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前往新版Gitcode,体验更适合开发者的 AI 搜索 >>
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9fafd98c
编写于
3月 18, 2019
作者:
wu-sheng
提交者:
GitHub
3月 18, 2019
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Update Trace-Data-Protocol-v2.md
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docs/en/protocols/Trace-Data-Protocol-v2.md
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docs/en/protocols/Trace-Data-Protocol-v2.md
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...
...
@@ -2,13 +2,13 @@
Trace Data Protocol describes the data format between SkyWalking agent/sniffer and backend.
## Overview
Trace data protocol is defined and provided in
[
gRPC format
](
../../../apm-protocol/apm-network/src/main/proto
)
.
Trace data protocol is defined and provided in
[
gRPC format
](
https://github.com/apache/incubator-skywalking-data-collect-protocol
)
.
For each agent/SDK, it needs to register service id and service instance id before reporting any kind of trace
or metric data.
### Step 1. Do register
[
Register service
](
../../../apm-protocol/apm-network/src/main/proto
/register/Register.proto
)
takes charge of
[
Register service
](
https://github.com/apache/incubator-skywalking-data-collect-protocol/tree/master
/register/Register.proto
)
takes charge of
all register methods. At step 1, we need
`doServiceRegister`
, then
`doServiceInstanceRegister`
.
1.
First of all, do
`doServiceRegister`
, input is
**serviceName**
, which could be declared by any UTF-8 String. The return
...
...
@@ -50,6 +50,8 @@ trace id, parent segment id, span id. Others are **entry service instance id**,
**entry endpoint**
,
**parent endpoint**
and
**network address**
. Follow
[
Cross Process Propagation Headers Protocol v2
](
Skywalking-Cross-Process-Propagation-Headers-Protocol-v2.md
)
,
you will know how to get all these fields.
4.
`segment`
in Upstream is the byte array of TraceSegmentObject.
### Step 3. Keep alive.
`ServiceInstancePing#doPing`
should be called per several seconds. Make the backend know this instance is still
alive. Existed
**service instance id**
and
**UUID**
used in
`doServiceInstanceRegister`
are required.
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