Skip to content

fix(core):prevent openAIConversationMerger merge history message with MessageRole #737

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
AlbumenJ merged 9 commits into from
Feb 10, 2026
+720 −45
Merged

fix(core):prevent openAIConversationMerger merge history message with MessageRole #737

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
9 commits
Select commit Hold shift + click to select a range
ea80a07
fix(core):prevent openAIConversationMerger merge history message with…
feelshana Feb 5, 2026
4c5af9e
fix(core):prevent openAIConversationMerger merge history message with…
feelshana Feb 5, 2026
8ade7d1
Merge branch 'agentscope-ai:main' into dev-1.0.1
feelshana Feb 5, 2026
1ffeb48
Merge branch 'dev-1.0.1' of https://github.com/feelshana/agentscope-j…
feelshana Feb 5, 2026
5f4cced
fix(core):prevent openAIConversationMerger merge history message with…
feelshana Feb 5, 2026
4791e12
fix(core):prevent openAIConversationMerger merge history message with…
feelshana Feb 5, 2026
5d385fa
fix(core):prevent openAIConversationMerger merge history message with…
feelshana Feb 6, 2026
718729f
fix(core):prevent openAIConversationMerger merge history message with…
feelshana Feb 6, 2026
be77fe1
Merge branch 'main' into dev-1.0.1
feelshana Feb 6, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
78 changes: 33 additions & 45 deletions ...cope-core/src/main/java/io/agentscope/core/formatter/openai/OpenAIConversationMerger.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -35,11 +35,11 @@
import org.slf4j.LoggerFactory;

/**
* Merges multi-agent conversation messages for OpenAI HTTP API.
* Consolidates multiple agent messages into single user messages with history tags.
* Merges multi-agent conversation messages for OpenAI HTTP API. Consolidates multiple agent
* messages into single user messages with history tags.
*
* <p>This class combines all agent messages into a single user message with conversation
* history wrapped in special tags. Images and audio are preserved as separate ContentParts.
* <p>This class combines all agent messages into a single user message with conversation history
* wrapped in special tags. Images and audio are preserved as separate ContentParts.
*/
public class OpenAIConversationMerger {

Expand Down Expand Up @@ -132,10 +132,6 @@ private void processMessage(
List<OpenAIContentPart> allParts,
boolean includePrefix) {
String agentName = msg.getName();
String roleLabel = roleFormatter.apply(msg);
if (roleLabel == null) {
roleLabel = "Unknown";
}

// Process all blocks
List<ContentBlock> blocks = msg.getContent();
Expand All @@ -145,7 +141,7 @@ private void processMessage(
for (ContentBlock block : blocks) {
if (block instanceof TextBlock tb) {
if (includePrefix) {
appendRoleAndName(textBuffer, roleLabel, agentName);
appendNamePrefix(textBuffer, agentName);
}
textBuffer.append(tb.getText()).append("\n");

