Remove unused DataStax Astra support

[dkropachev]

Closes #1026. Part of #1025.

What and why

Remove DataStax Astra secure-connect-bundle parsing, topology/SNI routing, public configuration, examples, and tests. ScyllaDB does not use or test this path, so deleting it reduces unverified production and test code that the team must support.

Scylla client routes/private-endpoint support is preserved.

Validation

• mvn -pl core clean test — 3,955 unit tests and 76 Reactive Streams TCK checks passed.
• mvn -pl core -DskipTests verify
• mvn -pl examples -DskipTests package
• Full fast reactor compiled through integration and OSGi modules; its distribution assembly then hit the existing -Pfast/missing-sources incompatibility.

Dependencies: none. Cherry-picked commits: none.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: QUIET

Plan: Pro Plus

Run ID: 9e68619e-27ad-41e4-83fc-4c035bcd4e29

📥 Commits

Reviewing files that changed from the base of the PR and between dc58ee9 and a0fb0bd.

⛔ Files ignored due to path filters (1)

• core/src/test/resources/config/cloud/creds.zip is excluded by !**/*.zip

📒 Files selected for processing (26)

• changelog/README.md
• core/src/main/java/com/datastax/oss/driver/api/core/config/DefaultDriverOption.java
• core/src/main/java/com/datastax/oss/driver/api/core/config/TypedDriverOption.java
• core/src/main/java/com/datastax/oss/driver/api/core/session/ProgrammaticArguments.java
• core/src/main/java/com/datastax/oss/driver/api/core/session/SessionBuilder.java
• core/src/main/java/com/datastax/oss/driver/internal/core/config/cloud/CloudConfig.java
• core/src/main/java/com/datastax/oss/driver/internal/core/config/cloud/CloudConfigFactory.java
• core/src/main/java/com/datastax/oss/driver/internal/core/context/DefaultDriverConfigReporter.java
• core/src/main/java/com/datastax/oss/driver/internal/core/context/DefaultDriverContext.java
• core/src/main/java/com/datastax/oss/driver/internal/core/metadata/CloudTopologyMonitor.java
• core/src/main/java/com/datastax/oss/driver/internal/core/metadata/SniEndPoint.java
• core/src/main/java/com/datastax/oss/driver/internal/core/ssl/SniSslEngineFactory.java
• core/src/main/resources/reference.conf
• core/src/test/java/com/datastax/oss/driver/internal/core/config/cloud/CloudConfigFactoryTest.java
• core/src/test/java/com/datastax/oss/driver/internal/core/context/ClientRoutesConfigFromFileTest.java
• core/src/test/java/com/datastax/oss/driver/internal/core/context/DefaultDriverConfigReporterTest.java
• core/src/test/resources/config/cloud/identity.jks
• core/src/test/resources/config/cloud/metadata.json
• core/src/test/resources/config/cloud/trustStore.jks
• examples/src/main/java/com/datastax/oss/driver/examples/astra/AstraReadCassandraVersion.java
• examples/src/main/java/com/datastax/oss/driver/examples/mapper/KillrVideoMapperExample.java
• integration-tests/src/test/java/com/datastax/oss/driver/api/core/cloud/CloudIT.java
• integration-tests/src/test/java/com/datastax/oss/driver/api/core/cloud/SniProxyRule.java
• integration-tests/src/test/java/com/datastax/oss/driver/api/core/cloud/SniProxyServer.java
• manual/core/address_resolution/README.md
• upgrade_guide/README.md

💤 Files with no reviewable changes (20)

