http://netty.io/netty-all/: Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients. (The Netty Project) 
final class io.netty.resolver.dns.TraceDnsQueryLifecycleObserver implements io.netty.resolver.dns.DnsQueryLifecycleObserver
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: io.netty.resolver.dns.TraceDnsQueryLifecycleObserver
  super_class: java.lang.Object
{
  private final io.netty.util.internal.logging.InternalLogger logger;
    descriptor: Lio/netty/util/internal/logging/InternalLogger;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final io.netty.util.internal.logging.InternalLogLevel level;
    descriptor: Lio/netty/util/internal/logging/InternalLogLevel;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final io.netty.handler.codec.dns.DnsQuestion question;
    descriptor: Lio/netty/handler/codec/dns/DnsQuestion;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private java.net.InetSocketAddress dnsServerAddress;
    descriptor: Ljava/net/InetSocketAddress;
    flags: (0x0002) ACC_PRIVATE

  void <init>(io.netty.handler.codec.dns.DnsQuestion, io.netty.util.internal.logging.InternalLogger, io.netty.util.internal.logging.InternalLogLevel);
    descriptor: (Lio/netty/handler/codec/dns/DnsQuestion;Lio/netty/util/internal/logging/InternalLogger;Lio/netty/util/internal/logging/InternalLogLevel;)V
    flags: (0x0000) 
    Code:
      stack=3, locals=4, args_size=4
        start local 0 // io.netty.resolver.dns.TraceDnsQueryLifecycleObserver this
        start local 1 // io.netty.handler.codec.dns.DnsQuestion question
        start local 2 // io.netty.util.internal.logging.InternalLogger logger
        start local 3 // io.netty.util.internal.logging.InternalLogLevel level
         0: .line 35
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 36
            aload 0 /* this */
            aload 1 /* question */
            ldc "question"
            invokestatic io.netty.util.internal.ObjectUtil.checkNotNull:(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;
            checkcast io.netty.handler.codec.dns.DnsQuestion
            putfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.question:Lio/netty/handler/codec/dns/DnsQuestion;
         2: .line 37
            aload 0 /* this */
            aload 2 /* logger */
            ldc "logger"
            invokestatic io.netty.util.internal.ObjectUtil.checkNotNull:(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;
            checkcast io.netty.util.internal.logging.InternalLogger
            putfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.logger:Lio/netty/util/internal/logging/InternalLogger;
         3: .line 38
            aload 0 /* this */
            aload 3 /* level */
            ldc "level"
            invokestatic io.netty.util.internal.ObjectUtil.checkNotNull:(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;
            checkcast io.netty.util.internal.logging.InternalLogLevel
            putfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.level:Lio/netty/util/internal/logging/InternalLogLevel;
         4: .line 39
            return
        end local 3 // io.netty.util.internal.logging.InternalLogLevel level
        end local 2 // io.netty.util.internal.logging.InternalLogger logger
        end local 1 // io.netty.handler.codec.dns.DnsQuestion question
        end local 0 // io.netty.resolver.dns.TraceDnsQueryLifecycleObserver this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    5     0      this  Lio/netty/resolver/dns/TraceDnsQueryLifecycleObserver;
            0    5     1  question  Lio/netty/handler/codec/dns/DnsQuestion;
            0    5     2    logger  Lio/netty/util/internal/logging/InternalLogger;
            0    5     3     level  Lio/netty/util/internal/logging/InternalLogLevel;
    MethodParameters:
          Name  Flags
      question  
      logger    
      level     

  public void queryWritten(java.net.InetSocketAddress, io.netty.channel.ChannelFuture);
    descriptor: (Ljava/net/InetSocketAddress;Lio/netty/channel/ChannelFuture;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // io.netty.resolver.dns.TraceDnsQueryLifecycleObserver this
        start local 1 // java.net.InetSocketAddress dnsServerAddress
        start local 2 // io.netty.channel.ChannelFuture future
         0: .line 43
            aload 0 /* this */
            aload 1 /* dnsServerAddress */
            putfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.dnsServerAddress:Ljava/net/InetSocketAddress;
         1: .line 44
            return
        end local 2 // io.netty.channel.ChannelFuture future
        end local 1 // java.net.InetSocketAddress dnsServerAddress
        end local 0 // io.netty.resolver.dns.TraceDnsQueryLifecycleObserver this
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    2     0              this  Lio/netty/resolver/dns/TraceDnsQueryLifecycleObserver;
            0    2     1  dnsServerAddress  Ljava/net/InetSocketAddress;
            0    2     2            future  Lio/netty/channel/ChannelFuture;
    MethodParameters:
                  Name  Flags
      dnsServerAddress  
      future            

