Name: pcf-metrics-trace-example-golang
Owner: Pivotal Cloud Foundry
Description: null
Created: 2017-02-01 18:14:01.0
Updated: 2017-02-07 00:01:06.0
Pushed: 2017-07-31 20:09:24.0
Homepage: null
Size: 2088
Language: Go
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This is a Go repository with three apps: shopping-cart, orders, and payments.
These apps use custom middleware that carries X-B3-TraceId
and X-B3-SpanId
headers that the CF router injects to trace the calls between them. The traces can then be viewed in PCF-Metrics.
To add tracing the following is necessary:
X-B3-TraceId
and X-B3-SpanId
headers with the values from the current request headers (see /middlewares/proxy_middleware
)Make sure GOPATH is set up. (e.g. export GOPATH=$HOME/go
)
go get github.com/pivotal-cf/pcf-metrics-trace-example-golang
To use the script, you must login as a user that has the ability to assign space permissions and make spaces. It will create a shopping-cart, orders, and payments app that can be used to preview an example trace. You will also need to set the SUFFIX
environment variable to a unique identifier for your tracer applications.
ogin
GOPATH/src/github.com/pivotal-cf/pcf-metrics-trace-example-golang
ripts/deploy.sh
Curl the /checkout
endpoint for the given shopping cart app.
shopping-cart-test.cfapps.io/checkout
To view the trace in PCF-Metrics, go to the shopping-cart app in PCF-Metrics. Find the log corresponding to the /checkout endpoint and click the 'View in Trace Explorer' icon.