com.sshtools.slf4jtty.TtyServiceProvider Maven / Gradle / Ivy

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An SLF4J log provider that directly implements the SLF4J API and provides logging output suitable for console output (i.e. not to a file). The width of the output is restricted to the terminal width, with the possibility to split the width into multiple sections, each which may be a fixed width, or 'auto' which divides all remaining space amongst other automative sections. Any log attribute fields may then be placed in any of the sections with a particular alignment. Text will not overflow out of its section. Sections may be colour or styled with other text attributes, including hyperlinks for supported termins. Emoticons and other graphical sequences may be used in place of log levels. Configuration is achieved via 'ini' type files, which are reload automatically when changed.

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package com.sshtools.slf4jtty;

import org.slf4j.ILoggerFactory;
import org.slf4j.IMarkerFactory;
import org.slf4j.helpers.BasicMarkerFactory;
import org.slf4j.helpers.NOPMDCAdapter;
import org.slf4j.spi.MDCAdapter;
import org.slf4j.spi.SLF4JServiceProvider;

public class TtyServiceProvider implements SLF4JServiceProvider {

    /**
     * Declare the version of the SLF4J API this implementation is compiled against. 
     * The value of this field is modified with each major release. 
     */
    // to avoid constant folding by the compiler, this field must *not* be final
    public static String REQUESTED_API_VERSION = "2.0.99"; // !final

    private ILoggerFactory loggerFactory;
    private IMarkerFactory markerFactory;
    private MDCAdapter mdcAdapter;

    public ILoggerFactory getLoggerFactory() {
        return loggerFactory;
    }

    @Override
    public IMarkerFactory getMarkerFactory() {
        return markerFactory;
    }

    @Override
    public MDCAdapter getMDCAdapter() {
        return mdcAdapter;
    }

    @Override
    public String getRequestedApiVersion() {
        return REQUESTED_API_VERSION;
    }

    @Override
    public void initialize() {

        loggerFactory = new TtyLoggerFactory();
        markerFactory = new BasicMarkerFactory();
        mdcAdapter = new NOPMDCAdapter();
    }

}