLength": 1024 } } }, "name": { "description": "Immutable name of the service emitting this event", "type": [ "string", "null" ], "pattern": "^[a-zA-Z0-9 _-]+$", "maxLength": 1024 } } }, "message": { "$ref": "../message.json" } } }, "duration": { "type": "number", "description": "Duration of the span in milliseconds", "minimum": 0 }, "name": { "type": "string", "description": "Generic designation of a span in the scope of a transaction", "maxLength": 1024 }, "stacktrace": { "type": ["array", "null"], "description": "List of stack frames with variable attributes (eg: lineno, filename, etc)", "items": { "$ref": "../stacktrace_frame.json" }, "minItems": 0 }, "sync": { "type": ["boolean", "null"], "description": "Indicates whether the span was executed synchronously or asynchronously." } }, "required": ["duration", "name", "type", "id","trace_id", "parent_id"] }, { "anyOf":[ {"required": ["timestamp"], "properties": {"timestamp": { "type": "integer" }}}, {"required": ["start"], "properties": {"start": { "type": "number" }}} ] } ] }