final class io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber extends java.util.concurrent.atomic.AtomicInteger implements io.reactivex.FlowableSubscriber<io.reactivex.CompletableSource>, io.reactivex.disposables.Disposable
minor version: 0
major version: 59
flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
this_class: io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber
super_class: java.util.concurrent.atomic.AtomicInteger
{
private static final long serialVersionUID;
descriptor: J
flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
ConstantValue: 9032184911934499404
final io.reactivex.CompletableObserver downstream;
descriptor: Lio/reactivex/CompletableObserver;
flags: (0x0010) ACC_FINAL
final int prefetch;
descriptor: I
flags: (0x0010) ACC_FINAL
final int limit;
descriptor: I
flags: (0x0010) ACC_FINAL
final io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber$ConcatInnerObserver inner;
descriptor: Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber$ConcatInnerObserver;
flags: (0x0010) ACC_FINAL
final java.util.concurrent.atomic.AtomicBoolean once;
descriptor: Ljava/util/concurrent/atomic/AtomicBoolean;
flags: (0x0010) ACC_FINAL
int sourceFused;
descriptor: I
flags: (0x0000)
int consumed;
descriptor: I
flags: (0x0000)
io.reactivex.internal.fuseable.SimpleQueue<io.reactivex.CompletableSource> queue;
descriptor: Lio/reactivex/internal/fuseable/SimpleQueue;
flags: (0x0000)
Signature: Lio/reactivex/internal/fuseable/SimpleQueue<Lio/reactivex/CompletableSource;>;
org.reactivestreams.Subscription upstream;
descriptor: Lorg/reactivestreams/Subscription;
flags: (0x0000)
volatile boolean done;
descriptor: Z
flags: (0x0040) ACC_VOLATILE
volatile boolean active;
descriptor: Z
flags: (0x0040) ACC_VOLATILE
void <init>(io.reactivex.CompletableObserver, int);
descriptor: (Lio/reactivex/CompletableObserver;I)V
flags: (0x0000)
Code:
stack=4, locals=3, args_size=3
start local 0 start local 1 start local 2 0: aload 0
invokespecial java.util.concurrent.atomic.AtomicInteger.<init>:()V
1: aload 0
aload 1
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.downstream:Lio/reactivex/CompletableObserver;
2: aload 0
iload 2
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.prefetch:I
3: aload 0
new io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber$ConcatInnerObserver
dup
aload 0
invokespecial io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber$ConcatInnerObserver.<init>:(Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber;)V
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.inner:Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber$ConcatInnerObserver;
4: aload 0
new java.util.concurrent.atomic.AtomicBoolean
dup
invokespecial java.util.concurrent.atomic.AtomicBoolean.<init>:()V
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.once:Ljava/util/concurrent/atomic/AtomicBoolean;
5: aload 0
iload 2
iload 2
iconst_2
ishr
isub
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.limit:I
6: return
end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 7 0 this Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber;
0 7 1 actual Lio/reactivex/CompletableObserver;
0 7 2 prefetch I
MethodParameters:
Name Flags
actual
prefetch
public void onSubscribe(org.reactivestreams.Subscription);
descriptor: (Lorg/reactivestreams/Subscription;)V
flags: (0x0001) ACC_PUBLIC
Code:
stack=4, locals=6, args_size=2
start local 0 start local 1 0: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.upstream:Lorg/reactivestreams/Subscription;
aload 1
invokestatic io.reactivex.internal.subscriptions.SubscriptionHelper.validate:(Lorg/reactivestreams/Subscription;Lorg/reactivestreams/Subscription;)Z
ifeq 27
1: aload 0
aload 1
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.upstream:Lorg/reactivestreams/Subscription;
2: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.prefetch:I
ldc 2147483647
if_icmpne 3
ldc 9223372036854775807
goto 4
StackMap locals:
StackMap stack:
3: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.prefetch:I
i2l
StackMap locals:
StackMap stack: long
4: lstore 2
start local 2 5: aload 1
instanceof io.reactivex.internal.fuseable.QueueSubscription
ifeq 21
6: aload 1
checkcast io.reactivex.internal.fuseable.QueueSubscription
astore 4
start local 4 7: aload 4
iconst_3
invokeinterface io.reactivex.internal.fuseable.QueueSubscription.requestFusion:(I)I
istore 5
start local 5 8: iload 5
