Remove unused extract_tool_args_from_events functions (#28038)

This PR removes the unused `extract_tool_args_from_events` functions
that were defined in some of the LLM provider crates.

Release Notes:

- N/A

crates/anthropic/src/anthropic.rs

@@ -1,10 +1,10 @@
 mod supported_countries;
 
-use std::{pin::Pin, str::FromStr};
+use std::str::FromStr;
 
 use anyhow::{Context as _, Result, anyhow};
 use chrono::{DateTime, Utc};
-use futures::{AsyncBufReadExt, AsyncReadExt, Stream, StreamExt, io::BufReader, stream::BoxStream};
+use futures::{AsyncBufReadExt, AsyncReadExt, StreamExt, io::BufReader, stream::BoxStream};
 use http_client::http::{HeaderMap, HeaderValue};
 use http_client::{AsyncBody, HttpClient, Method, Request as HttpRequest};
 use serde::{Deserialize, Serialize};
@@ -437,50 +437,6 @@ pub async fn stream_completion_with_rate_limit_info(
     }
 }
 
-pub async fn extract_tool_args_from_events(
-    tool_name: String,
-    mut events: Pin<Box<dyn Send + Stream<Item = Result<Event>>>>,
-) -> Result<impl Send + Stream<Item = Result<String>>> {
-    let mut tool_use_index = None;
-    while let Some(event) = events.next().await {
-        if let Event::ContentBlockStart {
-            index,
-            content_block: ResponseContent::ToolUse { name, .. },
-        } = event?
-        {
-            if name == tool_name {
-                tool_use_index = Some(index);
-                break;
-            }
-        }
-    }
-
-    let Some(tool_use_index) = tool_use_index else {
-        return Err(anyhow!("tool not used"));
-    };
-
-    Ok(events.filter_map(move |event| {
-        let result = match event {
-            Err(error) => Some(Err(error)),
-            Ok(Event::ContentBlockDelta { index, delta }) => match delta {
-                ContentDelta::TextDelta { .. } => None,
-                ContentDelta::ThinkingDelta { .. } => None,
-                ContentDelta::SignatureDelta { .. } => None,
-                ContentDelta::InputJsonDelta { partial_json } => {
-                    if index == tool_use_index {
-                        Some(Ok(partial_json))
-                    } else {
-                        None
-                    }
-                }
-            },
-            _ => None,
-        };
-
-        async move { result }
-    }))
-}
-
 #[derive(Debug, Serialize, Deserialize, Copy, Clone)]
 #[serde(rename_all = "lowercase")]
 pub enum CacheControlType {

crates/language_models/src/provider/bedrock.rs

@@ -8,9 +8,7 @@ use aws_config::Region;
 use aws_config::stalled_stream_protection::StalledStreamProtectionConfig;
 use aws_credential_types::Credentials;
 use aws_http_client::AwsHttpClient;
-use bedrock::bedrock_client::types::{
-    ContentBlockDelta, ContentBlockStart, ContentBlockStartEvent, ConverseStreamOutput,
-};
+use bedrock::bedrock_client::types::{ContentBlockDelta, ContentBlockStart, ConverseStreamOutput};
 use bedrock::bedrock_client::{self, Config};
 use bedrock::{BedrockError, BedrockInnerContent, BedrockMessage, BedrockStreamingResponse, Model};
 use collections::{BTreeMap, HashMap};
@@ -544,70 +542,6 @@ pub fn get_bedrock_tokens(
         .boxed()
 }
 
-pub async fn extract_tool_args_from_events(
-    name: String,
-    mut events: Pin<Box<dyn Send + Stream<Item = Result<BedrockStreamingResponse, BedrockError>>>>,
-    handle: Handle,
-) -> Result<impl Send + Stream<Item = Result<String>>> {
-    handle
-        .spawn(async move {
-            let mut tool_use_index = None;
-            while let Some(event) = events.next().await {
-                if let BedrockStreamingResponse::ContentBlockStart(ContentBlockStartEvent {
-                    content_block_index,
-                    start,
-                    ..
-                }) = event?
-                {
-                    match start {
-                        None => {
-                            continue;
-                        }
-                        Some(start) => match start.as_tool_use() {
-                            Ok(tool_use) => {
-                                if name == tool_use.name {
-                                    tool_use_index = Some(content_block_index);
-                                    break;
-                                }
-                            }
-                            Err(err) => {
-                                return Err(anyhow!("Failed to parse tool use event: {:?}", err));
-                            }
-                        },
-                    }
-                }
-            }
-
-            let Some(tool_use_index) = tool_use_index else {
-                return Err(anyhow!("Tool is not used"));
-            };
-
-            Ok(events.filter_map(move |event| {
-                let result = match event {
-                    Err(_err) => None,
-                    Ok(output) => match output.clone() {
-                        BedrockStreamingResponse::ContentBlockDelta(inner) => {
-                            match inner.clone().delta {
-                                Some(ContentBlockDelta::ToolUse(tool_use)) => {
-                                    if inner.content_block_index == tool_use_index {
-                                        Some(Ok(tool_use.input))
-                                    } else {
-                                        None
-                                    }
-                                }
-                                _ => None,
-                            }
-                        }
-                        _ => None,
-                    },
-                };
-
-                async move { result }
-            }))
-        })
-        .await?
-}
-
 pub fn map_to_language_model_completion_events(
     events: Pin<Box<dyn Send + Stream<Item = Result<BedrockStreamingResponse, BedrockError>>>>,
     handle: Handle,

crates/open_ai/src/open_ai.rs

@@ -12,7 +12,6 @@ use serde_json::Value;
 use std::{
     convert::TryFrom,
     future::{self, Future},
-    pin::Pin,
 };
 use strum::EnumIter;
 
@@ -620,57 +619,6 @@ pub fn embed<'a>(
     }
 }
 
-pub async fn extract_tool_args_from_events(
-    tool_name: String,
-    mut events: Pin<Box<dyn Send + Stream<Item = Result<ResponseStreamEvent>>>>,
-) -> Result<impl Send + Stream<Item = Result<String>>> {
-    let mut tool_use_index = None;
-    let mut first_chunk = None;
-    while let Some(event) = events.next().await {
-        let call = event?.choices.into_iter().find_map(|choice| {
-            choice.delta.tool_calls?.into_iter().find_map(|call| {
-                if call.function.as_ref()?.name.as_deref()? == tool_name {
-                    Some(call)
-                } else {
-                    None
-                }
-            })
-        });
-        if let Some(call) = call {
-            tool_use_index = Some(call.index);
-            first_chunk = call.function.and_then(|func| func.arguments);
-            break;
-        }
-    }
-
-    let Some(tool_use_index) = tool_use_index else {
-        return Err(anyhow!("tool not used"));
-    };
-
-    Ok(events.filter_map(move |event| {
-        let result = match event {
-            Err(error) => Some(Err(error)),
-            Ok(ResponseStreamEvent { choices, .. }) => choices.into_iter().find_map(|choice| {
-                choice.delta.tool_calls?.into_iter().find_map(|call| {
-                    if call.index == tool_use_index {
-                        let func = call.function?;
-                        let mut arguments = func.arguments?;
-                        if let Some(mut first_chunk) = first_chunk.take() {
-                            first_chunk.push_str(&arguments);
-                            arguments = first_chunk
-                        }
-                        Some(Ok(arguments))
-                    } else {
-                        None
-                    }
-                })
-            }),
-        };
-
-        async move { result }
-    }))
-}
-
 pub fn extract_text_from_events(
     response: impl Stream<Item = Result<ResponseStreamEvent>>,
 ) -> impl Stream<Item = Result<String>> {