Text format parsing error in line 79

[davidnewhall]

Hello,

I'm trying to put OpenDJ metrics into CloudWatch. OpenDJ has a prometheus exporter, so this app felt like a good fit. I tried it and got the following message before the application exits.

$ prometheus-to-cloudwatch  -cloudwatch_publish_timeout 5 -prometheus_scrape_interval 60 -prometheus_scrape_url http://localhost:8080/metrics/prometheus -cloudwatch_namespace OpenDJ -cloudwatch_region us-east-2
2021/03/13 11:15:11 prometheus-to-cloudwatch: Starting prometheus-to-cloudwatch bridge
2021/03/13 11:16:11 reading text format failed: text format parsing error in line 79: second HELP line for metric name "ds_backend_entry_count"

---

Here's a snippet from http://localhost:8080/metrics/prometheus. The fourth line in this snippet is line 79 in the payload.

# HELP ds_backend_ttl_thread_count Number of active time-to-live threads
# TYPE ds_backend_ttl_thread_count gauge
ds_backend_ttl_thread_count{backend="userRoot",type="db",} 0.0
# HELP ds_backend_entry_count Number of subordinate entries of the base DN, including the base DN
# TYPE ds_backend_entry_count gauge
ds_backend_entry_count{backend="__config.ldif__",base_dn="cn=config",type="local",} 188.0
# HELP ds_backend_is_private Whether the base DNs of this backend should be considered public or private
# TYPE ds_backend_is_private gauge
ds_backend_is_private{backend="__config.ldif__",type="local",} 1.0
# HELP ds_backend_entry_count Number of subordinate entries of the base DN, including the base DN
# TYPE ds_backend_entry_count gauge
ds_backend_entry_count{backend="adminRoot",base_dn="cn=admin data",type="local",} 8.0
# HELP ds_backend_is_private Whether the base DNs of this backend should be considered public or private
# TYPE ds_backend_is_private gauge
ds_backend_is_private{backend="adminRoot",type="local",} 1.0
# HELP ds_backend_entry_count Number of subordinate entries of the base DN, including the base DN
# TYPE ds_backend_entry_count gauge
ds_backend_entry_count{backend="ads-truststore",base_dn="cn=ads-truststore",type="local",} 3.0
# HELP ds_backend_is_private Whether the base DNs of this backend should be considered public or private
# TYPE ds_backend_is_private gauge
ds_backend_is_private{backend="ads-truststore",type="local",} 1.0
# HELP ds_backend_entry_count Number of subordinate entries of the base DN, including the base DN
# TYPE ds_backend_entry_count gauge
ds_backend_entry_count{backend="backup",base_dn="cn=backups",type="local",} 1.0
# HELP ds_backend_is_private Whether the base DNs of this backend should be considered public or private
# TYPE ds_backend_is_private gauge
ds_backend_is_private{backend="backup",type="local",} 1.0
# HELP ds_backend_entry_count Number of subordinate entries of the base DN, including the base DN
# TYPE ds_backend_entry_count gauge
ds_backend_entry_count{backend="monitor",base_dn="cn=monitor",type="local",} 36.0
# HELP ds_backend_is_private Whether the base DNs of this backend should be considered public or private
# TYPE ds_backend_is_private gauge
ds_backend_is_private{backend="monitor",type="local",} 1.0
# HELP ds_backend_entry_count Number of subordinate entries of the base DN, including the base DN
# TYPE ds_backend_entry_count gauge
ds_backend_entry_count{backend="rootUser",base_dn="cn=Directory Manager",type="local",} 1.0
# HELP ds_backend_is_private Whether the base DNs of this backend should be considered public or private
# TYPE ds_backend_is_private gauge
ds_backend_is_private{backend="rootUser",type="local",} 1.0
# HELP ds_backend_entry_count Number of subordinate entries of the base DN, including the base DN
# TYPE ds_backend_entry_count gauge
ds_backend_entry_count{backend="schema",base_dn="cn=schema",type="local",} 1.0
# HELP ds_backend_is_private Whether the base DNs of this backend should be considered public or private
# TYPE ds_backend_is_private gauge
ds_backend_is_private{backend="schema",type="local",} 1.0
# HELP ds_backend_entry_count Number of subordinate entries of the base DN, including the base DN

This also appears around line 45:

# HELP ds_backend_entry_count Number of subordinate entries of the base DN, including the base DN
# TYPE ds_backend_entry_count gauge
ds_backend_entry_count{backend="userRoot",base_dn="dc=movies,dc=tv",type="db",} 0.0

[davidnewhall]

Best I can tell from searching the web is that this is a bug in the OpenDJ output. That's a bummer since I have no control over that.

[rafaelmagu]

This appears to be an issue with missing newline endings on the output. I ran into the same thing on a different endpoint.

[Cenness]

@davidnewhall hey David, which version of opendj were you running? I'm tinkering with latest 4.7.0 and it doesn't have prometheus option in http endpoints