How does Atlas handle GraalVM native-image reflection issues during API migration?

Atlas can add missing 'reflect-config.json' entries under 'META-INF/native-image' or run the tracing agent to generate necessary metadata, ensuring your GraalVM native-image builds succeed after API changes.

Can Atlas ensure all calls to a deprecated GraalVM API are found?

Yes, Atlas combines 'lsp''s 'findReferences' for static calls with 'grep' for dynamic or string-based usages, providing a comprehensive enumeration of all deprecated API calls in your GraalVM project.

How does Atlas prevent breaking my GraalVM tests during a large migration?

Atlas runs 'mvn -Pnative test' after each individual file modification, ensuring that any breakage is immediately identified and addressed before proceeding, maintaining the stability of your GraalVM codebase.

What if a file changes while Atlas is working on a GraalVM migration?

Atlas's 'apply_patch' tool requires an exact match of the hunk's context and old lines. If a file drifts, it will throw 'Failed to find expected lines' rather than misapplying, protecting your GraalVM code.

Does Atlas integrate with GraalVM's 'Spotless' formatter?

Yes, Atlas can run 'Spotless' via its 'bash' tool, ensuring that all code changes made during the API migration adhere to your GraalVM project's formatting standards.

How does Atlas manage the commit process for GraalVM API migrations?

Atlas reads git branches, status, and diffs, and can stage and create commits on your behalf after presenting a unified diff for approval, streamlining the version control for your GraalVM project.

Can Atlas help with Maven dependencies during a GraalVM API migration?

While the primary focus is code migration, Atlas operates within your Maven project context, understanding 'pom.xml' configurations, and can execute Maven commands via 'bash' for tasks like dependency updates if needed.

Migrate a Deprecated API Across Every Callsite in GraalVM with Atlas in 2026

To migrate a deprecated API across every callsite in a GraalVM project, Atlas leverages its 'lsp' tool to enumerate all references, then systematically applies 'apply_patch' for each migration, ensuring validation with 'mvn -Pnative test' and formatting with 'Spotless' before committing changes via 'Maven'. This comprehensive approach guarantees no caller is missed and the native-image build remains stable.

How does Atlas find all deprecated API calls in GraalVM?

Atlas identifies every deprecated API callsite in a GraalVM project by combining its 'lsp' tool's 'findReferences' with 'grep' for dynamic usages. This dual approach ensures 100% coverage, even for reflection-based calls that might only manifest in native-image builds, a critical consideration for GraalVM's ahead-of-time compilation.

In a GraalVM codebase, identifying all usages of a deprecated API can be complex, especially with dynamic features like reflection. Atlas addresses this by first using its 'lsp' tool to query the language server for a complete set of static references to the deprecated symbol. This is highly accurate for direct method calls and field accesses. However, GraalVM native-image builds often involve explicit declarations for reflection, resources, and dynamic proxies in files like 'reflect-config.json' under 'META-INF/native-image'. To catch string-based or dynamically constructed calls that the language server might miss, Atlas cross-checks the initial 'lsp' results with a 'grep' search across the entire codebase. This ensures that every potential callsite, whether explicit or dynamic, is identified and added to the migration scope. The process begins by running Atlas in your JVM project, ensuring your 'pom.xml' correctly applies the 'native-maven-plugin' for proper project context.

How does Atlas apply changes to GraalVM code safely?

Atlas applies changes to GraalVM code safely using 'apply_patch', which requires an exact context match to prevent misapplication. For each of the dozens or hundreds of callsites, Atlas creates a 'todowrite' entry, making partial progress visible and ensuring no call is silently skipped, a vital step in large-scale 2026 migrations.

Migrating a deprecated API across an entire GraalVM codebase is a task that punishes half-measures. Atlas ensures systematic progress and safety by first converting the enumerated callsites into individual 'todowrite' entries. This provides a clear, trackable list of work items, making partial progress visible and preventing any callsite from being silently overlooked. For each migration, Atlas employs its 'apply_patch' tool. This tool is designed for robustness: it seeks the exact hunk's context and old lines within the target file. If the file has drifted or the expected lines are not found, 'apply_patch' will throw a 'Failed to find expected lines' error rather than attempting a speculative or incorrect modification. This 'fail-fast' mechanism is crucial for maintaining code integrity in complex GraalVM projects, where even minor misapplications can lead to hard-to-debug native-image build failures or runtime errors. Atlas's read-only plan agent drafts the migration strategy, and only after approval does it switch to a build agent to execute these precise, context-anchored patches.

How does Atlas validate GraalVM native-image builds after migration?

After migrating a callsite in a GraalVM project, Atlas immediately validates the change by running 'mvn -Pnative test' via its 'bash' tool. This ensures that native-image specific issues, like missing 'reflect-config.json' entries, are caught early, often within 1-2 minutes of the change, preventing cascading failures.

