tests/cli_tests/opcua_test.bash
author Edouard Tisserant <edouard.tisserant@gmail.com>
Sat, 25 May 2024 16:45:38 +0200
changeset 3951 fe7c5e8b20bb
parent 3820 46f3ca3f0157
permissions -rw-r--r--
Fix python path in readme.
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#!/bin/bash
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rm -f ./SRVOK ./PLCOK
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# Run server
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$BEREMIZPYTHONPATH - > >(
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    echo "Start SRV loop"
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    while read line; do 
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        # Wait for server to print modified value
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        echo "SRV>> $line"
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        if [[ "$line" == 3.4 ]]; then
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            echo "PLC could write value"
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            touch ./SRVOK
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        fi
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    done
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    echo "End SRV loop"
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) << EOF &
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import sys
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import os
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import time
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import asyncio
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from asyncua import Server
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async def main():
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    server = Server()
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    host = os.environ.get("OPCUA_DEFAULT_HOST", "127.0.0.1")
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    endpoint = "opc.tcp://"+host+":4840/freeopcua/server/"
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    await server.init()
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    server.set_endpoint(endpoint)
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    uri = "http://beremiz.github.io"
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    idx = await server.register_namespace(uri)
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    objects = server.get_objects_node()
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    testobj = await objects.add_object(idx, "TestObject")
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    testvarout = await testobj.add_variable(idx, "TestOut", 1.2)
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    testvar = await testobj.add_variable(idx, "TestIn", 5.6)
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    await testvar.set_writable()
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    await server.start()
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    try:
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        while True:
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            await asyncio.sleep(1)
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            print(await testvar.get_value())
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            sys.stdout.flush()
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    finally:
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        await server.stop()
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asyncio.run(main())
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EOF
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SERVER_PID=$!
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# Start PLC with opcua test
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setsid $BEREMIZPYTHONPATH $BEREMIZPATH/Beremiz_cli.py -k \
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     --project-home $BEREMIZPATH/tests/projects/opcua_client build transfer run > >(
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echo "Start PLC loop"
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while read line; do 
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    # Wait for PLC runtime to output expected value on stdout
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    echo "PLC>> $line"
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    if [[ "$line" == 1.2 ]]; then
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        echo "PLC could read value"
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        touch ./PLCOK
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    fi
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done
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echo "End PLC loop"
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) &
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PLC_PID=$!
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echo all subprocess started, start polling results
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res=110  # default to ETIMEDOUT
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c=30
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while ((c--)); do
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    if [[ -a ./SRVOK && -a ./PLCOK ]]; then
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        echo got results.
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        res=0  # OK success
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        break
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    else
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        echo waiting.... $c
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        sleep 1
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    fi
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done
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# Kill PLC and subprocess
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echo will kill PLC:$PLC_PID and SERVER:$SERVER_PID
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pkill -s $PLC_PID 
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kill $SERVER_PID
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exit $res