org.bidib.wizard.mvc.ping.model.DefaultPingTablePreferences Maven / Gradle / Ivy

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jBiDiB BiDiB Wizard Client Application POM
There is a newer version: 2.0.29
package org.bidib.wizard.mvc.ping.model;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.io.FileUtils;
import org.bidib.jbidibc.messages.utils.ByteUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;

public class DefaultPingTablePreferences implements PingTablePreferences {

    private static final Logger LOGGER = LoggerFactory.getLogger(DefaultPingTablePreferences.class);

    private final transient ObjectMapper mapper;

    private final transient File pingTablePreferencesFile;

    private Map preferencesMap = new HashMap<>();

    public DefaultPingTablePreferences(final File pingTablePreferencesFile) {
        this.pingTablePreferencesFile = pingTablePreferencesFile;

        this.mapper = new ObjectMapper();
        this.mapper.registerModule(new JavaTimeModule());
    }

    @Override
    public void load() {

        this.preferencesMap.clear();

        try {
            PingTableNodePreferenceEntry[] entries =
                this.mapper.readValue(this.pingTablePreferencesFile, PingTableNodePreferenceEntry[].class);
            for (PingTableNodePreferenceEntry entry : entries) {

                this.preferencesMap.put(ByteUtils.parseHexUniqueId(entry.getUid()), entry);
            }

        }
        catch (FileNotFoundException ex) {
            LOGGER.warn("Load the preferences store failed because the file was not found: {}", ex.getMessage());
        }
        catch (IOException ex) {
            LOGGER.warn("Load the preferences store failed.", ex);
        }

        LOGGER.info("Current preferencesMap: {}", preferencesMap);
    }

    @Override
    public void store() {

        LOGGER.info("Store the ping preferences to file.");

        try {
            // make sure the path to the preferences store exists
            FileUtils.forceMkdirParent(this.pingTablePreferencesFile);

            // write the preferences store
            this.mapper
                .writerWithDefaultPrettyPrinter().writeValue(this.pingTablePreferencesFile,
                    preferencesMap.values().toArray(new PingTableNodePreferenceEntry[0]));
        }
        catch (IOException ex) {
            LOGGER.warn("Store ping preferences failed.", ex);
        }
    }

    @Override
    public void clear() {
        LOGGER.info("Clear the pairing store.");
        preferencesMap.clear();
    }

    @Override
    public PingTableNodePreferenceEntry getPrefences(long uniqueId) {
        Long lookupValue = Long.valueOf(uniqueId);
        return preferencesMap.get(lookupValue);
    }

    @Override
    public PingTableNodePreferenceEntry getPrefencesOrDefault(long uniqueId) {
        Long lookupValue = Long.valueOf(uniqueId);
        return preferencesMap
            .computeIfAbsent(lookupValue, uid -> new PingTableNodePreferenceEntry(ByteUtils.formatHexUniqueId(uid)));
    }

}