iconst_1
if_icmpne 15
9: aload 0
iload 5
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.sourceFused:I
10: aload 0
aload 4
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.queue:Lio/reactivex/internal/fuseable/SimpleQueue;
11: aload 0
iconst_1
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.done:Z
12: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.downstream:Lio/reactivex/CompletableObserver;
aload 0
invokeinterface io.reactivex.CompletableObserver.onSubscribe:(Lio/reactivex/disposables/Disposable;)V
13: aload 0
invokevirtual io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.drain:()V
14: return
15: StackMap locals: long io.reactivex.internal.fuseable.QueueSubscription int
StackMap stack:
iload 5
iconst_2
if_icmpne 21
16: aload 0
iload 5
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.sourceFused:I
17: aload 0
aload 4
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.queue:Lio/reactivex/internal/fuseable/SimpleQueue;
18: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.downstream:Lio/reactivex/CompletableObserver;
aload 0
invokeinterface io.reactivex.CompletableObserver.onSubscribe:(Lio/reactivex/disposables/Disposable;)V
19: aload 1
lload 2
invokeinterface org.reactivestreams.Subscription.request:(J)V
20: return
end local 5 end local 4 21: StackMap locals:
StackMap stack:
aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.prefetch:I
ldc 2147483647
if_icmpne 24
22: aload 0
new io.reactivex.internal.queue.SpscLinkedArrayQueue
dup
invokestatic io.reactivex.Flowable.bufferSize:()I
invokespecial io.reactivex.internal.queue.SpscLinkedArrayQueue.<init>:(I)V
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.queue:Lio/reactivex/internal/fuseable/SimpleQueue;
23: goto 25
24: StackMap locals:
StackMap stack:
aload 0
new io.reactivex.internal.queue.SpscArrayQueue
dup
aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.prefetch:I
invokespecial io.reactivex.internal.queue.SpscArrayQueue.<init>:(I)V
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.queue:Lio/reactivex/internal/fuseable/SimpleQueue;
25: StackMap locals:
StackMap stack:
aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.downstream:Lio/reactivex/CompletableObserver;
aload 0
invokeinterface io.reactivex.CompletableObserver.onSubscribe:(Lio/reactivex/disposables/Disposable;)V
26: aload 1
lload 2
invokeinterface org.reactivestreams.Subscription.request:(J)V
end local 2 27: StackMap locals:
StackMap stack:
return
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 28 0 this Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber;
0 28 1 s Lorg/reactivestreams/Subscription;
5 27 2 r J
7 21 4 qs Lio/reactivex/internal/fuseable/QueueSubscription<Lio/reactivex/CompletableSource;>;
8 21 5 m I
MethodParameters:
Name Flags
s
public void onNext(io.reactivex.CompletableSource);
descriptor: (Lio/reactivex/CompletableSource;)V
flags: (0x0001) ACC_PUBLIC
Code:
stack=3, locals=2, args_size=2
start local 0 start local 1 0: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.sourceFused:I
ifne 4
1: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.queue:Lio/reactivex/internal/fuseable/SimpleQueue;
aload 1
invokeinterface io.reactivex.internal.fuseable.SimpleQueue.offer:(Ljava/lang/Object;)Z
ifne 4
2: aload 0
new io.reactivex.exceptions.MissingBackpressureException
dup
invokespecial io.reactivex.exceptions.MissingBackpressureException.<init>:()V
invokevirtual io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.onError:(Ljava/lang/Throwable;)V
3: return
4: StackMap locals:
StackMap stack:
aload 0
invokevirtual io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.drain:()V
5: return
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 6 0 this Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber;
0 6 1 t Lio/reactivex/CompletableSource;
MethodParameters:
Name Flags
t
public void onError(java.lang.Throwable);
descriptor: (Ljava/lang/Throwable;)V
flags: (0x0001) ACC_PUBLIC
Code:
stack=3, locals=2, args_size=2
start local 0 start local 1 0: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.once:Ljava/util/concurrent/atomic/AtomicBoolean;
iconst_0
iconst_1
invokevirtual java.util.concurrent.atomic.AtomicBoolean.compareAndSet:(ZZ)Z
ifeq 4
1: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.inner:Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber$ConcatInnerObserver;
