class Streams extends Supplier[Topology]
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- new Streams(kafkaConfiguration: KafkaConfiguration)
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def
initialize(topology: Topology): Topology
This provides a topology that is shown in the flow chart below
This provides a topology that is shown in the flow chart below
+---------------+ | | | proto-spans | | | +-------+-------+ | +---------V----------+ | | +----+ span-accumulator +----+ | | | | | +--------------------+ | | | +---------V---------+ +------------V------------+ | | | | | latency-producer | | nodes-n-edges-producer | | | | | +---------+---------+ +------------+------------+ | | +--------V--------+ +---------V---------+ | | | | | metric-sink | | graph-nodes-sink | | | | | +-----------------+ +-------------------+
Source:
proto-spans : Reads a Kafka topic of spans serialized in protobuf format
Processors:
span-accumulator : Aggregates incoming spans for specified time to find matching client-server spans latency-producer : Computes and emits network latency from the span pairs produced by span-accumulator nodes-n-edges-producer : This processor produces, from the span pairs produced by span-accumulator, a simple graph relationship between the services in the form: service --(operation)--> service Sinks:
metric-sink : Output of latency-producer (MetricPoint) is serialized using MessagePack and sent to a Kafka topic graph-nodes-sink : Output of nodes-n-edges-producer is serialized a json string and sent to a Kafka topic
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