Validation is paramount in GraalVM projects, especially when dealing with native-image builds where reflection, resources, and dynamic proxies must be declared ahead of time. Atlas integrates directly with your GraalVM toolchain to provide immediate feedback. After each individual file modification by 'apply_patch', Atlas uses its 'bash' tool to execute 'mvn -Pnative test'. This command runs the affected tests, compiling and testing the native image. If the tests pass, the corresponding 'todowrite' entry is marked complete. If a test fails, Atlas immediately surfaces the error, allowing the developer to address it. This iterative testing approach is critical for GraalVM, as issues like a missing 'reflect-config.json' entry for a class that only fails in the native binary (not on the JVM) are caught at the earliest possible stage. Atlas can even assist by adding missing 'reflect-config.json' entries or running the tracing agent to generate and diff necessary metadata, committing only the entries your code actually needs, ensuring your 'META-INF/native-image' configuration remains precise.

What is the review and commit process for GraalVM API migrations?

The review and commit process for GraalVM API migrations with Atlas is highly transparent, featuring unified diffs for every file edit. Atlas asks for approval before writing any changes, and can stage and create commits, ensuring a clear audit trail for all 2026 project changes and maintaining code quality with 'Spotless' formatting.

Atlas provides a robust and transparent review and commit workflow for GraalVM API migrations. Before any changes are written to disk, Atlas computes a unified diff for every file edit and surfaces it for explicit approval. This permission-gated approach, based on allow, ask, and deny rules, ensures that you, the developer, maintain full control over your codebase. Once approved, Atlas can stage the changes and create commits on your behalf, integrating direct with your existing Git workflow. This includes reading Git branches, status, and diffs, and even creating new commits. Furthermore, Atlas can apply your project's formatting standards by running 'Spotless' via its 'bash' tool on the modified files, ensuring code consistency. Atlas also snapshots file changes as Git patches, allowing edits to be easily diffed and rolled back if necessary. This comprehensive review and commit process, combined with the ability to switch active models and providers on the fly, makes Atlas a powerful and flexible tool for managing complex GraalVM codebase migrations.

Step by step

011: Initialize Atlas in your GraalVM project, ensuring your 'pom.xml' correctly applies the 'native-maven-plugin' for proper project context.
022: Use Atlas's 'lsp' tool with 'findReferences' on the deprecated symbol to enumerate all static callsites, then cross-check with 'grep' for dynamic or string-based usages in your GraalVM codebase.
033: Create a 'todowrite' entry for each identified callsite, making the full scope of the migration visible and trackable within Atlas.
044: For each 'todowrite' entry, use Atlas's 'apply_patch' tool to migrate the callsite, ensuring it seeks the hunk's context and old lines to prevent misapplication.
055: After each file modification, run 'mvn -Pnative test' via Atlas's 'bash' tool to validate the change, especially for native-image compatibility, and mark the 'todowrite' entry complete only upon test success.
066: If native-image builds fail due to reflection, ask Atlas to add the missing 'reflect-config.json' entry under 'META-INF/native-image', or run the tracing agent to generate necessary metadata.
077: Apply 'Spotless' formatting to the modified files via Atlas's 'bash' tool to maintain code style consistency across your GraalVM project.
088: Before committing, review the unified diff presented by Atlas, then allow Atlas to stage and create a commit for the completed migration.
099: Finally, 'grep' for the deprecated symbol one last time to confirm zero remaining hits, then use Atlas to delete the old implementation from your GraalVM codebase.

Frequently asked questions

How does Atlas handle GraalVM native-image reflection issues during API migration?: Atlas can add missing 'reflect-config.json' entries under 'META-INF/native-image' or run the tracing agent to generate necessary metadata, ensuring your GraalVM native-image builds succeed after API changes.
Can Atlas ensure all calls to a deprecated GraalVM API are found?: Yes, Atlas combines 'lsp''s 'findReferences' for static calls with 'grep' for dynamic or string-based usages, providing a comprehensive enumeration of all deprecated API calls in your GraalVM project.
How does Atlas prevent breaking my GraalVM tests during a large migration?: Atlas runs 'mvn -Pnative test' after each individual file modification, ensuring that any breakage is immediately identified and addressed before proceeding, maintaining the stability of your GraalVM codebase.
What if a file changes while Atlas is working on a GraalVM migration?: Atlas's 'apply_patch' tool requires an exact match of the hunk's context and old lines. If a file drifts, it will throw 'Failed to find expected lines' rather than misapplying, protecting your GraalVM code.
Does Atlas integrate with GraalVM's 'Spotless' formatter?: Yes, Atlas can run 'Spotless' via its 'bash' tool, ensuring that all code changes made during the API migration adhere to your GraalVM project's formatting standards.
How does Atlas manage the commit process for GraalVM API migrations?: Atlas reads git branches, status, and diffs, and can stage and create commits on your behalf after presenting a unified diff for approval, streamlining the version control for your GraalVM project.
Can Atlas help with Maven dependencies during a GraalVM API migration?: While the primary focus is code migration, Atlas operates within your Maven project context, understanding 'pom.xml' configurations, and can execute Maven commands via 'bash' for tasks like dependency updates if needed.

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