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Project to support the implementation a of smart derivative contract.

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/*
 /*
 * (c) Copyright Christian P. Fries, Germany. Contact: [email protected].
 *
 * Created on 15 Oct 2018
 */

package net.finmath.smartcontract.valuation.service.controllers;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.ObjectWriter;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.fasterxml.jackson.dataformat.javaprop.JavaPropsMapper;
import net.finmath.information.Library;
import net.finmath.smartcontract.api.InfoApi;
import net.finmath.smartcontract.model.ExceptionId;
import net.finmath.smartcontract.model.SDCException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpHeaders;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.RestController;

import java.io.InputStream;

/**
 * Controller for the settlement valuation REST service.
 * TODO Refactor try/catch once openapi can generate exception handling
 *
 * @author Christian Fries
 * @author Peter Kohl-Landgraf
 */
@RestController
@CrossOrigin(origins = {"http://localhost:4200", "${serviceUrl}"}, allowCredentials = "true")
public class InfoController implements InfoApi {

	private final Logger logger = LoggerFactory.getLogger(InfoController.class);
	private static final String GIT_ERROR = "Failed to get git info.";

	/**
	 * @return String Json representing the info on Git
	 */
	@Override
	public ResponseEntity infoGit() {
		HttpHeaders responseHeaders = new HttpHeaders();
		responseHeaders.add("Responded", "info git");

		try (InputStream propertiesInputStream = InfoController.class.getResourceAsStream("/git.properties")) {
			JavaPropsMapper mapper = new JavaPropsMapper();
			ObjectNode node = mapper.readValue(propertiesInputStream, ObjectNode.class);
			ObjectWriter ow = new ObjectMapper().writer().withDefaultPrettyPrinter();

			String info = ow.writeValueAsString(node);
			return ResponseEntity.ok(info);
		} catch (Exception e) {
			logger.error(GIT_ERROR);
			logger.error(e.getMessage());
			throw new SDCException(ExceptionId.SDC_GIT_ERROR, GIT_ERROR);
		}
	}

	/**
	 * @return String Json representing the info on the Library
	 */
	@Override
	public ResponseEntity infoFinmath() {

		HttpHeaders responseHeaders = new HttpHeaders();
		responseHeaders.add("Responded", "info finmath");

		try (InputStream propertiesInputStream = Library.class.getResourceAsStream("/finmath-lib.properties")) {
			JavaPropsMapper mapper = new JavaPropsMapper();
			ObjectNode node = mapper.readValue(propertiesInputStream, ObjectNode.class);
			ObjectWriter ow = new ObjectMapper().writer().withDefaultPrettyPrinter();

			String info = ow.writeValueAsString(node);
			return ResponseEntity.ok(info);
		} catch (Exception e) {
			logger.error(GIT_ERROR);
			logger.error(e.getMessage());
			throw new SDCException(ExceptionId.SDC_GIT_ERROR, GIT_ERROR);
		}
	}
}