Convert JSON to AVRO using Jmeter Groovy scripting

Here is the Groovy script in JMeter to convert JSON to AVRO. Here's a simple example using Groovy:

1. **Add a JSR223 Sampler:**

   - Add a "JSR223 Sampler" to your test plan (Right-click on your Thread Group > Add > Sampler > JSR223 Sampler).

2. **Choose Language:**

   - In the JSR223 Sampler, choose "groovy" as the scripting language.

3. **Write Groovy Script:**

   - Write a Groovy script to convert JSON to Avro. You can use the Avro library for Groovy.

   - Example Groovy script:

     ```groovy

     import org.apache.avro.Schema

     import org.apache.avro.generic.GenericData

     import org.apache.avro.file.DataFileWriter

     import org.apache.avro.io.DatumWriter

     import org.apache.avro.io.EncoderFactory

     import org.apache.avro.specific.SpecificDatumWriter

     // Your JSON data as a Groovy map

     def jsonData = [

         field1: "value1",

         field2: 42

     ]

     // Your Avro schema

     def avroSchema = new Schema.Parser().parse('{"type":"record","name":"example","fields":[{"name":"field1","type":"string"},{"name":"field2","type":"int"}]}')

     // Create Avro record

     def avroRecord = new GenericData.Record(avroSchema)

     avroRecord.put("field1", jsonData.field1)

     avroRecord.put("field2", jsonData.field2)

     // Specify the Avro file path

     def avroFilePath = "path/to/your/output.avro"

     // Write Avro record to file

     def datumWriter = new SpecificDatumWriter<>(avroSchema)

     def dataFileWriter = new DataFileWriter<>(datumWriter)

     dataFileWriter.create(avroSchema, new File(avroFilePath))

     dataFileWriter.append(avroRecord)

     dataFileWriter.close()

     log.info "JSON to Avro conversion completed."

     ```

   Customize the `jsonData` map, `avroSchema`, and `avroFilePath` according to your actual data.

4. **Run the Test:**

   - Save your test plan.

   - Run the test.