feat: support customizing gemini safeSettings (#375)

2 files changed, 30 insertions, 17 deletions

diff --git a/src/client/gemini.rs b/src/client/gemini.rs
index 60c1e3b..39371fd 100644
--- a/src/client/gemini.rs
+++ b/src/client/gemini.rs
@@ -23,6 +23,7 @@ const TOKENS_COUNT_FACTORS: TokensCountFactors = (5, 2);
 pub struct GeminiConfig {
     pub name: Option<String>,
     pub api_key: Option<String>,
+    pub block_threshold: Option<String>,
     pub extra: Option<ExtraConfig>,
 }
 
@@ -73,7 +74,9 @@ impl GeminiClient {
             false => "generateContent",
         };
 
-        let body = build_body(data, self.model.name.clone())?;
+        let block_threshold = self.config.block_threshold.clone();
+
+        let body = build_body(data, self.model.name.clone(), block_threshold)?;
 
         let model = self.model.name.clone();
 
diff --git a/src/client/vertexai.rs b/src/client/vertexai.rs
index ba43796..80e58e7 100644
--- a/src/client/vertexai.rs
+++ b/src/client/vertexai.rs
@@ -14,13 +14,13 @@ use serde::Deserialize;
 use serde_json::{json, Value};
 use std::path::PathBuf;
 
-const MODELS: [(&str, usize, &str); 2] = [
+const MODELS: [(&str, usize, &str); 5] = [
     // https://cloud.google.com/vertex-ai/generative-ai/docs/learn/models
     ("gemini-1.0-pro", 24568, "text"),
     ("gemini-1.0-pro-vision", 14336, "text,vision"),
-    // ("gemini-1.0-ultra", 8192, "text"),
-    // ("gemini-1.0-ultra-vision", 8192, "text,vision"),
-    // ("gemini-1.5-pro", 1000000, "text"),
+    ("gemini-1.0-ultra", 8192, "text"),
+    ("gemini-1.0-ultra-vision", 8192, "text,vision"),
+    ("gemini-1.5-pro", 1000000, "text"),
 ];
 
 const TOKENS_COUNT_FACTORS: TokensCountFactors = (5, 2);
@@ -32,6 +32,7 @@ pub struct VertexAIConfig {
     pub name: Option<String>,
     pub api_base: Option<String>,
     pub adc_file: Option<String>,
+    pub block_threshold: Option<String>,
     pub extra: Option<ExtraConfig>,
 }
 
@@ -84,7 +85,9 @@ impl VertexAIClient {
             false => "generateContent",
         };
 
-        let body = build_body(data, self.model.name.clone())?;
+        let block_threshold = self.config.block_threshold.clone();
+
+        let body = build_body(data, self.model.name.clone(), block_threshold)?;
 
         let model = self.model.name.clone();
 
@@ -106,7 +109,9 @@ impl VertexAIClient {
             let (token, expires_in) = fetch_access_token(&client, &self.config.adc_file)
                 .await
                 .with_context(|| "Failed to fetch access token")?;
-            let expires_at = Utc::now() + Duration::try_seconds(expires_in).ok_or_else(|| anyhow!("Failed to parse expires_in of access_token"))?;
+            let expires_at = Utc::now()
+                + Duration::try_seconds(expires_in)
+                    .ok_or_else(|| anyhow!("Failed to parse expires_in of access_token"))?;
             unsafe { ACCESS_TOKEN = (token, expires_at.timestamp()) };
         }
         Ok(())
@@ -208,7 +213,11 @@ fn check_error(data: &Value) -> Result<()> {
     }
 }
 
-pub(crate) fn build_body(data: SendData, _model: String) -> Result<Value> {
+pub(crate) fn build_body(
+    data: SendData,
+    _model: String,
+    block_threshold: Option<String>,
+) -> Result<Value> {
     let SendData {
         mut messages,
         temperature,
@@ -258,15 +267,16 @@ pub(crate) fn build_body(data: SendData, _model: String) -> Result<Value> {
         );
     }
 
-    let mut body = json!({
-        "contents": contents,
-        "safetySettings":[
-            {"category":"HARM_CATEGORY_HARASSMENT","threshold":"BLOCK_ONLY_HIGH"},
-            {"category":"HARM_CATEGORY_HATE_SPEECH","threshold":"BLOCK_ONLY_HIGH"},
-            {"category":"HARM_CATEGORY_SEXUALLY_EXPLICIT","threshold":"BLOCK_ONLY_HIGH"},
-            {"category":"HARM_CATEGORY_DANGEROUS_CONTENT","threshold":"BLOCK_ONLY_HIGH"}
-        ]
-    });
+    let mut body = json!({ "contents": contents });
+
+    if let Some(block_threshold) = block_threshold {
+        body["safetySettings"] = json!([
+            {"category":"HARM_CATEGORY_HARASSMENT","threshold":block_threshold},
+            {"category":"HARM_CATEGORY_HATE_SPEECH","threshold":block_threshold},
+            {"category":"HARM_CATEGORY_SEXUALLY_EXPLICIT","threshold":block_threshold},
+            {"category":"HARM_CATEGORY_DANGEROUS_CONTENT","threshold":block_threshold}
+        ]);
+    }
 
     if let Some(temperature) = temperature {
         body["generationConfig"] = json!({