4.2 Test Attribute Processor

In this exercise, we will delete the user.account_password, update the user.phone_number attribute and hash the user.email in the span data before it is exported by the Agent.

Exercise

Start the Gateway: In your Gateway terminal window start the Gateway.

../otelcol --config=gateway.yaml

Start the Agent: In your Agent terminal window start the Agent.

../otelcol --config=agent.yaml

Start the Load Generator: In the Loadgen terminal window start the loadgen:

../loadgen -count 1

Check the debug output: For both the Agent and Gateway confirm that user.account_password has been removed, and both user.phone_number & user.email have been updated:

   -> user.name: Str(George Lucas)
   -> user.phone_number: Str(UNKNOWN NUMBER)
   -> user.email: Str(62d5e03d8fd5808e77aee5ebbd90cf7627a470ae0be9ffd10e8025a4ad0e1287)
   -> payment.amount: Double(51.71)
   -> user.visa: Str(4111 1111 1111 1111)
   -> user.amex: Str(3782 822463 10005)
   -> user.mastercard: Str(5555 5555 5555 4444)

    -> user.name: Str(George Lucas)
    -> user.phone_number: Str(+1555-867-5309)
    -> user.email: Str(george@deathstar.email)
    -> user.password: Str(LOTR>StarWars1-2-3)
    -> user.visa: Str(4111 1111 1111 1111)
    -> user.amex: Str(3782 822463 10005)
    -> user.mastercard: Str(5555 5555 5555 4444)
    -> payment.amount: Double(95.22)

Check file output: Using jq validate that user.account_password has been removed, and user.phone_number & user.email have been updated in gateway-taces.out:

jq '.resourceSpans[].scopeSpans[].spans[].attributes[] | select(.key == "user.password" or .key == "user.phone_number" or .key == "user.email") | {key: .key, value: .value.stringValue}' ./gateway-traces.out

Notice that the user.account_password has been removed, and the user.phone_number & user.email have been updated:

{
  "key": "user.phone_number",
  "value": "UNKNOWN NUMBER"
}
{
  "key": "user.email",
  "value": "62d5e03d8fd5808e77aee5ebbd90cf7627a470ae0be9ffd10e8025a4ad0e1287"
}

Important

Stop the Agent and the Gateway processes by pressing Ctrl-C in their respective terminals.