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fix(nats sink): fix vector exiting if nats sink url fails dns resolution or is unavailable without --require-healthy #23167

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fix(nats sink): fix vector exiting if nats sink url fails dns resolution or is unavailable without --require-healthy #23167

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eddf050
fix: retry reconnecting to nats server. don't retry in healthchecks
rdwr-tomers May 28, 2025
008a2a7
Merge branch 'vectordotdev:master' into sinks-nats-healthchecks
rdwr-tomers Jun 5, 2025
47f7cae
Merge branch 'vectordotdev:master' into sinks-nats-healthchecks
rdwr-tomers Jun 8, 2025
c817b60
added changelog
rdwr-tomers Jun 8, 2025
43ea180
fix: renamed changelog fragment
rdwr-tomers Jun 8, 2025
6e86adb
added author to changelog
rdwr-tomers Jun 8, 2025
dd41aeb
fix: pass options to connect instead of with_retry bool
rdwr-tomers Jun 11, 2025
e744452
Merge branch 'vectordotdev:master' into sinks-nats-healthchecks
rdwr-tomers Jun 11, 2025
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3 changes: 3 additions & 0 deletions changelog.d/22914_fix_nats_sink_ignored_healthcheck.fix.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
Fixed crash if nats sink url is unresolvable or unavailable even when --require-healthy is not set.
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Suggested change
Fixed crash if nats sink url is unresolvable or unavailable even when --require-healthy is not set.
The `nats` sink now does not return an error when an unresolvable or unavailable URL is provided. Note that if `--require-healthy` is set then Vector will stop on startup.


authors: rdwr-tomers
16 changes: 12 additions & 4 deletions src/sinks/nats/config.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -138,8 +138,12 @@ impl std::convert::TryFrom<&NatsSinkConfig> for async_nats::ConnectOptions {
}

impl NatsSinkConfig {
pub(super) async fn connect(&self) -> Result<async_nats::Client, NatsError> {
let options: async_nats::ConnectOptions = self.try_into().context(ConfigSnafu)?;
pub(super) async fn connect(&self, with_retry: bool) -> Result<async_nats::Client, NatsError> {
let mut options: async_nats::ConnectOptions = self.try_into().context(ConfigSnafu)?;
options = match with_retry {
false => options,
true => options.retry_on_initial_connect(),
};

let urls = self.parse_server_addresses()?;
options.connect(urls).await.context(ConnectSnafu)
Expand All @@ -158,7 +162,7 @@ impl NatsSinkConfig {
}

pub(super) async fn publisher(&self) -> Result<NatsPublisher, NatsError> {
let connection = self.connect().await?;
let connection = self.connect(true).await?;

if self.jetstream {
Ok(NatsPublisher::JetStream(async_nats::jetstream::new(
Expand All @@ -171,7 +175,11 @@ impl NatsSinkConfig {
}

async fn healthcheck(config: NatsSinkConfig) -> crate::Result<()> {
config.connect().map_ok(|_| ()).map_err(|e| e.into()).await
config
.connect(false)
.map_ok(|_| ())
.map_err(|e| e.into())
.await
}

pub enum NatsPublisher {
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2 changes: 1 addition & 1 deletion src/sinks/nats/integration_tests.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,7 @@ async fn publish_and_check(conf: NatsSinkConfig) -> Result<(), NatsError> {
let subject = conf.subject.clone();
let consumer = conf
.clone()
.connect()
.connect(false)
.await
.expect("failed to connect with test consumer");
let mut sub = consumer
Expand Down
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