[*] Add support for system properties to configure TimeBase file syst…

java/timebase/commons/src/main/java/com/epam/deltix/qsrv/config/QuantServiceConfig.java

@@ -193,10 +193,28 @@ public String               getString (String key) {
         return (getString(key, null));
     }
 
+    /**
+     *
+     * @param key property key
+     * @param defaultValue default value
+     * @return String value of the property, null if property is not present.
+     */
     public String               getString (String key, String defaultValue) {
+        String fullName = prefix(myType) + key;
         return (getString(myType, key, defaultValue));
     }
 
+    /**
+     *
+     * @param key property key
+     * @param useSystemDefault use system variable with same name as default value
+     * @return String value of the property, null if property is not present.
+     */
+    public String               getString (String key, boolean useSystemDefault) {
+        String fullName = prefix(myType) + key;
+        return (getString(myType, key, useSystemDefault ? System.getProperty(fullName) : null));
+    }
+
     public int                  getInt (String key, int defaultValue) {
         return (getInt(myType, key, defaultValue));
     }
@@ -330,11 +348,20 @@ public void                 setPropertySoft (Type type, String key, Object value
         }
     }
 
-    /** @return property bu full key */
-    public String               getExactProperty (String key) {
-        return props.getProperty(key);
+    /**
+     * Return fully-qualified name of the property
+     * @param key property key
+     * @return fully-qualified property name
+     */
+    public String               getFullName(String key) {
+        return prefix (myType) + key;
     }
 
+//    /** @return property by full key */
+//    public String               getExactProperty (String key) {
+//        return props.getProperty(key);
+//    }
+
     public String               getString (Type type, String key, String defaultValue) {
         return StringUtils.trim((props.getProperty (prefix (type) + key, defaultValue)));
     }

java/timebase/server/src/main/java/com/epam/deltix/qsrv/config/TimebaseServiceExecutor.java

@@ -308,12 +308,45 @@ private String getPublicAddressForAeron(QuantServiceConfig config) {
         return publicAddressForAeron;
     }
 
+    static String getString(QuantServiceConfig config, String key, String defaultValue) {
+        String name = config.getFullName(key);
+
+        String value = System.getProperty(name, null);
+        if (value != null)
+            return value;
+
+        return config.getString(key, defaultValue);
+    }
+
+    static boolean getBoolean(QuantServiceConfig config, String key, boolean defaultValue) {
+        String name = config.getFullName(key);
+
+        String value = System.getProperty(name, null);
+        if (value == null) {
+            return config.getBoolean(key, defaultValue);
+        }
+
+        return Boolean.getBoolean(name);
+    }
+
+    static int getInteger(QuantServiceConfig config, String key, int defaultValue) {
+        String name = config.getFullName(key);
+
+        String value = System.getProperty(name, null);
+        if (value == null) {
+            return config.getInt(key, defaultValue);
+        }
+
+        return Integer.getInteger(name);
+    }
+
     @Nonnull
     public static FSOptions getFsOptionsFromConfig(QuantServiceConfig config) {
         FSOptions options = new FSOptions();
-        options.compression = config.getString("fileSystem.compression", options.compression);
-        options.maxFolderSize = config.getInt("fileSystem.maxFolderSize", options.maxFolderSize);
-        options.maxFileSize = config.getInt("fileSystem.maxFileSize", options.maxFileSize);
+
+        options.compression = getString(config, "fileSystem.compression", options.compression);
+        options.maxFolderSize = getInteger(config, "fileSystem.maxFolderSize", options.maxFolderSize);
+        options.maxFileSize = getInteger(config, "fileSystem.maxFileSize", options.maxFileSize);
 
         FSType fs = getFSType(config);
         if (fs == FSType.HDFS) {