diff options
Diffstat (limited to 'src/feature/hs/hs_metrics.c')
| -rw-r--r-- | src/feature/hs/hs_metrics.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/feature/hs/hs_metrics.c b/src/feature/hs/hs_metrics.c index e023eab90c..891029aded 100644 --- a/src/feature/hs/hs_metrics.c +++ b/src/feature/hs/hs_metrics.c @@ -32,12 +32,16 @@ port_to_str(const uint16_t port) /** Return a static buffer pointer that contains a formatted label on the form * of key=value. * + * NOTE: Important, label values MUST NOT contain double quotes else, in the + * case of Prometheus, it will fail with a malformed line because we force the + * label value to be enclosed in double quotes. + * * Subsequent call to this function invalidates the previous buffer. */ static const char * format_label(const char *key, const char *value) { static char buf[128]; - tor_snprintf(buf, sizeof(buf), "%s=%s", key, value); + tor_snprintf(buf, sizeof(buf), "%s=\"%s\"", key, value); return buf; } |