Copilot commented on code in PR #6055:
URL: https://github.com/apache/shenyu/pull/6055#discussion_r2212681534
##########
shenyu-plugin/shenyu-plugin-ai/shenyu-plugin-ai-token-limiter/src/main/java/org/apache/shenyu/plugin/ai/token/limiter/AiTokenLimiterPlugin.java:
##########
@@ -228,42 +242,78 @@ private Flux<? extends DataBuffer> appendResponse(final
Publisher<? extends Data
byte[] inBytes = new byte[ro.remaining()];
ro.get(inBytes);
+ byte[] processedBytes;
if (isGzip) {
int offset = 0;
- int len = inBytes.length;
- if (!headerSkipped.get()) {
+ if (!headerSkipped.getAndSet(true)) {
offset = skipGzipHeader(inBytes);
- headerSkipped.set(true);
}
- inflater.setInput(inBytes, offset, len -
offset);
+ inflater.setInput(inBytes, offset,
inBytes.length - offset);
+ ByteArrayOutputStream baos = new
ByteArrayOutputStream();
try {
int cnt;
while ((cnt =
inflater.inflate(outBuf)) > 0) {
-
writer.write(ByteBuffer.wrap(outBuf, 0, cnt));
+ baos.write(outBuf, 0, cnt);
}
} catch (DataFormatException ex) {
- LOG.error("inflater decompression
failed", ex);
+ LOG.error("Inflater decompression
failed", ex);
}
+ processedBytes = baos.toByteArray();
} else {
- writer.write(ro);
+ processedBytes = inBytes;
+ }
+ String chunk = new String(processedBytes,
StandardCharsets.UTF_8);
+ for (String line : chunk.split("\\r?\\n")) {
+ if (!line.startsWith("data:")) {
+ continue;
+ }
+ String payload =
line.substring("data:".length()).trim();
+ if (payload.isEmpty() ||
"[DONE]".equals(payload)) {
+ continue;
+ }
+ if (!payload.startsWith("{")) {
+ continue;
+ }
+ try {
+ JsonNode node =
MAPPER.readTree(payload);
+ JsonNode usage =
node.get(Constants.USAGE);
+ if (Objects.nonNull(usage) &&
usage.has(Constants.COMPLETION_TOKENS)) {
+ long c =
usage.get(Constants.COMPLETION_TOKENS).asLong();
+ tokensRecorder.accept(c);
+ streamingUsageRecorded.set(true);
+ }
+ } catch (Exception e) {
+ LOG.error("parse ai resp error", e);
+ }
}
+ writer.write(ByteBuffer.wrap(processedBytes));
});
} catch (Exception e) {
LOG.error("read dataBuffer error", e);
}
})
.doFinally(signal -> {
- // release inflater
if (Objects.nonNull(inflater)) {
inflater.end();
}
- String responseBody = writer.output();
- AiModel aiModel =
exchange.getAttribute(Constants.AI_MODEL);
- long tokens =
Objects.requireNonNull(aiModel).getCompletionTokens(responseBody);
- tokensRecorder.accept(tokens);
+ if (!streamingUsageRecorded.get()) {
+ String sse = writer.output();
+ long usageTokens = extractUsageTokensFromSse(sse);
+ tokensRecorder.accept(usageTokens);
+ }
});
}
+ private long extractUsageTokensFromSse(final String sse) {
+ Pattern p =
Pattern.compile("\"completion_tokens\"\\s*:\\s*(\\d+)");
+ Matcher m = p.matcher(sse);
Review Comment:
The regex pattern is compiled on every method call. Consider making the
Pattern a static final field to improve performance.
```suggestion
private static final Pattern COMPLETION_TOKENS_PATTERN =
Pattern.compile("\"completion_tokens\"\\s*:\\s*(\\d+)");
private long extractUsageTokensFromSse(final String sse) {
Matcher m = COMPLETION_TOKENS_PATTERN.matcher(sse);
```
##########
shenyu-plugin/shenyu-plugin-ai/shenyu-plugin-ai-token-limiter/src/main/java/org/apache/shenyu/plugin/ai/token/limiter/AiTokenLimiterPlugin.java:
##########
@@ -228,42 +242,78 @@ private Flux<? extends DataBuffer> appendResponse(final
Publisher<? extends Data
byte[] inBytes = new byte[ro.remaining()];
ro.get(inBytes);
+ byte[] processedBytes;
if (isGzip) {
int offset = 0;
- int len = inBytes.length;
- if (!headerSkipped.get()) {
+ if (!headerSkipped.getAndSet(true)) {
offset = skipGzipHeader(inBytes);
- headerSkipped.set(true);
}
- inflater.setInput(inBytes, offset, len -
offset);
+ inflater.setInput(inBytes, offset,
inBytes.length - offset);
+ ByteArrayOutputStream baos = new
ByteArrayOutputStream();
try {
int cnt;
while ((cnt =
inflater.inflate(outBuf)) > 0) {
-
writer.write(ByteBuffer.wrap(outBuf, 0, cnt));
+ baos.write(outBuf, 0, cnt);
}
} catch (DataFormatException ex) {
- LOG.error("inflater decompression
failed", ex);
+ LOG.error("Inflater decompression
failed", ex);
}
+ processedBytes = baos.toByteArray();
} else {
- writer.write(ro);
+ processedBytes = inBytes;
+ }
+ String chunk = new String(processedBytes,
StandardCharsets.UTF_8);
+ for (String line : chunk.split("\\r?\\n")) {
+ if (!line.startsWith("data:")) {
+ continue;
+ }
+ String payload =
line.substring("data:".length()).trim();
+ if (payload.isEmpty() ||
"[DONE]".equals(payload)) {
+ continue;
+ }
+ if (!payload.startsWith("{")) {
+ continue;
+ }
+ try {
+ JsonNode node =
MAPPER.readTree(payload);
+ JsonNode usage =
node.get(Constants.USAGE);
+ if (Objects.nonNull(usage) &&
usage.has(Constants.COMPLETION_TOKENS)) {
+ long c =
usage.get(Constants.COMPLETION_TOKENS).asLong();
+ tokensRecorder.accept(c);
+ streamingUsageRecorded.set(true);
+ }
+ } catch (Exception e) {
+ LOG.error("parse ai resp error", e);
+ }
}
+ writer.write(ByteBuffer.wrap(processedBytes));
});
} catch (Exception e) {
LOG.error("read dataBuffer error", e);
Review Comment:
Catching generic Exception is too broad. Consider catching specific
exceptions like JsonProcessingException or IOException to handle different
error scenarios appropriately.
