arthas-watch
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Arthas Watch Command: Observe Parameters And Return Value When First Is Five
An engineer would use the arthas-watch command to monitor a specific method in a class for its parameters and return value only when the first parameter equals five, particularly during a debugging session to analyze method behavior in a production environment. Exact CLI syntax to observe parameters and return value when first is five using Arthas Watch.
When to use this: An engineer would use the arthas-watch command to monitor a specific method in a class for its parameters and return value only when the first parameter equals five, particularly during a debugging session to analyze method behavior in a production environment.
Command Syntax
watch <class-pattern> <method-pattern> '{< params[1],returnObj >}' '<"5".equals(params[0])>' -x 4watch <class-pattern> <method-pattern> "`{< params[1],returnObj >`}" '<"5".equals(params[0])>' -x 4Command Breakdown
-x- Command Option
- Tool-specific option used by this command invocation.
FAQ
Purpose: Exact syntax to observe parameters and return value when first is five using Arthas Watch.
Test path: Replace placeholders and run destructive commands in a disposable workspace first.
Flag behavior: Tool version, platform, and shell can change behavior.
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Related Operations
Arthas Watch Command: Observe First Parameter And Return Value
watch <class-pattern> <method-pattern> '{< params[0],returnObj >}' -x 4 Arthas Watch Command: Observe Count Property On Return Or Exception watch <class-pattern> <method-pattern> '{< params[1].count >}' -e -s Arthas Watch Command: Observe First Parameter Return Value watch <class-pattern> <method-pattern> '{< params[0],returnObj >}' -x 4 Arthas Watch Command: Conditional Parameter Observation watch <class-pattern> <method-pattern> '{< params[1],returnObj >}' '<"5".equals(params[0])>' -x 4 Arthas Watch Command: Observe Second Parameter Count watch <class-pattern> <method-pattern> '{< params[1].count >}' -e -s