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Fix critical issue with open file handle leak on user guide folder 

(cherry picked from commit fa723c07ae)
This commit is contained in:
George Kalampokis 2022-07-28 11:23:39 +03:00 committed by Diamantis Tziotzios
parent 14c267c97e
commit 7a71110033
2 changed files with 32 additions and 27 deletions
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47
dmp-backend/web/src/main/java/eu/eudat/controllers/UserGuideController.java
View File

@ -20,6 +20,7 @@ import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;
import java.util.stream.Stream;
@ -41,32 +42,36 @@ public class UserGuideController {
@RequestMapping(path = "{lang}", method = RequestMethod.GET )
public ResponseEntity getUserGuide(@PathVariable(name = "lang") String lang) throws IOException {
long files = Files.list(Paths.get(this.environment.getProperty("userguide.path"))).count();
metricsManager.calculateValue(MetricNames.LANGUAGES, (int) files, null);
Stream<Path> walk = Files.walk(Paths.get(this.environment.getProperty("userguide.path")));
List<String> result = walk.filter(Files::isRegularFile)
.map(Path::toString).collect(Collectors.toList());
String fileName = result.stream().filter(guide -> guide.contains("_" + lang)).findFirst().orElse(null);
if (fileName == null) {
fileName = result.stream().filter(guide -> guide.contains("_en")).findFirst().get();
long files = 0;
try (Stream<Path> paths = Files.list(Paths.get(Objects.requireNonNull(this.environment.getProperty("userguide.path"))))) {
files = paths.count();
}
InputStream is = new FileInputStream(fileName);
metricsManager.calculateValue(MetricNames.LANGUAGES, (int) files, null);
try (Stream<Path> paths = Files.walk(Paths.get(Objects.requireNonNull(this.environment.getProperty("userguide.path"))))) {
List<String> result = paths.filter(Files::isRegularFile)
.map(Path::toString).collect(Collectors.toList());
Path path = Paths.get(fileName);
String fileName = result.stream().filter(guide -> guide.contains("_" + lang)).findFirst().orElse(null);
if (fileName == null) {
fileName = result.stream().filter(guide -> guide.contains("_en")).findFirst().get();
}
InputStream is = new FileInputStream(fileName);
HttpHeaders responseHeaders = new HttpHeaders();
responseHeaders.setContentLength(is.available());
responseHeaders.setContentType(MediaType.TEXT_HTML);
responseHeaders.set("Content-Disposition", "attachment;filename=" + path.getFileName().toString());
responseHeaders.set("Access-Control-Expose-Headers", "Content-Disposition");
responseHeaders.get("Access-Control-Expose-Headers").add("Content-Type");
Path path = Paths.get(fileName);
byte[] content = new byte[is.available()];
is.read(content);
is.close();
HttpHeaders responseHeaders = new HttpHeaders();
responseHeaders.setContentLength(is.available());
responseHeaders.setContentType(MediaType.TEXT_HTML);
responseHeaders.set("Content-Disposition", "attachment;filename=" + path.getFileName().toString());
responseHeaders.set("Access-Control-Expose-Headers", "Content-Disposition");
responseHeaders.get("Access-Control-Expose-Headers").add("Content-Type");
return new ResponseEntity<>(content, responseHeaders, HttpStatus.OK);
byte[] content = new byte[is.available()];
is.read(content);
is.close();
return new ResponseEntity<>(content, responseHeaders, HttpStatus.OK);
}
}

12
dmp-backend/web/src/main/java/eu/eudat/logic/managers/MetricsManager.java
View File

@ -17,15 +17,13 @@ import javax.annotation.PostConstruct;
import javax.transaction.Transactional;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.ZoneId;
import java.util.Collections;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.Stream;
@ -179,8 +177,10 @@ public class MetricsManager {
calculateValue(MetricNames.USERS, (int) userManager.countActiveUsers().intValue(), MetricNames.LOGGEDIN);
calculateValue(MetricNames.USERS, (int) userManager.countAllUsers().intValue(), MetricNames.TOTAL);
long files = Files.list(Paths.get(this.environment.getProperty("userguide.path"))).count();
calculateValue(MetricNames.LANGUAGES, (int) files, null);
try (Stream<Path> paths = Files.list(Paths.get(Objects.requireNonNull(this.environment.getProperty("userguide.path"))))) {
long files = paths.count();
calculateValue(MetricNames.LANGUAGES, (int) files, null);
}
calculateValue(MetricNames.INSTALLATIONS, 1, null);
calculateValue(MetricNames.NEXUS + MetricNames.INSTALLATIONS, 1, null);