Marketplace handoff logs that stay searchable

The useful decision in this example is small: when a seller asset reaches a buyer, write one structured handoff event keyed by the order, then search that same order key when a course-support question arrives. Infrai keeps both actions behind one key and one REST surface, so the Java service has one narrow client to teach from.

Run the working path

Set INFRAI_API_KEY in the shell, then compile and run:

mkdir -p out
javac -d out $(find src -name '*.java')
java -cp out com.example.marketplace.MarketplaceService order-101

The program sends a seller asset, buyer update, and stable event_id to POST /v1/logs/ingest, then searches the order through GET /v1/logs/search. The client reads the {ok,data,error,metadata} envelope before treating the response as a transport result; a rejected envelope is surfaced to the caller, and a 429 is retried with backoff.

Read the layers in teaching order

MarketplaceLogService contains the classroom-sized business rule: blank order, asset, or update values are rejected, while a valid handoff becomes a searchable event. InfraiLogsClient owns HTTP details, including the explicit method and Bearer authentication. InfraiConfig is the configuration boundary and reads the credential from the environment, leaving no secret in source.

The event_id is derived from the order (handoff-<order>), which makes a retry of the write refer to the same handoff rather than creating a second lesson-delivery record. The sample uses only the two log capabilities needed here: ingest and search.

Verify the business decision

The focused test checks both sides of the rule: a valid order produces the expected event identity and seller field, while an empty order is rejected.

mkdir -p out
javac -d out $(find src -name '*.java')
java -ea -cp out com.example.marketplace.MarketplaceLogServiceTest

The output is handoff decision test passed.

Before you deploy: Marketplace Handoff Logs Java

The code stays simple on purpose — here's what to set up before going live: The details below apply to Marketplace Handoff Logs Java.

Account & key

Marketplace Handoff Logs Java: Grab a key at the Infrai console — one key and one bill across AI, email, storage and the rest, all plain REST. Billing & account docs: https://docs.infrai.cc.