75 lines
2.3 KiB
Java
75 lines
2.3 KiB
Java
package eu.dnetlib.functionality.modular.ui;
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import java.io.IOException;
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import java.util.Enumeration;
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import java.util.List;
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import javax.annotation.PostConstruct;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.log4j.Level;
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import org.apache.log4j.LogManager;
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import org.apache.log4j.Logger;
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import org.springframework.stereotype.Controller;
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import org.springframework.web.bind.annotation.PathVariable;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.ResponseBody;
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import eu.dnetlib.functionality.modular.ui.utils.LogLine;
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import eu.dnetlib.functionality.modular.ui.utils.LogUiAppender;
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@Controller
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public class DnetLogAjaxController {
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private LogUiAppender appender;
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private static final Log log = LogFactory.getLog(DnetLogAjaxController.class);
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@PostConstruct
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void init() throws IOException {
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this.appender = findLogUiAppender();
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}
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private LogUiAppender findLogUiAppender() {
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final Logger logger = LogManager.getRootLogger();
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final Enumeration<?> appenders = logger.getAllAppenders();
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while (appenders.hasMoreElements()) {
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final Object app = appenders.nextElement();
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if (app instanceof LogUiAppender) {
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log.info("An istance of LogUiAppender is already registered in log4j configuration.");
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return (LogUiAppender) app;
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}
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}
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final LogUiAppender app = new LogUiAppender();
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LogManager.getRootLogger().addAppender(app);
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log.info("A new LogUiAppender has been registered in log4j configuration.");
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return app;
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}
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@RequestMapping(value = "/ui/log/tail/{n}")
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public @ResponseBody
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List<LogLine> tail_N(@PathVariable(value = "n") final int n) throws Exception {
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return appender.tail_N(n);
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}
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@RequestMapping(value = "/ui/log/continue/{after}")
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public @ResponseBody
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List<LogLine> tail_continue(@PathVariable(value = "after") final int after) throws Exception {
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return appender.tail_continue(after);
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}
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@RequestMapping(value = "/ui/log/level/{level}/{resource}")
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public @ResponseBody
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boolean updateLogLevel(@PathVariable(value = "level") final String level, @PathVariable(value = "resource") final String resource) throws Exception {
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if (resource != null && level != null) {
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LogManager.getLogger(resource).setLevel(Level.toLevel(level));
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}
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return true;
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}
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}
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