internal/load-version-from-file (#488)

* Load version from the specific file and show content in the root endpoint.

* Fixed checkstyle issue

* DO not log anything if the VERSION file does not exist. Added VERSION file path into cfg property.

* Append every line into final String.

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/RootConverter.java

@@ -9,8 +9,15 @@
 
 import static org.dspace.app.util.Util.getSourceVersion;
 
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+
+import org.apache.commons.lang3.StringUtils;
 import org.dspace.app.rest.model.RootRest;
 import org.dspace.services.ConfigurationService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
@@ -19,6 +26,7 @@
  */
 @Component
 public class RootConverter {
+    private static final Logger log = LoggerFactory.getLogger(RootConverter.class);
 
     @Autowired
     private ConfigurationService configurationService;
@@ -29,6 +37,37 @@ public RootRest convert() {
         rootRest.setDspaceUI(configurationService.getProperty("dspace.ui.url"));
         rootRest.setDspaceServer(configurationService.getProperty("dspace.server.url"));
         rootRest.setDspaceVersion("DSpace " + getSourceVersion());
+        rootRest.setBuildVersion(getBuildVersion());
         return rootRest;
     }
+
+    /**
+     * Read the build version from the `build.version.file.path` property
+     *
+     * @return content of the version file
+     */
+    private String getBuildVersion() {
+        String bVersionFilePath = configurationService.getProperty("build.version.file.path");
+
+        if (StringUtils.isBlank(bVersionFilePath)) {
+            return "Unknown";
+        }
+
+        StringBuilder buildVersion = new StringBuilder();
+        try {
+            FileReader fileReader = new FileReader(bVersionFilePath);
+            BufferedReader bufferedReader = new BufferedReader(fileReader);
+
+            String line;
+            // Read each line from the file until the end of the file is reached
+            while ((line = bufferedReader.readLine()) != null) {
+                buildVersion.append(line);
+            }
+
+        } catch (IOException e) {
+            // Empty - do not log anything
+        }
+
+        return buildVersion.toString();
+    }
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/model/RootRest.java

@@ -22,6 +22,8 @@ public class RootRest extends RestAddressableModel {
     private String dspaceServer;
     private String dspaceVersion;
 
+    private String buildVersion;
+
     public String getCategory() {
         return CATEGORY;
     }
@@ -67,6 +69,14 @@ public void setDspaceVersion(String dspaceVersion) {
         this.dspaceVersion = dspaceVersion;
     }
 
+    public String getBuildVersion() {
+        return buildVersion;
+    }
+
+    public void setBuildVersion(String buildVersion) {
+        this.buildVersion = buildVersion;
+    }
+
     @Override
     public boolean equals(Object object) {
         return (object instanceof RootRest &&
@@ -76,6 +86,7 @@ public boolean equals(Object object) {
                                .append(this.getDspaceUI(), ((RootRest) object).getDspaceUI())
                                .append(this.getDspaceName(), ((RootRest) object).getDspaceName())
                                .append(this.getDspaceServer(), ((RootRest) object).getDspaceServer())
+                               .append(this.getBuildVersion(), ((RootRest) object).getBuildVersion())
                                .isEquals());
     }
 
@@ -88,6 +99,7 @@ public int hashCode() {
             .append(this.getDspaceName())
             .append(this.getDspaceUI())
             .append(this.getDspaceServer())
+            .append(this.getBuildVersion())
             .toHashCode();
     }
 }

dspace/config/clarin-dspace.cfg

@@ -246,3 +246,7 @@ file.preview.enabled = false
 ### Storage service ###
 # Synchronization is NOT enabled by default
 sync.storage.service.enabled = true
+
+
+### The build version is stored in the specific file ###
+build.version.file.path = dspace/config/VERSION_D.txt