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package ai.vespa.models.handler;
import ai.vespa.models.evaluation.ModelsEvaluator;
import com.yahoo.container.jdisc.HttpRequest;
import com.yahoo.container.jdisc.HttpResponse;
import com.yahoo.container.jdisc.LoggingRequestHandler;
import com.yahoo.tensor.Tensor;
import com.yahoo.tensor.serialization.JsonFormat;
import java.io.IOException;
import java.io.OutputStream;
public class ModelsEvaluationHandler extends LoggingRequestHandler {
private final ModelsEvaluator modelsEvaluator;
public ModelsEvaluationHandler(ModelsEvaluator modelsEvaluator, Context context) {
super(context);
this.modelsEvaluator = modelsEvaluator;
}
@Override
public HttpResponse handle(HttpRequest request) {
Tensor result = modelsEvaluator.evaluatorOf(property("model", "serving_default", request),
request.getProperty("function"))
.evaluate();
return new RawResponse(JsonFormat.encode(result));
}
private String property(String name, String defaultValue, HttpRequest request) {
String value = request.getProperty(name);
if (value == null) return defaultValue;
return value;
}
private static class RawResponse extends HttpResponse {
private final byte[] data;
RawResponse(byte[] data) {
super(200);
this.data = data;
}
@Override
public String getContentType() {
return "application/json";
}
@Override
public void render(OutputStream outputStream) throws IOException {
outputStream.write(data);
}
}
}
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