JordanFromChina opened a new issue, #2394:
URL: https://github.com/apache/plc4x/issues/2394
### What happened?
// connected a S1500 PLC and cache it
// create PlcReadRequest instance and cache it
//get PlcReadRequest from cache
//a loop call program below
```
PlcReadRequest readRequest = cachedRequest.get(...);
PlcReadResponse response = readRequest.execute()
.get(OpcConfig.synchronized_millisecond * 30, TimeUnit.MILLISECONDS);
Thread.sleep(100);
PlcResponseCode code;
Object value;
for (String fieldName : response.getTagNames()) {
try {
code = response.getResponseCode(fieldName);
if (code == PlcResponseCode.OK) {
....
} else {
log.error("field: {} responseCode: {}", fieldName, code);
}
}
catch (InterruptedException e) {
throw e;
}
catch (Exception e) {
String msg = e.getMessage();
log.error(fieldName , e);
}
```
the logback file logged errors below sometimes
[plc4x-tm-thread-1] i.n.c.e.EmbeddedChannel - More than one exception was
raised. Will report only the first one and log others.
java.lang.NullPointerException: Cannot invoke
"io.netty.channel.ChannelPromise.setUncancellable()" because "entry.promise" is
null
at
io.netty.channel.ChannelOutboundBuffer.addFlush(ChannelOutboundBuffer.java:150)
at
io.netty.channel.AbstractChannel$AbstractUnsafe.flush(AbstractChannel.java:894)
at
io.netty.channel.embedded.EmbeddedChannel$EmbeddedUnsafe$1.flush(EmbeddedChannel.java:894)
at
io.netty.channel.DefaultChannelPipeline$HeadContext.flush(DefaultChannelPipeline.java:1372)
at
io.netty.channel.AbstractChannelHandlerContext.invokeFlush0(AbstractChannelHandlerContext.java:921)
at
io.netty.channel.AbstractChannelHandlerContext.invokeFlush(AbstractChannelHandlerContext.java:907)
at
io.netty.channel.AbstractChannelHandlerContext.flush(AbstractChannelHandlerContext.java:893)
at
io.netty.channel.ChannelDuplexHandler.flush(ChannelDuplexHandler.java:127)
at
io.netty.channel.AbstractChannelHandlerContext.invokeFlush0(AbstractChannelHandlerContext.java:923)
at
io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:941)
at
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:966)
at
io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:934)
at
io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:984)
at
io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1025)
at
org.apache.plc4x.java.spi.Plc4xNettyWrapper$1.sendToWire(Plc4xNettyWrapper.java:100)
at
org.apache.plc4x.java.spi.internal.DefaultSendRequestContext.handle(DefaultSendRequestContext.java:108)
at
org.apache.plc4x.java.spi.internal.DefaultSendRequestContext.handle(DefaultSendRequestContext.java:1)
at
org.apache.plc4x.java.s7.readwrite.protocol.S7ProtocolLogic.lambda$42(S7ProtocolLogic.java:1535)
at
org.apache.plc4x.java.spi.transaction.RequestTransactionManager$TransactionOperation.run(RequestTransactionManager.java:225)
at
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:840)
### Version
v0.13.1
### Programming Languages
- [ ] plc4c
- [ ] plc4go
- [x] plc4j
- [ ] plc4net
- [ ] plc4py
### Protocols
- [ ] AB-Ethernet
- [ ] ADS /AMS
- [ ] BACnet/IP
- [ ] C-Bus
- [ ] CANopen
- [ ] EtherNet/IP
- [ ] Firmata
- [ ] IEC-69870
- [ ] KNXnet/IP
- [ ] Modbus
- [ ] OPC-UA
- [ ] Profinet
- [x] S7
- [ ] S7-light
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