log_logstash: fix timestamp field to respect ISO 8601 format

Fixes #1132

diff --git a/src/log_logstash.c b/src/log_logstash.c
index 2883e6c..2d5f620 100644 (file)
--- a/src/log_logstash.c
+++ b/src/log_logstash.c
@@ -147,7 +147,7 @@ static void log_logstash_print (yajl_gen g, int severity,
         * format time as a UTC ISO 8601 compliant string
         */
        strftime (timestamp_str, sizeof (timestamp_str),
-                 "%Y-%m-%d %H:%M:%SZ", &timestamp_tm);
+                 "%Y-%m-%dT%H:%M:%SZ", &timestamp_tm);
        timestamp_str[sizeof (timestamp_str) - 1] = '\0';
 
        if (yajl_gen_string(g, (u_char *)timestamp_str,