I installed Prometheus 2 on my machine and using this configuration to
publish metrics to another service
remote_write:
- url: http://localhost:8080/api/prom/push
basic_auth:
Another service is in Java, should intercept and enrich Prometheus metrics
and after that forward them to another Prometheus.
Prometheus publishes traffic with Content-Encoding: snappy, Content-Type:
application/x-protobu, X-Prometheus-Remote-Write: 0.1.0 headers
In my service I generated proto java classes against this definition
https://github.com/cortexproject/cortex/blob/master/pkg/ingester/client/cortex.proto#L30
and I'm trying to parse incoming Prometheus bytes like
this WriteRequest.parseFrom(input.getBytes()) and it fails with
*com.google.protobuf.InvalidProtocolBufferException$InvalidWireTypeException:
Protocol message tag had invalid wire type.*
when I try to parse with firstly decoding with Snappy
WriteRequest.parseFrom(Snappy.uncompress(input.getBytes()))
I get error that it is not possible to decompress the message. What am I
doing wrong and how to parse Prometheus Protobufs messages properly?
Thanks.
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