Add loggingLevel option

Author: kornilova203

Diff for: README.md

@@ -30,6 +30,7 @@ Recognized properties are the following:
       * `sslenabled=true/false`
       * `meta.sampling.size=<integer>` specifies a number of documents fetched in order to infer a database schema
       * `query.scan.consistency=not_bounded/request_plus` specifies a query scan consistency (RYW consistency) [default value is `not_bounded`]
+      * `loggingLevel` [default value is `severe`]
   * Propagated to a Couchbase cluster
       * The full list of recognized parameters is documented in the Couchbase [Client-Settings Documentation](https://docs.couchbase.com/java-sdk/current/ref/client-settings.html).
       Any client setting with a system property name may also be specified as a connection string parameter (without the com.couchbase.env. prefix).

Diff for: driver/src/main/java/com/intellij/CouchbaseClientURI.java

@@ -10,6 +10,10 @@
 
 import java.sql.SQLException;
 import java.util.*;
+import java.util.logging.ConsoleHandler;
+import java.util.logging.Handler;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 import java.util.stream.Collectors;
 
 import static com.intellij.DriverPropertyInfoHelper.*;
@@ -57,6 +61,8 @@ public CouchbaseClientURI(@NotNull String uri, @Nullable Properties info) {
             serverPart = serverPart.substring(0, lastSlashIndex);
         }
 
+        setLoggingLevel(info, options);
+
         this.userName = getOption(info, options, USER, null);
         this.password = getOption(info, options, PASSWORD, null);
         this.sslEnabled = isTrue(getOption(info, options, ENABLE_SSL, ENABLE_SSL_DEFAULT));
@@ -67,6 +73,26 @@ public CouchbaseClientURI(@NotNull String uri, @Nullable Properties info) {
         this.connectionString = createConnectionString(serverPart, options);
     }
 
+    private void setLoggingLevel(Properties info, Map<String, List<String>> options) {
+        Logger logger = Logger.getLogger("com.couchbase.client");
+        String logLevel = getOption(info, options, LOGGING_LEVEL, LOGGING_LEVEL_DEFAULT);
+        if (logLevel == null) return;
+        Level level;
+        try {
+            level = Level.parse(logLevel.toUpperCase(Locale.ENGLISH));
+        }
+        catch (IllegalArgumentException e) {
+            e.printStackTrace();
+            return;
+        }
+        logger.setLevel(level);
+        for (Handler h : logger.getParent().getHandlers()) {
+            if (h instanceof ConsoleHandler) {
+                h.setLevel(level);
+            }
+        }
+    }
+
     /**
      * @return option from properties or from uri if it is not found in properties.
      * null if options was not found.

Diff for: driver/src/main/java/com/intellij/DriverPropertyInfoHelper.java

@@ -27,6 +27,10 @@ public class DriverPropertyInfoHelper {
 
     public static final String DEFAULT_BUCKET = "defaultBucket";
 
+    public static final String LOGGING_LEVEL = "loggingLevel";
+    public static final String LOGGING_LEVEL_DEFAULT = "severe";
+    private static final String[] LOGGING_LEVEL_CHOICES = new String[]{"off", "severe", "warning", "info", "fine", "all"};
+
 
     public static DriverPropertyInfo[] getPropertyInfo() {
         ArrayList<DriverPropertyInfo> propInfos = new ArrayList<>();
@@ -46,6 +50,8 @@ public static DriverPropertyInfo[] getPropertyInfo() {
                 "Query scan consistency.",
                 ScanConsistency.CHOICES);
 
+        addPropInfo(propInfos, LOGGING_LEVEL, LOGGING_LEVEL_DEFAULT, "", LOGGING_LEVEL_CHOICES);
+
         return propInfos.toArray(new DriverPropertyInfo[0]);
     }