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remove extraneous parameter from DnsConfigBuilder service-specific helpers #8264

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@iximeow iximeow commented Jun 3, 2025

for the service-specific builder methods, the service name was expected as an argument but its only value was to check it was the same name that builder expected. the Clickhouse-related methods then used other associated names when they would set up multiple records!

the only value of the service_name argument seems to be as defensive programming, but it seems to primarily be a kind of redundant toestubber - if there were a copypaste error this would have caught, we still would likely still catch it. without the service name checks in service-specific helpers, we'd see one service defined as multiple zones on the same sled. this would also error!

(one of the two followups i'd talked with @davepacheco about in #8047)

for the service-specific builder methods, the service name was expected
as an argument but its only value was to check it was the same name that
builder expected. the Clickhouse-related methods then used other names
when they would set up multiple records!

the only value of the `service_name` argument seems to be as defensive
programming, but it seems to primarily be a kind of redundant footgun -
if there were a copypaste error this would have caught, we still would
define a service as multiple zones on the same sled. this would also
error! we would still detect erroneous configurations.
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