Internal - Remove Host Name from Settings URL

[cleverchuk]

Summary

The agent's getSettings HTTP call previously appended the hostname as a path segment (/v1/settings/{service}/{hostname}). This change removes the hostname from that URL, making the endpoint /v1/settings/{service}.

What changed

Settings URL path simplified

The HttpSettingsReader no longer looks up the host name from ResourceArbiter to embed it in the settings URL. The HOST_NAME attribute was being read from the resolved OTel resource and appended as a trailing path segment, tying settings fetches to host identity at the URL level. Removing it decouples settings retrieval from host identity.

HostIdResourceUtil no longer emits HOST_NAME

The same attribute was being injected into the resource identity map built by HostIdResourceUtil. That line is removed, so the host name is no longer part of the identity attributes contributed by this utility.

Rationale

The collector's /v1/settings endpoint does not require the hostname in the path as of current specification.

Test services data

1. e-1712644058766987264
2. e-1712643928659124224
3. e-1742334541200846848
4. e-1777406072376840192

[Copilot]

Pull request overview

This PR updates the agent’s settings-fetch behavior to remove the host name from the /v1/settings URL path, aligning the client with the collector endpoint contract (/v1/settings/{service}) and decoupling settings retrieval from host identity.

Changes:

• Simplified HttpSettingsReader settings URL construction to omit the hostname segment.
• Removed HOST_NAME emission from HostIdResourceUtil identity attributes.
• Updated HttpSettingsReaderTest expectations and removed now-unneeded resource/hostname mocking.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
custom/src/main/java/com/solarwinds/opentelemetry/extensions/config/HttpSettingsReader.java	Removes hostname from the settings URL path and updates related debug logging.
custom/src/main/java/com/solarwinds/opentelemetry/extensions/config/HostIdResourceUtil.java	Stops adding host.name to the generated resource attributes.
custom/src/test/java/com/solarwinds/opentelemetry/extensions/config/HttpSettingsReaderTest.java	Updates URL assertions to match the new endpoint shape and simplifies test setup accordingly.

[jerrytfleung]

LGTM.