DLT – Storage Backend

The DLT-backend plugin is currently a PoC to evaluate how to forward elos events to a Diagnostic Log and Trace infrastructures. It uses the /src/libelosdlt/ client protocol implementation.

Configuration

The configuration of the DLT storage plugin follows the usual pattern. To add an instance of a DLT storage backend add an entry like the following in the /root/elos/EventLogging/Plugins section in your elos configuration.

64                        "File": "backend_json.so",
65                        "Run": "always",
66                        "Filter": [
67                            "1 1 EQ"
68                        ],
69                        "Config": {
70                            "StoragePath": "/tmp/elosd_%host%_%date%_%count%.log",
71                            "MaxSize": 60000,
72                            "Flags": [
73                                "O_SYNC"
74                            ]

  • Connection: the connection string used to connect to a DLT daemon (currently only a path to DLT-pipe is supported)

  • EcuId: The ECU ID to be used in the log message.

  • AppId: The Application ID to be used in the log message.

You can find this example in /src/elosd/config/elosd.json.

Build

The plugin is build if ELOSD_EVENTLOGGING_BACKEND_DLT is defined in cmake.