```suggestion
} catch (JsonProcessingException e) {
LOG.error("JSON processing error
while parsing AI response", e);
} catch (IOException e) {
LOG.error("IO error while parsing AI
response", e);
}
}
writer.write(ByteBuffer.wrap(processedBytes));
});
} catch (IOException e) {
LOG.error("IO error while reading dataBuffer",
e);
```
##########
shenyu-plugin/shenyu-plugin-ai/shenyu-plugin-ai-token-limiter/src/main/java/org/apache/shenyu/plugin/ai/token/limiter/AiTokenLimiterPlugin.java:
##########
@@ -228,42 +242,78 @@ private Flux<? extends DataBuffer> appendResponse(final
Publisher<? extends Data
byte[] inBytes = new byte[ro.remaining()];
ro.get(inBytes);
+ byte[] processedBytes;
if (isGzip) {
int offset = 0;
- int len = inBytes.length;
- if (!headerSkipped.get()) {
+ if (!headerSkipped.getAndSet(true)) {
offset = skipGzipHeader(inBytes);
- headerSkipped.set(true);
}
- inflater.setInput(inBytes, offset, len -
offset);
+ inflater.setInput(inBytes, offset,
inBytes.length - offset);
+ ByteArrayOutputStream baos = new
ByteArrayOutputStream();
try {
int cnt;
while ((cnt =
inflater.inflate(outBuf)) > 0) {
-
writer.write(ByteBuffer.wrap(outBuf, 0, cnt));
+ baos.write(outBuf, 0, cnt);
}
} catch (DataFormatException ex) {
- LOG.error("inflater decompression
failed", ex);
+ LOG.error("Inflater decompression
failed", ex);
}
+ processedBytes = baos.toByteArray();
} else {
- writer.write(ro);
+ processedBytes = inBytes;
+ }
+ String chunk = new String(processedBytes,
StandardCharsets.UTF_8);
+ for (String line : chunk.split("\\r?\\n")) {
+ if (!line.startsWith("data:")) {
+ continue;
+ }
+ String payload =
line.substring("data:".length()).trim();
+ if (payload.isEmpty() ||
"[DONE]".equals(payload)) {
+ continue;
+ }
+ if (!payload.startsWith("{")) {
+ continue;
+ }
+ try {
+ JsonNode node =
MAPPER.readTree(payload);
+ JsonNode usage =
node.get(Constants.USAGE);
+ if (Objects.nonNull(usage) &&
usage.has(Constants.COMPLETION_TOKENS)) {
+ long c =
usage.get(Constants.COMPLETION_TOKENS).asLong();
+ tokensRecorder.accept(c);
+ streamingUsageRecorded.set(true);
+ }
+ } catch (Exception e) {
+ LOG.error("parse ai resp error", e);
Review Comment:
The error message 'parse ai resp error' is unclear and uses abbreviations.
Consider a more descriptive message like 'Failed to parse AI response JSON
payload'.
```suggestion
LOG.error("Failed to parse AI
response JSON payload", e);
```
##########
shenyu-plugin/shenyu-plugin-ai/shenyu-plugin-ai-token-limiter/src/main/java/org/apache/shenyu/plugin/ai/token/limiter/AiTokenLimiterPlugin.java:
##########
@@ -228,42 +242,78 @@ private Flux<? extends DataBuffer> appendResponse(final
Publisher<? extends Data
byte[] inBytes = new byte[ro.remaining()];
ro.get(inBytes);
+ byte[] processedBytes;
if (isGzip) {
int offset = 0;
- int len = inBytes.length;
- if (!headerSkipped.get()) {
+ if (!headerSkipped.getAndSet(true)) {
Review Comment:
Using getAndSet(true) in a conditional check can lead to race conditions.
Consider using a more explicit atomic operation or synchronization mechanism to
ensure thread safety.
```suggestion
if (headerSkipped.compareAndSet(false,
true)) {
```
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