chore: force fallback in alpine fips mode

Author: apiarian-datadog

bottlecap/Cargo.toml

@@ -78,3 +78,4 @@ fips = [
     "reqwest/rustls-tls-no-provider",
     "rustls/fips",
 ]
+force_fallback = []

bottlecap/src/config/mod.rs

@@ -209,6 +209,13 @@ fn log_fallback_reason(reason: &str) {
     println!("{{\"DD_EXTENSION_FALLBACK_REASON\":\"{reason}\"}}");
 }
 
+#[cfg(feature = "force_fallback")]
+fn fallback(_figment: &Figment, _yaml_figment: &Figment) -> Result<(), ConfigError> {
+    log_fallback_reason("force_fallback");
+    Err(ConfigError::UnsupportedField("force_fallback".to_string()))
+}
+
+#[cfg(not(feature = "force_fallback"))]
 fn fallback(figment: &Figment, yaml_figment: &Figment) -> Result<(), ConfigError> {
     let (config, yaml_config): (FallbackConfig, FallbackYamlConfig) =
         match (figment.extract(), yaml_figment.extract()) {

images/Dockerfile.bottlecap.alpine.compile

@@ -32,9 +32,11 @@ ENV AWS_LC_FIPS_SYS_CC=clang
 ENV AWS_LC_FIPS_SYS_CXX=clang++
 
 WORKDIR /tmp/dd/bottlecap
+# we can't currently compile successfully in alpine for fips mode, so we force
+# fallback in alpine fips to the go agent.
 RUN --mount=type=cache,target=/root/.cargo/registry \
     if [ "$FIPS" = "1" ]; then \
-        export FEATURES=fips; \
+        export FEATURES="default,force_fallback"; \
     else \
         export FEATURES=default; \
     fi; \