Github user dsbos commented on a diff in the pull request:
https://github.com/apache/drill/pull/93#discussion_r35052980
--- Diff:
common/src/main/java/org/apache/drill/common/config/DrillConfig.java ---
@@ -138,34 +155,77 @@ public static DrillConfig create(Properties
testConfigurations) {
return create(null, testConfigurations, true);
}
- public static DrillConfig create(String overrideFileName, boolean
enableServerConfigs) {
- return create(overrideFileName, null, enableServerConfigs);
+ /**
+ * ...
+ * @param overrideFileResourcePathname
+ * see {@link #create(String)}'s {@code
overrideFileResourcePathname}
+ */
+ public static DrillConfig create(String overrideFileResourcePathname,
boolean enableServerConfigs) {
+ return create(overrideFileResourcePathname, null, enableServerConfigs);
}
- private static DrillConfig create(String overrideFileName, Properties
overriderProps, boolean enableServerConfigs) {
- overrideFileName = overrideFileName == null ?
CommonConstants.CONFIG_OVERRIDE : overrideFileName;
-
- // first we load defaults.
+ /**
+ * ...
+ * @param overrideFileResourcePathname
+ * see {@link #create(String)}'s {@code
overrideFileResourcePathname}
+ * @param overriderProps
+ * optional property map for further overriding (after override
file
+ * is assimilated
+ * @param enableServerConfigs
+ * whether to enable server-specific configuration options
+ * @return
+ */
+ private static DrillConfig create(String overrideFileResourcePathname,
+ final Properties overriderProps,
+ final boolean enableServerConfigs) {
+ overrideFileResourcePathname =
+ overrideFileResourcePathname == null
+ ? CommonConstants.CONFIG_OVERRIDE
+ : overrideFileResourcePathname;
+
+ // 1. Load defaults configuration file.
Config fallback = null;
final ClassLoader[] classLoaders = ClasspathHelper.classLoaders();
for (ClassLoader classLoader : classLoaders) {
- if (classLoader.getResource(CommonConstants.CONFIG_DEFAULT) != null)
{
- fallback = ConfigFactory.load(classLoader,
CommonConstants.CONFIG_DEFAULT);
+ final URL url =
+ classLoader.getResource(CommonConstants.CONFIG_DEFAULT);
+ if (null != url) {
+ logger.debug("Loading base config. file at {}.", url);
+ fallback =
+ ConfigFactory.load(classLoader,
+ CommonConstants.CONFIG_DEFAULT);
break;
}
}
+ // 2. Load per-module configuration files.
Collection<URL> urls = PathScanner.getConfigURLs();
logger.debug("Loading configs at the following URLs {}", urls);
for (URL url : urls) {
+ logger.debug("Loading module config. file at {}.", url);
fallback = ConfigFactory.parseURL(url).withFallback(fallback);
}
- Config effectiveConfig =
ConfigFactory.load(overrideFileName).withFallback(fallback);
+ // 3. Load any overrides configuration file and overrides from JVM
--- End diff --
Reworded a bit.
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