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• HealthCheckImpl.java

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com.devonfw.cobigen.impl.healthcheck.HealthCheckImpl Maven / Gradle / Ivy

package com.devonfw.cobigen.impl.healthcheck;

import java.io.File;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.devonfw.cobigen.api.HealthCheck;
import com.devonfw.cobigen.api.constants.BackupPolicy;
import com.devonfw.cobigen.api.constants.ConfigurationConstants;
import com.devonfw.cobigen.api.exception.CobiGenRuntimeException;
import com.devonfw.cobigen.api.to.HealthCheckReport;
import com.devonfw.cobigen.impl.config.ContextConfiguration;
import com.devonfw.cobigen.impl.config.constant.TemplatesConfigurationVersion;
import com.devonfw.cobigen.impl.config.entity.Trigger;
import com.devonfw.cobigen.impl.config.upgrade.ContextConfigurationUpgrader;
import com.devonfw.cobigen.impl.config.upgrade.TemplateConfigurationUpgrader;
import com.devonfw.cobigen.impl.exceptions.BackupFailedException;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;

/**
 * This is the implementation of the HealthCheck. It can upgrade the context configuration and the templates
 * configuration.
 */
public class HealthCheckImpl implements HealthCheck {

    /** Logger instance. */
    private static final Logger LOG = LoggerFactory.getLogger(HealthCheckImpl.class);

    /** HealthCheckReport created by this HealthCheck */
    private HealthCheckReport healthCheckReport = new HealthCheckReport();

    @Override
    public HealthCheckReport upgradeContextConfiguration(Path configurationFolder, BackupPolicy backupPolicy)
        throws BackupFailedException {
        ContextConfigurationUpgrader contextConfigurationUpgrader = new ContextConfigurationUpgrader();
        contextConfigurationUpgrader.upgradeConfigurationToLatestVersion(configurationFolder, backupPolicy);
        return healthCheckReport;
    }

    @Override
    public HealthCheckReport upgradeTemplatesConfiguration(Path templatesConfigurationFolder,
        BackupPolicy backupPolicy) {
        LOG.info("Upgrade of the templates configuration in '{}' triggered.", templatesConfigurationFolder);
        System.out.println(templatesConfigurationFolder.toString());

        TemplateConfigurationUpgrader templateConfigurationUpgrader = new TemplateConfigurationUpgrader();
        try {
            templateConfigurationUpgrader.upgradeConfigurationToLatestVersion(templatesConfigurationFolder,
                backupPolicy);
            LOG.info("Upgrade finished successfully.");
        } catch (BackupFailedException e) {
            healthCheckReport.addError(e);
            if (containsAnyExceptionOfClass(BackupFailedException.class)) {
                templateConfigurationUpgrader.upgradeConfigurationToLatestVersion(templatesConfigurationFolder,
                    BackupPolicy.NO_BACKUP);
                LOG.info("Upgrade finished successfully but without backup.");
            } else {
                healthCheckReport.addError(new CobiGenRuntimeException("Upgrade aborted"));
                LOG.info("Upgrade aborted.");
            }
        }
        return healthCheckReport;
    }

    /**
     * @param typeToBeFound
     *            the type to find
     * @return true if any exception in the list of errors of the health check is equal to or subtype of the
     *         parameter
     */
    private boolean containsAnyExceptionOfClass(Class typeToBeFound) {
        return healthCheckReport.getErrors().stream().anyMatch(e -> typeToBeFound.isAssignableFrom(e.getClass()));
    }

    @Override
    public HealthCheckReport upgradeAllConfigurations(Path contextConfigurationPath, BackupPolicy backupPolicy) {
        try {
            upgradeContextConfiguration(contextConfigurationPath, backupPolicy);
        } catch (BackupFailedException e) {
            upgradeContextConfiguration(contextConfigurationPath, BackupPolicy.NO_BACKUP);
        }

