Metrics

Metrics contain application metric data captured by an APM agent.

Metric Schema

APM Server uses JSON Schema to validate requests. The specification for metrics is defined on GitHub and included below:

{
    "$id": "docs/spec/metricsets/metricset.json",
    "type": "object",
    "description": "Data captured by an agent representing an event occurring in a monitored service",
    "allOf": [
        { "$ref": "../timestamp_epoch.json"},
        { "$ref": "../span_type.json" },
        { "$ref": "../span_subtype.json" },
        { "$ref": "../transaction_name.json" },
        { "$ref": "../transaction_type.json" },
        {
            "properties": {
                "samples": {
                    "type": [
                        "object"
                    ],
                    "description": "Sampled application metrics collected from the agent.",
                    "patternProperties": {
                        "^[^*\"]*$": {
                            "$ref": "sample.json"
                        }
                    },
                    "additionalProperties": false
                },
                "tags": {
                    "$ref": "../tags.json"
                }
            },
            "required": ["samples"]
        }
    ]
}

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