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GetTelemetrySubscriptionsRequestV0 {
 	ClientInstanceId uuid                // UUID4 unique for this client instance.
										 // Must be set to Null on the first request, and to the returned ClientInstanceId
                                         // from the first response for all subsequent requests to any broker.
}

GetTelemetrySubscriptionsResponseV0 {
 	ThrottleTime int32					 // Standard throttling.
	ErrorCode int16						 // Error code.
    ClientInstanceId uuid                // Assigned client instance id if ClientInstanceId was Null in the request, else Null.
    SubscriptionId int32                 // Unique identifier for the current subscription set for this client instance.
    AcceptedCompressionTypes Array[int8] // The compression types the broker accepts for PushTelemetryRequest.CompressionType
                                         // as listed in MessageHeaderV2.Attributes.CompressionType. The array will be sorted in
                                         // preference order from higher to lower. The CompressionType of NONE will not be
                                         // present in the response from the broker, though the broker does support uncompressed
                                         // client telemetry if none of the accepted compression codecs are supported by the client.
    PushIntervalMs int32				 // Configured push interval, which is the lowest configured interval in the current subscription set.
    DeltaTemporality bool                // If True; monotonic/counter metrics are to be emitted as deltas to the previous sample.
                                         // If False; monotonic/counter metrics are to be emitted as cumulative absolute values.
	RequestedMetrics Array[string]		 // Requested telemetry metrics prefix string match.
										 // Empty array: No metrics subscribed.
										 // Array[0] empty string: All metrics subscribed.
										 // Array[..]: prefix string match.
}

PushTelemetryRequestV0 {
	ClientInstanceId uuid                // UUID4 unique for this client instance, as retrieved in the first GetTelemetrySubscriptionsRequest.
    SubscriptionId int32                 // SubscriptionId from the GetTelemetrySubscriptionsResponse for the collected metrics.
	Terminating bool                     // Client is terminating.
    CompressionType int8                 // Compression codec used for .Metrics (ZSTD, LZ4, Snappy, GZIP, None).
                                         // Same values as that of the current MessageHeaderV2.Attributes.
	Metrics binary.                       // Metrics encoded in OpenTelemetry MetricsData v1 protobuf format.
}

PushTelemetryResponseV0 {
	ThrottleTime int32                   // Standard throttling.
	ErrorCode int16                      // Error code.
}