Use of EMA ChannelSet
How can we use the different ADS servers at the same time for our 11 OmmConsumers ?
Can using EMA ChannelSet reduce the Stale status (DataStream=”Suspect” and StreamState=”Open”) when using ema-API ?
If so, do you have an example of a simple config.xml ?
The example of EmaConfigTest.xml
/RTSDK-2.0.3.L2.java.rrg/Java/Ema/Core/src/test/resources/com/refinitiv/ema/unittest/EmaFileConfigTests/EmaConfigTest.xml is very complex.
Can the Emaconfig.xml be simplified to use the Channels without giving all the technical details for the connection ?
Best Answer
-
Thank you for reaching out to us.
I don't think that the ChannelSet can reduce the Open/Suspect state. The ChannelSet specifies a comma-separated set of channels names. Each listed channel name should have an appropriate <Channel> entry in the ChannelGroup. Channels in the set will be tried with each reconnection attempt until a successful connection is made. It is used to fail-over to another server. During the fail-over, the appliaction will receieve the Open/Suspect state.
This is a simple configuration (EmaConfig.xml) for a consumer application.
<?xml version="1.0" encoding="UTF-8"?>
<EmaConfig>
<ConsumerGroup>
<DefaultConsumer value="Consumer_1"/>
<ConsumerList>
<Consumer>
<Name value="Consumer_1"/>
<ChannelSet value="Channel_1"/>
<Dictionary value="Dictionary_2"/>
</Consumer>
</ConsumerList>
</ConsumerGroup>
<ChannelGroup>
<ChannelList>
<Channel>
<Name value="Channel_1"/>
<ChannelType value="ChannelType::RSSL_SOCKET"/>
<CompressionType value="CompressionType::None"/>
<GuaranteedOutputBuffers value="5000"/>
<ConnectionPingTimeout value="30000"/>
<TcpNodelay value="1"/>
<Host value="127.0.0.1"/>
<Port value="14002"/>
</Channel>
</ChannelList>
</ChannelGroup>
<DictionaryGroup>
<DictionaryList>
<Dictionary>
<Name value="Dictionary_2"/>
<DictionaryType value="DictionaryType::FileDictionary"/>
<RdmFieldDictionaryFileName value="./RDMFieldDictionary"/>
<EnumTypeDefFileName value="./enumtype.def"/>
</Dictionary>
</DictionaryList>
</DictionaryGroup>
</EmaConfig>0
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