# Diagnose a Hanging or Long-Running Groovy Command with Atlas in 2026 > Groovy developers in 2026 use Atlas to diagnose hanging `gradle` commands or `Spock` tests, determining if they are genuinely slow or blocked on interactive input. In 2026, Groovy developers can swiftly diagnose hanging or long-running commands, whether they are `gradle test` for Spock specifications, `gradle build` for project compilation, or complex Jenkins pipeline scripts, by leveraging Atlas's integrated `bash` tool. Atlas races every command against a configurable timeout, and upon expiration, it provides a precise diagnosis: either the command is genuinely slow and requires a larger timeout, or it is silently blocked, awaiting interactive input. This explicit distinction helps Groovy developers quickly identify and resolve issues, preventing wasted time on unresponsive processes. ## Key takeaways - Atlas's `bash` tool explicitly diagnoses if a Groovy command is slow or blocked on input. - Identify hanging `gradle build` or `Spock (gradle test)` commands by checking Atlas's `shell_metadata`. - Unblock Groovy scripts by re-running with `--no-input` or CI flags based on Atlas's diagnosis. - Adjust timeouts for genuinely slow Groovy operations like large `Gradle` builds using `atlas bash --timeout`. - Atlas ensures safety with permission-gated tool calls and unified diffs for Groovy code changes. - Atlas indexes Groovy code using AST declarations and local Ollama embeddings, keeping your `Jenkinsfile` and `build.gradle` secure. ## How Atlas Diagnoses Hanging Groovy Commands Atlas, in 2026, employs its robust `bash` tool to execute Groovy-related commands like `gradle build` or `gradle test` and monitor their execution against a specified timeout. This process is crucial for identifying whether a command is genuinely slow or silently blocked, a common issue in complex Groovy environments. When you run a Groovy command through Atlas, such as `./gradlew test` to execute your Spock specifications or `gradle build` for a full project compilation, Atlas's `bash` tool initiates the process with a default timeout. If the command exceeds this duration, Atlas does not merely kill it; instead, it provides a detailed `shell_metadata` block in its output. This metadata explicitly states whether the command was terminated due to a timeout, indicating a potentially slow operation, or if it was waiting for interactive input. This clear distinction is invaluable for Groovy developers, as it immediately points to the root cause, saving significant debugging time. For instance, a `Jenkinsfile` script might hang if it encounters an unexpected prompt, and Atlas will highlight this specific scenario. ## Identifying Blocked Groovy Scripts and Builds A common pitfall for Groovy developers in 2026 is a `gradle` build or a `Jenkinsfile` script silently blocking on input, appearing to hang indefinitely. Atlas's diagnostic capabilities specifically address this by explicitly calling out interactive-input cases, preventing hours of fruitless waiting. Atlas's `bash` tool is designed to differentiate between a truly long-running Groovy process and one that is stalled, waiting for user interaction. When a command like `gradle build` or a custom Groovy script within a `Jenkinsfile` attempts to prompt for input (e.g., a password, a confirmation, or a missing configuration detail) in a non-interactive environment, it will appear to hang. Atlas's `shell_metadata` output will clearly state that the command was 'waiting for interactive input.' This immediate feedback is critical for Groovy developers, as it allows them to re-run the command with appropriate non-interactive flags, such as `--no-input` for Gradle, or to ensure that CI-mode settings are correctly applied, unblocking the execution without manual intervention. ## Adjusting Timeouts for Genuinely Slow Groovy Operations For Groovy projects with extensive `Spock (gradle test)` suites or large `Gradle` builds, commands can genuinely take a long time to complete. Atlas provides a straightforward mechanism to adjust timeouts, ensuring that legitimate long-running operations are not prematurely terminated in 2026. If Atlas's `shell_metadata` indicates that a Groovy command, such as `./gradlew test` or `gradle assemble`, was terminated due to a timeout but was not waiting for interactive input, it suggests the operation is genuinely slow. This is common in large Groovy codebases with many `@Grab` dependencies or complex Gradle build logic. Atlas's output will instruct you to retry the command with a larger timeout value, specified in milliseconds. For example, you might re-run `atlas bash "./gradlew build" --timeout 120000` to allow for a two-minute build process. This flexibility ensures that Atlas supports the diverse performance characteristics of Groovy applications, from quick `Spotless` formatting tasks to extensive integration tests. ## Atlas's Safety and Review for Groovy Codebase Changes Atlas prioritizes safety and transparency when interacting with your Groovy