forgot to commit change_log_mode utility

git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@2438 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe

util/change_log_mode.cpp

@@ -0,0 +1,45 @@
+/*
+ * change_log_mode.cpp
+ *
+ *  Created on: Apr 20, 2011
+ *      Author: sears
+ */
+
+
+#include "../tcpclient.h"
+#include "../network.h"
+#include "../datatuple.h"
+
+void usage(char * argv[]) {
+    fprintf(stderr, "usage %s [host [port]]\n", argv[0]);
+}
+#include "util_main.h"
+int main(int argc, char * argv[]) {
+	int mode = -1;
+	char ** orig_argv = argv;
+	if(argc > 1) {
+		char * end;
+		int n = strtod(argv[1], &end);
+		if(argv[1][0] && !*end) {
+			mode = n;
+			argc--;
+			argv++;
+		}
+	}
+	if(mode == -1) { usage(orig_argv); return 1; }
+
+    logstore_handle_t * l = util_open_conn(argc, argv);
+
+    datatuple * tup = datatuple::create(&mode, sizeof(mode));
+
+    datatuple * ret = logstore_client_op(l, OP_DBG_SET_LOG_MODE, tup);
+
+    if(ret == NULL) {
+      perror("Changing log mode failed.."); return 3;
+    } else {
+      datatuple::freetuple(ret);
+    }
+    logstore_client_close(l);
+    printf("Log mode changed.\n");
+    return 0;
+}