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import com.touchsmail.util.StringUtils;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.*;
import org.springframework.http.ResponseEntity;
import org.springframework.format.annotation.DateTimeFormat;
import java.io.*;
import java.nio.charset.StandardCharsets;
import java.nio.file.*;
import java.util.*;
import java.time.*;
import java.time.format.*;
import javax.annotation.Resource;
@RestController
@RequestMapping("/service/logs")
public class SystemLogController {
private static final DateTimeFormatter DATE_FORMAT = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
@Resource
private LogReaderProperties properties;
private HttpHeaders getHeaders() {
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.TEXT_PLAIN);
headers.set(HttpHeaders.CONTENT_ENCODING, "UTF-8");
headers.set(HttpHeaders.CONTENT_TYPE, "text/plain;charset=UTF-8");
return headers;
}
private void checkEnabled() {
if (!properties.isEnabled()) {
throw new IllegalStateException("log not open!");
}
}
private void checkFileExists() {
if (StringUtils.isBlank(properties.getFilePath()) || !Files.exists(Paths.get(properties.getFilePath()))) {
throw new IllegalStateException("log file does not exist!");
}
}
@GetMapping("/")
public ResponseEntity<String> explain() {
checkEnabled();
checkFileExists();
final String content = "// 读取全部日志\n" +
"GET http://localhost:6001/service/logs/all\n" +
"\n" +
"// 读取最新10条日志\n" +
"GET http://localhost:6001/service/logs/latest?lines=10\n" +
"\n" +
"// 读取指定时间范围的日志\n" +
"GET http://localhost:6001/service/logs/time?startTime=2024-12-01 00:00:00&endTime=2024-12-31 00:00:00\n" +
"\n" +
"// 流式读取日志\n" +
"GET http://localhost:6001/service/logs/stream?bufferSize=100";
return new ResponseEntity<>(content, getHeaders(), HttpStatus.OK);
}
@GetMapping("/all")
public ResponseEntity<String> readAllLogs() {
checkEnabled();
checkFileExists();
try {
String content = new String(Files.readAllBytes(Paths.get(properties.getFilePath())), StandardCharsets.UTF_8);
return new ResponseEntity<>(content, getHeaders(), HttpStatus.OK);
} catch (IOException e) {
return new ResponseEntity<>("读取日志文件失败: " + e.getMessage(), getHeaders(), HttpStatus.INTERNAL_SERVER_ERROR);
}
}
@GetMapping("/latest")
public ResponseEntity<String> readLatestLogs(@RequestParam(defaultValue = "10") int lines) {
try {
List<String> allLines = Files.readAllLines(Paths.get(properties.getFilePath()), StandardCharsets.UTF_8);
int startIndex = Math.max(0, allLines.size() - lines);
List<String> latestLines = allLines.subList(startIndex, allLines.size());
StringBuilder result = new StringBuilder();
for (String line : latestLines) {
result.append(line).append("\n");
}
return new ResponseEntity<>(result.toString(), getHeaders(), HttpStatus.OK);
} catch (IOException e) {
return new ResponseEntity<>("读取日志文件失败: " + e.getMessage(), getHeaders(), HttpStatus.INTERNAL_SERVER_ERROR);
}
}
@GetMapping("/time")
public ResponseEntity<String> readLogsByTimeRange(
@RequestParam @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") LocalDateTime startTime,
@RequestParam @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") LocalDateTime endTime) {
try {
List<String> allLines = Files.readAllLines(Paths.get(properties.getFilePath()), StandardCharsets.UTF_8);
StringBuilder result = new StringBuilder();
for (String line : allLines) {
try {
String timeStr = line.substring(0, 19);
LocalDateTime logTime = LocalDateTime.parse(timeStr, DATE_FORMAT);
if ((logTime.isEqual(startTime) || logTime.isAfter(startTime)) &&
(logTime.isEqual(endTime) || logTime.isBefore(endTime))) {
result.append(line).append("\n");
}
} catch (Exception e) {
continue;
}
}
return new ResponseEntity<>(result.toString(), getHeaders(), HttpStatus.OK);
} catch (IOException e) {
return new ResponseEntity<>("读取日志文件失败: " + e.getMessage(), getHeaders(), HttpStatus.INTERNAL_SERVER_ERROR);
}
}
@GetMapping("/stream")
public ResponseEntity<String> streamLog(@RequestParam(defaultValue = "100") int maxLines) {
try {
List<String> lines = new ArrayList<>();
try (BufferedReader reader = new BufferedReader(
new InputStreamReader(new FileInputStream(properties.getFilePath()), StandardCharsets.UTF_8))) {
String line;
while ((line = reader.readLine()) != null) {
lines.add(line);
if (lines.size() > maxLines) {
lines.remove(0);
}
}
}
StringBuilder result = new StringBuilder();
for (String line : lines) {
result.append(line).append("\n");
}
return new ResponseEntity<>(result.toString(), getHeaders(), HttpStatus.OK);
} catch (IOException e) {
return new ResponseEntity<>("读取日志文件失败: " + e.getMessage(), getHeaders(), HttpStatus.INTERNAL_SERVER_ERROR);
}
}
}
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