codebase, from `build.gradle` to `Spock` specifications. Every action, including running commands or proposing code changes, is permission-gated and subject to developer review in 2026. Before Atlas executes any command, such as `./gradlew test`, it operates within a read-only plan agent, drafting its strategy and asking for your explicit permission. This ensures that no unintended actions are taken on your Groovy project. When Atlas proposes changes to files like `build.gradle`, `Jenkinsfile`, or `src/main/groovy/com/example/MyClass.groovy`, it computes a unified diff for every file edit. This diff is surfaced for your approval, allowing you to review every line change before it is written to disk. Atlas also snapshots file changes as git patches, enabling easy diffing and rollback of edits. This robust review process, combined with local Ollama embeddings for code indexing, keeps your Groovy code secure and off third-party servers, providing peace of mind for developers working with sensitive Groovy DSL closures or shared pipeline libraries. ## Steps 1. Run your potentially hanging Groovy command, such as `gradle build` or `./gradlew test`, through Atlas's `bash` tool with a default timeout: `atlas bash "gradle build"`. 2. Examine the `shell_metadata` block in Atlas's output when the command is killed. Atlas will explicitly state if the command was 'waiting for interactive input' or 'timed out'. 3. If Atlas reports 'waiting for interactive input' for your Groovy command (e.g., a `Jenkinsfile` script), re-run it with non-interactive flags: `atlas bash "gradle build --no-input"` or ensure CI mode is active. 4. If Atlas reports 'timed out' for your Groovy command (e.g., a long-running `Spock (gradle test)` suite), retry with a larger timeout value in milliseconds: `atlas bash "./gradlew test" --timeout 90000` (for 90 seconds). 5. If you manually aborted the Groovy command, Atlas's metadata will confirm 'User aborted the command', distinguishing it from a timeout or blocked state. 6. For Groovy code changes proposed by Atlas, such as converting a nested closure or adding a Spock specification, review the unified diff and approve before Atlas commits the changes to your `build.gradle` or `src/test/groovy` files. ## FAQ ### How do I debug a hanging `gradle build` in a Groovy project with Atlas? Run `atlas bash "gradle build"`. Atlas will execute the command and, if it hangs, provide `shell_metadata` indicating if it's genuinely slow or blocked on interactive input. If blocked, re-run with `gradle build --no-input`. If slow, increase the timeout with `atlas bash "gradle build" --timeout 120000`. ### Why is my `Spock (gradle test)` suite stuck, and how can Atlas help? Your `Spock (gradle test)` suite might be stuck due to a long-running test or a prompt for input. Use `atlas bash "./gradlew test"`. Atlas will diagnose if it's waiting for input or if the timeout was exceeded. For long tests, increase the timeout; for input, ensure your test environment is non-interactive. ### Can Atlas diagnose issues in a hanging Groovy `Jenkinsfile` script? Yes, Atlas can diagnose hanging `Jenkinsfile` scripts. If your Jenkins pipeline executes a Groovy command that stalls, run that command via `atlas bash`. Atlas will report if the script is waiting for interactive input, which is a common cause for `Jenkinsfile` hangs in CI environments, allowing you to adjust the script or environment. ### What are the safety features when Atlas interacts with my Groovy codebase? Atlas prioritizes safety. It uses a read-only plan agent to draft actions and asks for permission before executing tools like `bash`. For any proposed Groovy code changes, such as to `build.gradle` or `src/main/groovy` files, Atlas generates a unified diff for your explicit approval, and it snapshots changes as git patches for easy rollback. ### How does Atlas distinguish between a slow Groovy command and one blocked on input? Atlas's `bash` tool races the Groovy command against a timeout. When the command is terminated, the `shell_metadata` block in Atlas's output explicitly states the reason. It will either say 'timed out' for genuinely slow commands or 'waiting for interactive input' for commands that are silently blocked, providing a clear diagnosis. ### Does Atlas support Groovy-specific tools like `Spotless` for formatting? Yes, Atlas is designed to work direct with the Groovy toolchain. It can be instructed to apply `Spotless` with the Groovy formatter to touched files, ensuring code consistency. Atlas understands Groovy DSL closures and Gradle dependencies, making it a powerful assistant for Groovy development tasks beyond just debugging. --- Canonical HTML: https://runatlas.sh/resources/stacks/diagnose-a-hanging-or-long-running-command-in-groovy Source of truth: aeo_pages row `/resources/stacks/diagnose-a-hanging-or-long-running-command-in-groovy` (segment: Stacks) (this file is generated from it, never hand-edited). Licence: Atlas is proprietary with a free core. It is not open source and there is no public source repository.