        ContextConfiguration contextConfiguration = new ContextConfiguration(contextConfigurationPath);
        List expectedTemplatesConfigurations = new ArrayList<>();
        Set hasConfiguration = Sets.newHashSet();
        Map upgradeableConfigurations = healthCheckReport.getUpgradeableConfigurations();

        for (Trigger t : contextConfiguration.getTriggers()) {
            expectedTemplatesConfigurations.add(t.getTemplateFolder());
            hasConfiguration.add(t.getTemplateFolder());
        }
        healthCheckReport.setHasConfiguration(hasConfiguration);
        upgradeableConfigurations.put("TempOne", contextConfigurationPath.resolve("TempOne"));
        healthCheckReport.setUpgradeableConfigurations(upgradeableConfigurations);

        if (expectedTemplatesConfigurations.containsAll(healthCheckReport.getHasConfiguration())) {
            for (final String key : expectedTemplatesConfigurations) {
                if (healthCheckReport.getUpgradeableConfigurations().containsKey(key)) {
                    upgradeTemplatesConfiguration(healthCheckReport.getUpgradeableConfigurations().get(key),
                        backupPolicy);
                }
            }
        } else {
            LOG.error("Expected template configuration does not equal the actual template configuration");
            throw new CobiGenRuntimeException("Update of the templates configuration was not successful, please retry");
        }
        return healthCheckReport;
    }

    @Override
    public HealthCheckReport perform(Path configurationPath) {
        // 1. Get configuration resources
        // determine expected template configurations to be defined
        ContextConfiguration contextConfiguration = new ContextConfiguration(configurationPath);
        List expectedTemplatesConfigurations = Lists.newArrayList();
        Set hasConfiguration = Sets.newHashSet();
        Set isAccessible = Sets.newHashSet();
        Map upgradeableConfigurations = Maps.newHashMap();
        Set upToDateConfigurations = Sets.newHashSet();
        Path pathForCobigenTemplates = null;
        for (Trigger t : contextConfiguration.getTriggers()) {
            expectedTemplatesConfigurations.add(t.getTemplateFolder());
        }
        // 2. Determine current state
        TemplateConfigurationUpgrader templateConfigurationUpgrader = new TemplateConfigurationUpgrader();
        pathForCobigenTemplates = Paths
            .get(configurationPath + File.separator + "src" + File.separator + "main" + File.separator + "templates");

        for (String expectedTemplateFolder : expectedTemplatesConfigurations) {
            if (pathForCobigenTemplates.toFile().exists()) {
                String configPath = (configurationPath + File.separator + "src" + File.separator + "main"
                    + File.separator + "templates").toString();
                hasConfiguration.add(configPath);
                isAccessible.add(configPath);
                Path expectedTemplateFolderForResolvedVer = (Paths.get(
                    pathForCobigenTemplates + File.separator + expectedTemplateFolder.replace("/", File.separator)));
                TemplatesConfigurationVersion resolvedVersion = templateConfigurationUpgrader
                    .resolveLatestCompatibleSchemaVersion(expectedTemplateFolderForResolvedVer);
                if (resolvedVersion != null) {
                    if (resolvedVersion != TemplatesConfigurationVersion.getLatest()) {
                        upgradeableConfigurations.put(expectedTemplateFolder, pathForCobigenTemplates);
                    } else {
                        upToDateConfigurations.add(expectedTemplateFolder);
                    }
                }

            } else {

                Path templateFolder = configurationPath.resolve(expectedTemplateFolder);
                Path templatesConfigurationPath =
                    templateFolder.resolve(ConfigurationConstants.TEMPLATES_CONFIG_FILENAME);
                File templatesConfigurationFile = templatesConfigurationPath.toFile();
                if (templatesConfigurationFile.exists()) {
                    hasConfiguration.add(expectedTemplateFolder);
                    if (templatesConfigurationFile.canWrite()) {
                        isAccessible.add(expectedTemplateFolder);

                        TemplatesConfigurationVersion resolvedVersion =
                            templateConfigurationUpgrader.resolveLatestCompatibleSchemaVersion(templateFolder);
                        if (resolvedVersion != null) {
                            if (resolvedVersion != TemplatesConfigurationVersion.getLatest()) {
                                upgradeableConfigurations.put(expectedTemplateFolder, templateFolder);
                            } else {
                                upToDateConfigurations.add(expectedTemplateFolder);
                            }
                        }
                    }
                }

            }
        }

        healthCheckReport.setExpectedTemplatesConfigurations(expectedTemplatesConfigurations);
        healthCheckReport.setHasConfiguration(hasConfiguration);
        healthCheckReport.setIsAccessible(isAccessible);
        healthCheckReport.setUpgradeableConfigurations(upgradeableConfigurations);
        healthCheckReport.setUpToDateConfigurations(upToDateConfigurations);

        return healthCheckReport;
    }

}