http://metrics.dropwizard.io/metrics-healthchecks: An addition to Metrics which provides the ability to run application-specific health checks, allowing you to check your application's heath in production.
  • Coda Hale
  • Ryan Tenney
  • Artem Prigoda 
class com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory implements java.util.concurrent.ThreadFactory
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory
  super_class: java.lang.Object
{
  private final java.lang.ThreadGroup group;
    descriptor: Ljava/lang/ThreadGroup;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final java.util.concurrent.atomic.AtomicInteger threadNumber;
    descriptor: Ljava/util/concurrent/atomic/AtomicInteger;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final java.lang.String namePrefix;
    descriptor: Ljava/lang/String;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  void <init>(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0000) 
    Code:
      stack=4, locals=3, args_size=2
        start local 0 // com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory this
        start local 1 // java.lang.String namePrefix
         0: .line 273
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 270
            aload 0 /* this */
            new java.util.concurrent.atomic.AtomicInteger
            dup
            iconst_1
            invokespecial java.util.concurrent.atomic.AtomicInteger.<init>:(I)V
            putfield com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory.threadNumber:Ljava/util/concurrent/atomic/AtomicInteger;
         2: .line 274
            invokestatic java.lang.System.getSecurityManager:()Ljava/lang/SecurityManager;
            astore 2 /* s */
        start local 2 // java.lang.SecurityManager s
         3: .line 275
            aload 0 /* this */
            aload 2 /* s */
            ifnull 4
            aload 2 /* s */
            invokevirtual java.lang.SecurityManager.getThreadGroup:()Ljava/lang/ThreadGroup;
            goto 5
      StackMap locals: com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory java.lang.String java.lang.SecurityManager
      StackMap stack: com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory
         4: invokestatic java.lang.Thread.currentThread:()Ljava/lang/Thread;
            invokevirtual java.lang.Thread.getThreadGroup:()Ljava/lang/ThreadGroup;
      StackMap locals: com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory java.lang.String java.lang.SecurityManager
      StackMap stack: com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory java.lang.ThreadGroup
         5: putfield com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory.group:Ljava/lang/ThreadGroup;
         6: .line 276
            aload 0 /* this */
            aload 1 /* namePrefix */
            putfield com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory.namePrefix:Ljava/lang/String;
         7: .line 277
            return
        end local 2 // java.lang.SecurityManager s
        end local 1 // java.lang.String namePrefix
        end local 0 // com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    8     0        this  Lcom/codahale/metrics/health/HealthCheckRegistry$NamedThreadFactory;
            0    8     1  namePrefix  Ljava/lang/String;
            3    8     2           s  Ljava/lang/SecurityManager;
    MethodParameters:
            Name  Flags
      namePrefix  

  public java.lang.Thread newThread(java.lang.Runnable);
    descriptor: (Ljava/lang/Runnable;)Ljava/lang/Thread;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=7, locals=3, args_size=2
        start local 0 // com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory this
        start local 1 // java.lang.Runnable r
         0: .line 281
            new java.lang.Thread
            dup
            aload 0 /* this */
            getfield com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory.group:Ljava/lang/ThreadGroup;
            aload 1 /* r */
            new java.lang.StringBuilder
            dup
            aload 0 /* this */
            getfield com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory.namePrefix:Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            getfield com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory.threadNumber:Ljava/util/concurrent/atomic/AtomicInteger;
            invokevirtual java.util.concurrent.atomic.AtomicInteger.getAndIncrement:()I
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            lconst_0
            invokespecial java.lang.Thread.<init>:(Ljava/lang/ThreadGroup;Ljava/lang/Runnable;Ljava/lang/String;J)V
            astore 2 /* t */
        start local 2 // java.lang.Thread t
         1: .line 282
            aload 2 /* t */
            iconst_1
            invokevirtual java.lang.Thread.setDaemon:(Z)V
         2: .line 283
            aload 2 /* t */
            invokevirtual java.lang.Thread.getPriority:()I
            iconst_5
            if_icmpeq 4
         3: .line 284
            aload 2 /* t */
            iconst_5
            invokevirtual java.lang.Thread.setPriority:(I)V
         4: .line 285
      StackMap locals: java.lang.Thread
      StackMap stack:
            aload 2 /* t */
            areturn
        end local 2 // java.lang.Thread t
        end local 1 // java.lang.Runnable r
        end local 0 // com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0  this  Lcom/codahale/metrics/health/HealthCheckRegistry$NamedThreadFactory;
            0    5     1     r  Ljava/lang/Runnable;
            1    5     2     t  Ljava/lang/Thread;
    MethodParameters:
      Name  Flags
      r     
}
SourceFile: "HealthCheckRegistry.java"
NestHost: com.codahale.metrics.health.HealthCheckRegistry
InnerClasses:
  private NamedThreadFactory = com.codahale.metrics.health.HealthCheckRegistry$NamedThreadFactory of com.codahale.metrics.health.HealthCheckRegistry