nl.vpro.VersionService Maven / Gradle / Ivy

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The basic domain classes for 'media', the core of POMS. Also, the 'update' XML bindings for it. It also contains some closely related domain classes like the enum to contain NICAM kijkwijzer settings.

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package nl.vpro;

import lombok.extern.slf4j.Slf4j;

import java.io.IOException;
import java.io.InputStream;
import java.util.Objects;
import java.util.Properties;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import nl.vpro.util.IntegerVersion;

/**
 * @author Michiel Meeuwissen
 * @since 5.5
 */
@Slf4j
public class VersionService {

    private static final String FALLBACK = "7.9.0";

    private static String version;

    private static IntegerVersion integerVersion;

    private VersionService() {

    }

    public static String version() {
        if (version == null) {
            try {
                InputStream inputStream = VersionService.class.getClassLoader().getResourceAsStream("/maven.properties");
                if (inputStream != null) {
                    Properties properties = new Properties();
                    properties.load(inputStream);
                    version = properties.getProperty("git.build.version");
                } else {
                    log.warn("Could not find /maven.properties");
                    version = FALLBACK;
                }
            } catch (IOException e) {
                log.error(e.getMessage(), e);
                return FALLBACK;
            }
        }
        return version;
    }

    public static IntegerVersion integerVersion() {
        if (integerVersion == null) {
            String version = version();
            Matcher matcher = Pattern.compile("([0-9]+(?:\\.[0-9]+(?:\\.[0-9]+)?)?).*").matcher(version);
            if (matcher.matches()) {
                integerVersion = new IntegerVersion(matcher.group(1));
            }
        }
        return integerVersion;
    }

    /**
     * E.g. in test cases in may be useful to fix version.
     */
    public static void setVersion(IntegerVersion version) {
        if (! Objects.equals(VersionService.integerVersion(), version)) {
            log.info("Setting version {} -> {}", VersionService.version, version);
            VersionService.integerVersion = version;
            VersionService.version = String.valueOf(version);
        }
    }

     /**
     * E.g. in test cases in may be useful to fix version.
     */
    public static void setVersion(int ... version) {
        setVersion(IntegerVersion.of(version));
    }
}