ferhui commented on a change in pull request #2327:
URL: https://github.com/apache/hadoop/pull/2327#discussion_r494114383
##########
File path:
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/CallerContext.java
##########
@@ -108,24 +117,86 @@ public String toString() {
}
/** The caller context builder. */
- public static final class Builder {
- private final String context;
+ public static final class Builder implements Configurable {
+ private String context;
private byte[] signature;
+ private Configuration conf = new Configuration();
public Builder(String context) {
this.context = context;
}
+ public Builder(String key, String value, String kvSeparator) {
+ this.context = new StringBuilder(key)
+ .append(kvSeparator)
+ .append(value)
+ .toString();
+ }
+
public Builder setSignature(byte[] signature) {
if (signature != null && signature.length > 0) {
this.signature = Arrays.copyOf(signature, signature.length);
}
return this;
}
+ /**
+ * Append new item to the context.
+ * @param item
+ * @return builder
+ */
+ public Builder append(String item) {
+ if (CallerContext.isContextValid(context)) {
+ this.context = new StringBuilder(context)
+ .append(conf.get(HADOOP_CALLER_CONTEXT_ITEM_SEPARATOR_KEY,
+ HADOOP_CALLER_CONTEXT_ITEM_SEPARATOR_DEFAULT))
+ .append(item)
+ .toString();
+ } else {
+ this.context = item;
+ }
+ return this;
+ }
+
+ /**
+ * Append new item which contains key and value to the context.
+ * @param key
+ * @param value
+ * @param kvSeparator
+ * @return builder
+ */
+ public Builder append(String key, String value, String kvSeparator) {
Review comment:
Now there isn't. Want to use append in RBF, for example, add callerip to
context, append("CallerIp", "x.x.x.x", ":"). If this method is useless， we can
remove it.
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