Use of EMA ChannelSet

luc.dossche

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 ?

Jirapongse

@luc.dossche

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>