log useful exceptions instead of swallowing them

src/main/java/org/javaswift/joss/client/core/AbstractObjectStoreEntity.java

@@ -151,7 +151,7 @@ public String getPath() {
         try {
             return getPathForEntity();
         } catch (Exception e) {
-            throw new CommandException("Unable to encode the object path");
+            throw new CommandException("Unable to encode the object path", e);
         }
     }
 

src/main/java/org/javaswift/joss/client/factory/TempUrlHashPrefixSource.java

@@ -14,7 +14,7 @@ public static String getPath(String url) {
         try {
             return new URL(url).getPath();
         } catch (MalformedURLException e) {
-            throw new CommandException("Unable to parse URL "+url);
+            throw new CommandException("Unable to parse URL "+url, e);
         }
     }
 

src/main/java/org/javaswift/joss/client/impl/ProxyConfigurer.java

@@ -38,7 +38,7 @@ public void configureHttpClientBuilder(HttpClientBuilder clientBuilder) {
             }
             clientBuilder.setProxy(createProxy());
         } catch (Exception e) {
-            LOG.error("JOSS / Invalid proxy authorization settings");
+            LOG.error("JOSS / Invalid proxy authorization settings", e);
         }
     }
 

src/main/java/org/javaswift/joss/command/impl/core/AbstractCommand.java

@@ -57,10 +57,12 @@ public N call() {
             throw err;
         } catch (IOException err) {
         	request.releaseConnection();
-            throw new CommandException("Unable to execute the HTTP call or to convert the HTTP Response", err);
+            throw new CommandException("Unable to execute the HTTP call or to convert the HTTP Response. Request URI: " + request.getURI(), err);
         } finally {
             if (closeStreamAutomatically()) {
-                try { close(); } catch (IOException err) { /* ignore */ }
+                try { close(); } catch (IOException err) {
+                    LOG.warn("Failed to close response. Request URI: " + request.getURI(), err);
+                }
             }
         }
     }

src/main/java/org/javaswift/joss/command/impl/core/AbstractSecureCommand.java

@@ -31,6 +31,7 @@ public N call() {
             return super.call();
         } catch (UnauthorizedException err) {
             if (account.isAllowReauthenticate()) {
+                LOG.info("Attempting to re-authenticate due to authorization failure " + err.getMessage());
                 Access access = account.authenticate();
                 if (account.getPreferredRegion() != null) {
                     access.setPreferredRegion(account.getPreferredRegion());

src/main/java/org/javaswift/joss/headers/object/ObjectLastModified.java

@@ -37,7 +37,7 @@ public static ObjectLastModified fromResponse(HttpResponse response) {
         try {
             return new ObjectLastModified(convertResponseHeader(response, LAST_MODIFIED));
         } catch (DateParseException e) {
-            throw new CommandException("Unable to convert date string");
+            throw new CommandException("Unable to convert date string", e);
         }
     }
 }

src/main/java/org/javaswift/joss/swift/Swift.java

@@ -21,6 +21,8 @@
 import org.javaswift.joss.swift.scheduled.ObjectDeleter;
 import org.javaswift.joss.swift.statusgenerator.StatusGenerator;
 import org.javaswift.joss.util.LocalTime;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.*;
 import java.io.File;
@@ -31,6 +33,8 @@
 */
 public class Swift {
 
+    public static final Logger LOG = LoggerFactory.getLogger(Swift.class);
+
     private Map<String, SwiftContainer> containers = new TreeMap<String, SwiftContainer>();
 
     private boolean allowObjectDeleter;
@@ -443,6 +447,7 @@ public SwiftResult<Object> downloadObject(Container container, StoredObject obje
             os = new FileOutputStream(targetFile);
             IOUtils.copy(is, os);
         } catch (IOException err) {
+            LOG.error("Failed when downloading object", err);
             return new SwiftResult<Object>(HttpStatus.SC_UNPROCESSABLE_ENTITY);
         } finally {
             closeStreams(is, os);

src/main/java/org/javaswift/joss/swift/SwiftStoredObject.java

@@ -10,13 +10,17 @@
 import org.javaswift.joss.instructions.UploadInstructions;
 import org.javaswift.joss.model.*;
 import org.javaswift.joss.util.LocalTime;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import javax.activation.MimetypesFileTypeMap;
 import java.io.IOException;
 import java.util.*;
 
 public class SwiftStoredObject implements ListSubject, DirectoryOrObject {
 
+    public static final Logger LOG = LoggerFactory.getLogger(Swift.class);
+
     private String name;
 
     private byte[] content;
@@ -87,6 +91,7 @@ public SwiftResult<Object> uploadObject(UploadInstructions uploadInstructions) {
                         new ObjectContentType(new MimetypesFileTypeMap().getContentType(getName()));
             return new SwiftResult<Object>(HttpStatus.SC_CREATED);
         } catch (IOException err) {
+            LOG.error("Failed when uploading object", err);
             return new SwiftResult<Object>(HttpStatus.SC_UNPROCESSABLE_ENTITY);
         }
     }