fix: improve AWS credential handling in Bedrock provider, make keyring optional (#1886)

crates/goose/src/providers/bedrock.rs

@@ -1,8 +1,12 @@
+use std::collections::HashMap;
+
 use anyhow::Result;
 use async_trait::async_trait;
+use aws_sdk_bedrockruntime::config::ProvideCredentials;
 use aws_sdk_bedrockruntime::operation::converse::ConverseError;
 use aws_sdk_bedrockruntime::{types as bedrock, Client};
 use mcp_core::Tool;
+use serde_json::Value;
 
 use super::base::{ConfigKey, Provider, ProviderMetadata, ProviderUsage};
 use super::errors::ProviderError;
@@ -34,12 +38,30 @@ pub struct BedrockProvider {
 impl BedrockProvider {
     pub fn from_env(model: ModelConfig) -> Result<Self> {
         let config = crate::config::Config::global();
-        for (key, value) in config.load_secrets()?.iter() {
-            if key.starts_with("AWS_") && value.is_string() {
-                std::env::set_var(key, value.as_str().unwrap());
+
+        // Attempt to load config and secrets to get AWS_ prefixed keys
+        // to re-export them into the environment for aws_config::load_from_env()
+        let set_aws_env_vars = |res: Result<HashMap<String, Value>, _>| {
+            if let Ok(map) = res {
+                map.into_iter()
+                    .filter(|(key, _)| key.starts_with("AWS_"))
+                    .filter_map(|(key, value)| value.as_str().map(|s| (key, s.to_string())))
+                    .for_each(|(key, s)| std::env::set_var(key, s));
             }
-        }
+        };
+
+        set_aws_env_vars(config.load_values());
+        set_aws_env_vars(config.load_secrets());
+
         let sdk_config = futures::executor::block_on(aws_config::load_from_env());
+
+        // validate credentials or return error back up
+        futures::executor::block_on(
+            sdk_config
+                .credentials_provider()
+                .unwrap()
+                .provide_credentials(),
+        )?;
         let client = Client::new(&sdk_config);
 
         Ok(Self { client, model })
@@ -63,7 +85,7 @@ impl Provider for BedrockProvider {
             BEDROCK_DEFAULT_MODEL,
             BEDROCK_KNOWN_MODELS.iter().map(|s| s.to_string()).collect(),
             BEDROCK_DOC_LINK,
-            vec![ConfigKey::new("AWS_PROFILE", true, false, Some("us-west-2"))],
+            vec![ConfigKey::new("AWS_PROFILE", true, false, Some("default"))],
         )
     }