Expand All @@ -162,7 +158,7 @@ private void processMessage(
if (source == null) {
log.warn("ImageBlock has null source, skipping");
if (includePrefix) {
appendRoleAndName(textBuffer, roleLabel, agentName);
appendNamePrefix(textBuffer, agentName);
}
textBuffer.append("[Image - null source]\n");
} else {
Expand All @@ -174,7 +170,7 @@ private void processMessage(
e.getMessage() != null ? e.getMessage() : e.getClass().getSimpleName();
log.warn("Failed to process ImageBlock: {}", errorMsg);
if (includePrefix) {
appendRoleAndName(textBuffer, roleLabel, agentName);
appendNamePrefix(textBuffer, agentName);
}
textBuffer
.append("[Image - processing failed: ")
Expand All @@ -195,7 +191,7 @@ private void processMessage(
if (source == null) {
log.warn("VideoBlock has null source, skipping");
if (includePrefix) {
appendRoleAndName(textBuffer, roleLabel, agentName);
appendNamePrefix(textBuffer, agentName);
}
textBuffer.append("[Video - null source]\n");
} else {
Expand All @@ -207,7 +203,7 @@ private void processMessage(
e.getMessage() != null ? e.getMessage() : e.getClass().getSimpleName();
log.warn("Failed to process VideoBlock: {}", errorMsg);
if (includePrefix) {
appendRoleAndName(textBuffer, roleLabel, agentName);
appendNamePrefix(textBuffer, agentName);
}
textBuffer
.append("[Video - processing failed: ")
Expand All @@ -228,15 +224,15 @@ private void processMessage(
if (source == null) {
log.warn("AudioBlock has null source, skipping");
if (includePrefix) {
appendRoleAndName(textBuffer, roleLabel, agentName);
appendNamePrefix(textBuffer, agentName);
}
textBuffer.append("[Audio - null source]\n");
} else if (source instanceof Base64Source b64) {
String audioData = b64.getData();
if (audioData == null || audioData.isEmpty()) {
log.warn("Base64Source has null or empty data, skipping");
if (includePrefix) {
appendRoleAndName(textBuffer, roleLabel, agentName);
appendNamePrefix(textBuffer, agentName);
}
textBuffer.append("[Audio - null or empty data]\n");
} else {
Expand All @@ -248,30 +244,30 @@ private void processMessage(
if (url == null || url.isEmpty()) {
log.warn("URLSource has null or empty URL, skipping");
if (includePrefix) {
appendRoleAndName(textBuffer, roleLabel, agentName);
appendNamePrefix(textBuffer, agentName);
}
textBuffer.append("[Audio - null or empty URL]\n");
} else {
log.warn(
"URL-based audio not directly supported, using text"
+ " reference");
if (includePrefix) {
appendRoleAndName(textBuffer, roleLabel, agentName);
appendNamePrefix(textBuffer, agentName);
}
textBuffer.append("[Audio URL: ").append(url).append("]\n");
}
} else {
log.warn("Unknown audio source type: {}", source.getClass());
if (includePrefix) {
appendRoleAndName(textBuffer, roleLabel, agentName);
appendNamePrefix(textBuffer, agentName);
}
textBuffer.append("[Audio - unsupported source type]\n");
}
} catch (Exception e) {
String errorMsg =
e.getMessage() != null ? e.getMessage() : e.getClass().getSimpleName();
log.warn("Failed to process AudioBlock: {}", errorMsg);
appendRoleAndName(textBuffer, roleLabel, agentName);
appendNamePrefix(textBuffer, agentName);
textBuffer
.append("[Audio - processing failed: ")
.append(errorMsg)
Expand All @@ -281,11 +277,16 @@ private void processMessage(
} else if (block instanceof ThinkingBlock thinkingBlock) {
// Include ThinkingBlock in conversation history for models that support reasoning
if (includePrefix) {
appendRoleAndName(textBuffer, roleLabel, agentName);
}
String thinking = thinkingBlock.getThinking();
if (thinking != null && !thinking.isEmpty()) {
textBuffer.append("[Thinking]: ").append(thinking).append("\n");
appendNamePrefix(textBuffer, agentName);
String thinking = thinkingBlock.getThinking();
if (thinking != null && !thinking.isEmpty()) {
textBuffer.append("[Thinking]: ").append(thinking).append("\n");
}
} else {
String thinking = thinkingBlock.getThinking();
if (thinking != null && !thinking.isEmpty()) {
textBuffer.append("[Thinking]: ").append(thinking).append("\n");
}
}
} else if (block instanceof ToolResultBlock toolResult) {
// Use provided converter to handle multimodal content in tool results
Expand All @@ -295,13 +296,8 @@ private void processMessage(
? resultText
: "[Empty tool result]";

// For tool results, we format slightly differently to include tool name
textBuffer.append(roleLabel);
if (agentName != null
&& !agentName.equals(roleLabel)
&& !agentName.equals("Unknown")) {
textBuffer.append(" ").append(agentName);
}
// For tool results, format as: name (tool_name): result
textBuffer.append(agentName);
textBuffer
.append(" (")
.append(toolResult.getName())
Expand All @@ -312,31 +308,23 @@ private void processMessage(
}
}

private void appendRoleAndName(StringBuilder buffer, String roleLabel, String agentName) {
buffer.append(roleLabel);
if (agentName != null && !agentName.equals(roleLabel) && !agentName.equals("Unknown")) {
buffer.append(" ").append(agentName);
private void appendNamePrefix(StringBuilder buffer, String agentName) {
if (agentName != null && !agentName.isEmpty()) {
buffer.append(agentName).append(": ");
}
buffer.append(": ");
}

/**
* Convert image Source to URL string for OpenAI API.
*/
/** Convert image Source to URL string for OpenAI API. */
private String convertImageSourceToUrl(Source source) {
return OpenAIConverterUtils.convertImageSourceToUrl(source);
}

/**
* Convert video Source to URL string for OpenAI API.
*/
/** Convert video Source to URL string for OpenAI API. */
private String convertVideoSourceToUrl(Source source) {
return OpenAIConverterUtils.convertVideoSourceToUrl(source);
}

/**
* Detect audio format from media type.
*/
/** Detect audio format from media type. */
private String detectAudioFormat(String mediaType) {
return OpenAIConverterUtils.detectAudioFormat(mediaType);
}
Expand Down
Loading
Loading