  public void queryCancelled(int);
    descriptor: (I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=7, locals=2, args_size=2
        start local 0 // io.netty.resolver.dns.TraceDnsQueryLifecycleObserver this
        start local 1 // int queriesRemaining
         0: .line 48
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.dnsServerAddress:Ljava/net/InetSocketAddress;
            ifnull 5
         1: .line 49
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.logger:Lio/netty/util/internal/logging/InternalLogger;
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.level:Lio/netty/util/internal/logging/InternalLogLevel;
            ldc "from {} : {} cancelled with {} queries remaining"
            iconst_3
            anewarray java.lang.Object
            dup
            iconst_0
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.dnsServerAddress:Ljava/net/InetSocketAddress;
            aastore
            dup
            iconst_1
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.question:Lio/netty/handler/codec/dns/DnsQuestion;
            aastore
            dup
            iconst_2
         2: .line 50
            iload 1 /* queriesRemaining */
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            aastore
         3: .line 49
            invokeinterface io.netty.util.internal.logging.InternalLogger.log:(Lio/netty/util/internal/logging/InternalLogLevel;Ljava/lang/String;[Ljava/lang/Object;)V
         4: .line 51
            goto 8
         5: .line 52
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.logger:Lio/netty/util/internal/logging/InternalLogger;
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.level:Lio/netty/util/internal/logging/InternalLogLevel;
            ldc "{} query never written and cancelled with {} queries remaining"
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.question:Lio/netty/handler/codec/dns/DnsQuestion;
         6: .line 53
            iload 1 /* queriesRemaining */
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
         7: .line 52
            invokeinterface io.netty.util.internal.logging.InternalLogger.log:(Lio/netty/util/internal/logging/InternalLogLevel;Ljava/lang/String;Ljava/lang/Object;Ljava/lang/Object;)V
         8: .line 55
      StackMap locals:
      StackMap stack:
            return
        end local 1 // int queriesRemaining
        end local 0 // io.netty.resolver.dns.TraceDnsQueryLifecycleObserver this
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    9     0              this  Lio/netty/resolver/dns/TraceDnsQueryLifecycleObserver;
            0    9     1  queriesRemaining  I
    MethodParameters:
                  Name  Flags
      queriesRemaining  

  public io.netty.resolver.dns.DnsQueryLifecycleObserver queryRedirected(java.util.List<java.net.InetSocketAddress>);
    descriptor: (Ljava/util/List;)Lio/netty/resolver/dns/DnsQueryLifecycleObserver;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=2, args_size=2
        start local 0 // io.netty.resolver.dns.TraceDnsQueryLifecycleObserver this
        start local 1 // java.util.List nameServers
         0: .line 59
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.logger:Lio/netty/util/internal/logging/InternalLogger;
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.level:Lio/netty/util/internal/logging/InternalLogLevel;
            ldc "from {} : {} redirected"
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.dnsServerAddress:Ljava/net/InetSocketAddress;
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.question:Lio/netty/handler/codec/dns/DnsQuestion;
            invokeinterface io.netty.util.internal.logging.InternalLogger.log:(Lio/netty/util/internal/logging/InternalLogLevel;Ljava/lang/String;Ljava/lang/Object;Ljava/lang/Object;)V
         1: .line 60
            aload 0 /* this */
            areturn
        end local 1 // java.util.List nameServers
        end local 0 // io.netty.resolver.dns.TraceDnsQueryLifecycleObserver this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    2     0         this  Lio/netty/resolver/dns/TraceDnsQueryLifecycleObserver;
            0    2     1  nameServers  Ljava/util/List<Ljava/net/InetSocketAddress;>;
    Signature: (Ljava/util/List<Ljava/net/InetSocketAddress;>;)Lio/netty/resolver/dns/DnsQueryLifecycleObserver;
    MethodParameters:
             Name  Flags
      nameServers  

  public io.netty.resolver.dns.DnsQueryLifecycleObserver queryCNAMEd(io.netty.handler.codec.dns.DnsQuestion);
    descriptor: (Lio/netty/handler/codec/dns/DnsQuestion;)Lio/netty/resolver/dns/DnsQueryLifecycleObserver;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=7, locals=2, args_size=2
        start local 0 // io.netty.resolver.dns.TraceDnsQueryLifecycleObserver this
        start local 1 // io.netty.handler.codec.dns.DnsQuestion cnameQuestion
         0: .line 65
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.logger:Lio/netty/util/internal/logging/InternalLogger;
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.level:Lio/netty/util/internal/logging/InternalLogLevel;
            ldc "from {} : {} CNAME question {}"
            iconst_3
            anewarray java.lang.Object
            dup
            iconst_0
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.dnsServerAddress:Ljava/net/InetSocketAddress;
            aastore
            dup
            iconst_1
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.question:Lio/netty/handler/codec/dns/DnsQuestion;
            aastore
            dup
            iconst_2
            aload 1 /* cnameQuestion */
            aastore
            invokeinterface io.netty.util.internal.logging.InternalLogger.log:(Lio/netty/util/internal/logging/InternalLogLevel;Ljava/lang/String;[Ljava/lang/Object;)V
         1: .line 66
            aload 0 /* this */
            areturn
        end local 1 // io.netty.handler.codec.dns.DnsQuestion cnameQuestion
        end local 0 // io.netty.resolver.dns.TraceDnsQueryLifecycleObserver this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    2     0           this  Lio/netty/resolver/dns/TraceDnsQueryLifecycleObserver;
            0    2     1  cnameQuestion  Lio/netty/handler/codec/dns/DnsQuestion;
    MethodParameters:
               Name  Flags
      cnameQuestion  

