retries 0 is not respected

[xkilian]

Host operating system: output of uname -a

Ubuntu 18.04LTS

snmp_exporter version: output of snmp_exporter -version

snmp_exporter 0.19

What device/snmpwalk OID are you using?

N/A

If this is a new device, please link to the MIB(s).

N/A

What did you do that produced an error?

configure a device collection using the option:

retries 0

generate the configuration

What did you expect to see?

retries 0 appear in the generated configuration

What did you see instead?

The line is not placed in the snmp.yml output. Causing it to default to retries: 3.

Clarify the documentation to indicate if retries 0 (no retries) is a supported configuration or not. If it is not, is there a reason for this. Some devices cannot be polled twice in a row without a delay, otherwise the snmp stacks will crash.

[SuperQ]

That is very strange. I did some tests and found that the retries is correctly parsed from the generator.yml when you run generator generate. But the Marshal yaml output skips this value.

It seems to do the same thing for other values like max_repetitions: 0.

This seems to be a bug in the yaml library output. Or possibly the way the walk parameters are inlined in the yaml struct.