• core/src/test/resources/config/cloud/metadata.json
• integration-tests/src/test/java/com/datastax/oss/driver/api/core/cloud/SniProxyRule.java
• core/src/main/java/com/datastax/oss/driver/api/core/config/DefaultDriverOption.java
• examples/src/main/java/com/datastax/oss/driver/examples/astra/AstraReadCassandraVersion.java
• core/src/test/java/com/datastax/oss/driver/internal/core/context/DefaultDriverConfigReporterTest.java
• core/src/main/resources/reference.conf
• core/src/test/java/com/datastax/oss/driver/internal/core/context/ClientRoutesConfigFromFileTest.java
• core/src/main/java/com/datastax/oss/driver/internal/core/context/DefaultDriverConfigReporter.java
• core/src/test/java/com/datastax/oss/driver/internal/core/config/cloud/CloudConfigFactoryTest.java
• integration-tests/src/test/java/com/datastax/oss/driver/api/core/cloud/SniProxyServer.java
• integration-tests/src/test/java/com/datastax/oss/driver/api/core/cloud/CloudIT.java
• core/src/main/java/com/datastax/oss/driver/internal/core/config/cloud/CloudConfigFactory.java
• core/src/main/java/com/datastax/oss/driver/internal/core/ssl/SniSslEngineFactory.java
• core/src/main/java/com/datastax/oss/driver/internal/core/config/cloud/CloudConfig.java
• core/src/main/java/com/datastax/oss/driver/api/core/session/ProgrammaticArguments.java
• core/src/main/java/com/datastax/oss/driver/api/core/config/TypedDriverOption.java
• core/src/main/java/com/datastax/oss/driver/api/core/session/SessionBuilder.java
• core/src/main/java/com/datastax/oss/driver/internal/core/metadata/CloudTopologyMonitor.java
• core/src/main/java/com/datastax/oss/driver/internal/core/metadata/SniEndPoint.java
• core/src/main/java/com/datastax/oss/driver/internal/core/context/DefaultDriverContext.java

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

The PR removes DataStax Astra secure-connect-bundle support from public configuration APIs, session construction, cloud topology handling, and SNI SSL handling. It removes cloud proxy arguments and builder methods, the basic.cloud configuration block, and Astra-related runtime paths. Client-routes documentation no longer lists secure-connect bundles as a conflicting configuration. An Astra example is deleted, and example text now references ScyllaDB.

Suggested reviewers: nikagra

Merge Risk: 🔵 Low · up to a0fb0

This change removes unsupported Astra bundle connectivity and requires affected users to migrate to ordinary endpoint and TLS settings. Deployments that retain legacy bundle configuration may not fail immediately and could connect using unintended settings or fail to connect, so migration handling should receive explicit owner attention.

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (1 warning, 1 inconclusive)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files. (3 skipped: 3 …	Write docstrings for the functions missing them to satisfy the coverage threshold.
Linked Issues check	❓ Inconclusive	The reviewable changes satisfy the main requirements in [#1026], including removal of Astra parsing, APIs, runtime support, examples, tests, and documentation, while preserving client-routes support. …	Provide evidence that core/src/test/resources/config/cloud/creds.zip and all native-image/build entries are removed, and confirm that no withCloudSecureConnectBundle or Astra-specific runtime references remain outside the reviewed files…

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the primary change: removal of unused DataStax Astra support.
Description check	✅ Passed	The description directly explains the Astra support removal and the preservation of Scylla client-routes and private-endpoint support.
Out of Scope Changes check	✅ Passed	The changes are related to [#1026]. They remove Astra implementation, APIs, examples, tests, fixtures, and documentation without introducing unrelated functionality.

Full details: Linked Issues check

Explanation

The reviewable changes satisfy the main requirements in [#1026], including removal of Astra parsing, APIs, runtime support, examples, tests, and documentation, while preserving client-routes support. The Astra fixture core/src/test/resources/config/cloud/creds.zip is excluded by !**/*.zip, so complete fixture removal and repository-wide absence of Astra references cannot be verified.

Resolution

Provide evidence that core/src/test/resources/config/cloud/creds.zip and all native-image/build entries are removed, and confirm that no withCloudSecureConnectBundle or Astra-specific runtime references remain outside the reviewed files.

Full details: Docstring Coverage

Explanation

Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files. (3 skipped: 3 unsupported.)

• Fix all pre-merge checks with AI

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