invokestatic io.reactivex.internal.disposables.DisposableHelper.dispose:(Ljava/util/concurrent/atomic/AtomicReference;)Z
pop
2: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.downstream:Lio/reactivex/CompletableObserver;
aload 1
invokeinterface io.reactivex.CompletableObserver.onError:(Ljava/lang/Throwable;)V
3: goto 5
4: StackMap locals:
StackMap stack:
aload 1
invokestatic io.reactivex.plugins.RxJavaPlugins.onError:(Ljava/lang/Throwable;)V
5: StackMap locals:
StackMap stack:
return
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 6 0 this Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber;
0 6 1 t Ljava/lang/Throwable;
MethodParameters:
Name Flags
t
public void onComplete();
descriptor: ()V
flags: (0x0001) ACC_PUBLIC
Code:
stack=2, locals=1, args_size=1
start local 0 0: aload 0
iconst_1
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.done:Z
1: aload 0
invokevirtual io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.drain:()V
2: return
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 3 0 this Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber;
public void dispose();
descriptor: ()V
flags: (0x0001) ACC_PUBLIC
Code:
stack=1, locals=1, args_size=1
start local 0 0: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.upstream:Lorg/reactivestreams/Subscription;
invokeinterface org.reactivestreams.Subscription.cancel:()V
1: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.inner:Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber$ConcatInnerObserver;
invokestatic io.reactivex.internal.disposables.DisposableHelper.dispose:(Ljava/util/concurrent/atomic/AtomicReference;)Z
pop
2: return
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 3 0 this Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber;
public boolean isDisposed();
descriptor: ()Z
flags: (0x0001) ACC_PUBLIC
Code:
stack=1, locals=1, args_size=1
start local 0 0: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.inner:Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber$ConcatInnerObserver;
invokevirtual io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber$ConcatInnerObserver.get:()Ljava/lang/Object;
checkcast io.reactivex.disposables.Disposable
invokestatic io.reactivex.internal.disposables.DisposableHelper.isDisposed:(Lio/reactivex/disposables/Disposable;)Z
ireturn
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 1 0 this Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber;
void drain();
descriptor: ()V
flags: (0x0000)
Code:
stack=3, locals=4, args_size=1
start local 0 0: aload 0
invokevirtual io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.getAndIncrement:()I
ifeq 2
1: return
2: StackMap locals:
StackMap stack:
aload 0
invokevirtual io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.isDisposed:()Z
ifeq 4
3: return
4: StackMap locals:
StackMap stack:
aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.active:Z
ifne 23
5: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.done:Z
istore 1
start local 1 6: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.queue:Lio/reactivex/internal/fuseable/SimpleQueue;
invokeinterface io.reactivex.internal.fuseable.SimpleQueue.poll:()Ljava/lang/Object;
checkcast io.reactivex.CompletableSource
astore 2
start local 2 7: goto 12
end local 2 StackMap locals: io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber int
StackMap stack: java.lang.Throwable
8: astore 3
start local 3 9: aload 3
invokestatic io.reactivex.exceptions.Exceptions.throwIfFatal:(Ljava/lang/Throwable;)V
10: aload 0
aload 3
invokevirtual io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.innerError:(Ljava/lang/Throwable;)V
11: return
end local 3 start local 2 12: StackMap locals: io.reactivex.CompletableSource
StackMap stack:
aload 2
ifnonnull 13
iconst_1
goto 14
StackMap locals:
StackMap stack:
13: iconst_0
StackMap locals:
StackMap stack: int
14: istore 3
start local 3 15: iload 1
ifeq 19
iload 3
ifeq 19
16: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.once:Ljava/util/concurrent/atomic/AtomicBoolean;
iconst_0
iconst_1
invokevirtual java.util.concurrent.atomic.AtomicBoolean.compareAndSet:(ZZ)Z
ifeq 18
17: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.downstream:Lio/reactivex/CompletableObserver;
invokeinterface io.reactivex.CompletableObserver.onComplete:()V
18: StackMap locals: int
StackMap stack:
return
19: StackMap locals:
StackMap stack:
iload 3
ifne 23
20: aload 0
iconst_1
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.active:Z
