✨ Support Saving New Records From External Systems

src/main/java/org/springframework/samples/petclinic/records/NewRecordModel.java

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+package org.springframework.samples.petclinic.records;
+
+public class NewRecordModel {
+
+	private final String id;
+
+	public NewRecordModel(final String id) {
+		this.id = id;
+	}
+
+	public String getId() {
+		return id;
+	}
+
+}

src/main/java/org/springframework/samples/petclinic/records/RecordsTransferController.java

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+package org.springframework.samples.petclinic.records;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.sql.PreparedStatement;
+import java.sql.SQLException;
+import java.util.UUID;
+import javax.sql.DataSource;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+
+@Controller
+class RecordsTransferController {
+
+	private final Path recordsDir;
+
+	private final DataSource dataSource;
+
+	@Autowired
+	RecordsTransferController(final DataSource dataSource) {
+		recordsDir = Path.of("records");
+		this.dataSource = dataSource;
+	}
+
+	@PostMapping("/records-transfers")
+	public NewRecordModel newRecordsTransfer(@RequestBody InputStream body) throws IOException, SQLException {
+		final var id = saveToRecordsSystem(body);
+		return new NewRecordModel(id);
+	}
+
+	private String saveToRecordsSystem(final InputStream is) throws IOException, SQLException {
+		final var id = UUID.randomUUID().toString();
+		final var path = recordsDir.resolve("record-" + id + ".json");
+		Files.copy(is, path);
+		final var connection = dataSource.getConnection();
+		final PreparedStatement statement = connection.prepareStatement("INSERT INTO records (path) VALUES ?");
+		statement.setString(1, path.toString());
+		statement.executeUpdate();
+		return id;
+	}
+
+}