  public io.netty.resolver.dns.DnsQueryLifecycleObserver queryNoAnswer(io.netty.handler.codec.dns.DnsResponseCode);
    descriptor: (Lio/netty/handler/codec/dns/DnsResponseCode;)Lio/netty/resolver/dns/DnsQueryLifecycleObserver;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=7, locals=2, args_size=2
        start local 0 // io.netty.resolver.dns.TraceDnsQueryLifecycleObserver this
        start local 1 // io.netty.handler.codec.dns.DnsResponseCode code
         0: .line 71
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.logger:Lio/netty/util/internal/logging/InternalLogger;
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.level:Lio/netty/util/internal/logging/InternalLogLevel;
            ldc "from {} : {} no answer {}"
            iconst_3
            anewarray java.lang.Object
            dup
            iconst_0
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.dnsServerAddress:Ljava/net/InetSocketAddress;
            aastore
            dup
            iconst_1
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.question:Lio/netty/handler/codec/dns/DnsQuestion;
            aastore
            dup
            iconst_2
            aload 1 /* code */
            aastore
            invokeinterface io.netty.util.internal.logging.InternalLogger.log:(Lio/netty/util/internal/logging/InternalLogLevel;Ljava/lang/String;[Ljava/lang/Object;)V
         1: .line 72
            aload 0 /* this */
            areturn
        end local 1 // io.netty.handler.codec.dns.DnsResponseCode code
        end local 0 // io.netty.resolver.dns.TraceDnsQueryLifecycleObserver this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/netty/resolver/dns/TraceDnsQueryLifecycleObserver;
            0    2     1  code  Lio/netty/handler/codec/dns/DnsResponseCode;
    MethodParameters:
      Name  Flags
      code  

  public void queryFailed(java.lang.Throwable);
    descriptor: (Ljava/lang/Throwable;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=7, locals=2, args_size=2
        start local 0 // io.netty.resolver.dns.TraceDnsQueryLifecycleObserver this
        start local 1 // java.lang.Throwable cause
         0: .line 77
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.dnsServerAddress:Ljava/net/InetSocketAddress;
            ifnull 3
         1: .line 78
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.logger:Lio/netty/util/internal/logging/InternalLogger;
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.level:Lio/netty/util/internal/logging/InternalLogLevel;
            ldc "from {} : {} failure"
            iconst_3
            anewarray java.lang.Object
            dup
            iconst_0
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.dnsServerAddress:Ljava/net/InetSocketAddress;
            aastore
            dup
            iconst_1
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.question:Lio/netty/handler/codec/dns/DnsQuestion;
            aastore
            dup
            iconst_2
            aload 1 /* cause */
            aastore
            invokeinterface io.netty.util.internal.logging.InternalLogger.log:(Lio/netty/util/internal/logging/InternalLogLevel;Ljava/lang/String;[Ljava/lang/Object;)V
         2: .line 79
            goto 4
         3: .line 80
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.logger:Lio/netty/util/internal/logging/InternalLogger;
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.level:Lio/netty/util/internal/logging/InternalLogLevel;
            ldc "{} query never written and failed"
            aload 0 /* this */
            getfield io.netty.resolver.dns.TraceDnsQueryLifecycleObserver.question:Lio/netty/handler/codec/dns/DnsQuestion;
            aload 1 /* cause */
            invokeinterface io.netty.util.internal.logging.InternalLogger.log:(Lio/netty/util/internal/logging/InternalLogLevel;Ljava/lang/String;Ljava/lang/Object;Ljava/lang/Object;)V
         4: .line 82
      StackMap locals:
      StackMap stack:
            return
        end local 1 // java.lang.Throwable cause
        end local 0 // io.netty.resolver.dns.TraceDnsQueryLifecycleObserver this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    5     0   this  Lio/netty/resolver/dns/TraceDnsQueryLifecycleObserver;
            0    5     1  cause  Ljava/lang/Throwable;
    MethodParameters:
       Name  Flags
      cause  

  public void querySucceed();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=0, locals=1, args_size=1
        start local 0 // io.netty.resolver.dns.TraceDnsQueryLifecycleObserver this
         0: .line 86
            return
        end local 0 // io.netty.resolver.dns.TraceDnsQueryLifecycleObserver this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/resolver/dns/TraceDnsQueryLifecycleObserver;
}
SourceFile: "TraceDnsQueryLifecycleObserver.java"