21: aload 2
aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.inner:Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber$ConcatInnerObserver;
invokeinterface io.reactivex.CompletableSource.subscribe:(Lio/reactivex/CompletableObserver;)V
22: aload 0
invokevirtual io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.request:()V
end local 3 end local 2 end local 1 23: StackMap locals:
StackMap stack:
aload 0
invokevirtual io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.decrementAndGet:()I
ifne 2
24: return
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 25 0 this Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber;
6 23 1 d Z
7 8 2 cs Lio/reactivex/CompletableSource;
12 23 2 cs Lio/reactivex/CompletableSource;
9 12 3 ex Ljava/lang/Throwable;
15 23 3 empty Z
Exception table:
from to target type
6 7 8 Class java.lang.Throwable
void request();
descriptor: ()V
flags: (0x0000)
Code:
stack=3, locals=2, args_size=1
start local 0 0: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.sourceFused:I
iconst_1
if_icmpeq 7
1: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.consumed:I
iconst_1
iadd
istore 1
start local 1 2: iload 1
aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.limit:I
if_icmpne 6
3: aload 0
iconst_0
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.consumed:I
4: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.upstream:Lorg/reactivestreams/Subscription;
iload 1
i2l
invokeinterface org.reactivestreams.Subscription.request:(J)V
5: goto 7
6: StackMap locals: int
StackMap stack:
aload 0
iload 1
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.consumed:I
end local 1 7: StackMap locals:
StackMap stack:
return
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 8 0 this Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber;
2 7 1 p I
void innerError(java.lang.Throwable);
descriptor: (Ljava/lang/Throwable;)V
flags: (0x0000)
Code:
stack=3, locals=2, args_size=2
start local 0 start local 1 0: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.once:Ljava/util/concurrent/atomic/AtomicBoolean;
iconst_0
iconst_1
invokevirtual java.util.concurrent.atomic.AtomicBoolean.compareAndSet:(ZZ)Z
ifeq 4
1: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.upstream:Lorg/reactivestreams/Subscription;
invokeinterface org.reactivestreams.Subscription.cancel:()V
2: aload 0
getfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.downstream:Lio/reactivex/CompletableObserver;
aload 1
invokeinterface io.reactivex.CompletableObserver.onError:(Ljava/lang/Throwable;)V
3: goto 5
4: StackMap locals:
StackMap stack:
aload 1
invokestatic io.reactivex.plugins.RxJavaPlugins.onError:(Ljava/lang/Throwable;)V
5: StackMap locals:
StackMap stack:
return
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 6 0 this Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber;
0 6 1 e Ljava/lang/Throwable;
MethodParameters:
Name Flags
e
void innerComplete();
descriptor: ()V
flags: (0x0000)
Code:
stack=2, locals=1, args_size=1
start local 0 0: aload 0
iconst_0
putfield io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.active:Z
1: aload 0
invokevirtual io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.drain:()V
2: return
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 3 0 this Lio/reactivex/internal/operators/completable/CompletableConcat$CompletableConcatSubscriber;
public void onNext(java.lang.Object);
descriptor: (Ljava/lang/Object;)V
flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
Code:
stack=2, locals=2, args_size=2
0: aload 0
aload 1
checkcast io.reactivex.CompletableSource
invokevirtual io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber.onNext:(Lio/reactivex/CompletableSource;)V
return
LocalVariableTable:
Start End Slot Name Signature
}
Signature: Ljava/util/concurrent/atomic/AtomicInteger;Lio/reactivex/FlowableSubscriber<Lio/reactivex/CompletableSource;>;Lio/reactivex/disposables/Disposable;
SourceFile: "CompletableConcat.java"
NestHost: io.reactivex.internal.operators.completable.CompletableConcat
InnerClasses:
final CompletableConcatSubscriber = io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber of io.reactivex.internal.operators.completable.CompletableConcat
final ConcatInnerObserver = io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber$ConcatInnerObserver of io.reactivex.internal.operators.completable.CompletableConcat$CompletableConcatSubscriber