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Add error logging and improve HTTP handling for YouTube transcript fetching

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Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
joungmin
2026-04-09 18:38:23 +00:00
parent 56d5752095
commit db4155c36d
2 changed files with 24 additions and 7 deletions
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12
sundol-backend/src/main/java/com/sundol/controller/KnowledgeController.java
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@@ -3,6 +3,8 @@ package com.sundol.controller;
import com.sundol.dto.IngestRequest; import com.sundol.dto.IngestRequest;
import com.sundol.service.KnowledgeService; import com.sundol.service.KnowledgeService;
import com.sundol.service.YouTubeTranscriptService; import com.sundol.service.YouTubeTranscriptService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus; import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity; import org.springframework.http.ResponseEntity;
import org.springframework.security.core.annotation.AuthenticationPrincipal; import org.springframework.security.core.annotation.AuthenticationPrincipal;
@@ -16,6 +18,8 @@ import java.util.Map;
@RequestMapping("/api/knowledge") @RequestMapping("/api/knowledge")
public class KnowledgeController { public class KnowledgeController {
private static final Logger log = LoggerFactory.getLogger(KnowledgeController.class);
private final KnowledgeService knowledgeService; private final KnowledgeService knowledgeService;
private final YouTubeTranscriptService youTubeTranscriptService; private final YouTubeTranscriptService youTubeTranscriptService;
@@ -50,9 +54,11 @@ public class KnowledgeController {
@RequestParam String url) { @RequestParam String url) {
return Mono.fromCallable(() -> youTubeTranscriptService.fetchTranscript(url)) return Mono.fromCallable(() -> youTubeTranscriptService.fetchTranscript(url))
.map(transcript -> ResponseEntity.ok(Map.<String, Object>of("transcript", transcript))) .map(transcript -> ResponseEntity.ok(Map.<String, Object>of("transcript", transcript)))
.onErrorResume(e -> Mono.just( .onErrorResume(e -> {
ResponseEntity.status(HttpStatus.BAD_REQUEST) log.error("YouTube transcript error: {}", e.getMessage(), e);
.body(Map.of("error", e.getMessage() != null ? e.getMessage() : "트랜스크립트를 가져올 수 없습니다")))); return Mono.just(ResponseEntity.status(HttpStatus.BAD_REQUEST)
.body(Map.of("error", e.getMessage() != null ? e.getMessage() : "트랜스크립트를 가져올 수 없습니다")));
});
} }
@GetMapping("/{id}") @GetMapping("/{id}")

19
sundol-backend/src/main/java/com/sundol/service/YouTubeTranscriptService.java
View File

@@ -156,20 +156,31 @@ public class YouTubeTranscriptService {
log.info("Fetching caption XML from: {}", captionUrl); log.info("Fetching caption XML from: {}", captionUrl);
// 자막 XML 가져오기 // 자막 XML 가져오기
log.info("Attempting to fetch caption XML...");
String xml; String xml;
try { try {
xml = new java.net.URI(captionUrl).toURL().openConnection() var conn = (java.net.HttpURLConnection) new java.net.URI(captionUrl).toURL().openConnection();
.getInputStream().readAllBytes().toString();
// Use simple HTTP fetch
var conn = new java.net.URI(captionUrl).toURL().openConnection();
conn.setRequestProperty("User-Agent", "Mozilla/5.0"); conn.setRequestProperty("User-Agent", "Mozilla/5.0");
conn.setConnectTimeout(15_000);
conn.setReadTimeout(15_000);
int responseCode = conn.getResponseCode();
log.info("Caption XML response code: {}", responseCode);
if (responseCode != 200) {
String errorBody = new String(conn.getErrorStream().readAllBytes(), StandardCharsets.UTF_8);
log.error("Caption XML error response: {}", errorBody);
throw new IOException("자막 XML 응답 코드: " + responseCode);
}
xml = new String(conn.getInputStream().readAllBytes(), StandardCharsets.UTF_8); xml = new String(conn.getInputStream().readAllBytes(), StandardCharsets.UTF_8);
log.info("Caption XML fetched: {} chars", xml.length());
} catch (Exception e) { } catch (Exception e) {
log.error("Failed to fetch caption XML: {}", e.getMessage(), e);
throw new IOException("자막 XML을 가져올 수 없습니다: " + e.getMessage(), e); throw new IOException("자막 XML을 가져올 수 없습니다: " + e.getMessage(), e);
} }
String transcript = parseTranscriptXml(xml); String transcript = parseTranscriptXml(xml);
log.info("Parsed transcript: {} chars (blank={})", transcript.length(), transcript.isBlank());
if (transcript.isBlank()) { if (transcript.isBlank()) {
log.error("Transcript XML content (first 500 chars): {}", xml.substring(0, Math.min(500, xml.length())));
throw new IOException("자막 텍스트를 파싱할 수 없습니다."); throw new IOException("자막 텍스트를 파싱할 수 없습니다.");
} }