com.sap.cloud.mt.subscription.DbCredentials Maven / Gradle / Ivy

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/*
 * *************************************************************************
 *  * (C) 2019-2021 SAP SE or an SAP affiliate company. All rights reserved. *
 *  *************************************************************************
 */

package com.sap.cloud.mt.subscription;

import com.sap.cloud.mt.subscription.exceptions.InternalError;
import org.apache.commons.lang3.StringUtils;

import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;

public abstract class DbCredentials {
    protected static final String JDBC = "jdbc:";
    private final String user;
    private final String password;
    private final String host;
    private final String port;
    private final String driver;
    protected final URI uri;

    protected DbCredentials(String user, String password, String host, String port, String driver, String uriStr) throws InternalError {
        this.user = user;
        this.password = password;
        this.host = host;
        this.port = port;
        this.driver = driver;
        if (StringUtils.isNotEmpty(uriStr)) {
            uri = getUri(uriStr);
        } else {
            uri = null;
        }
    }

    protected DbCredentials(DbCredentials dbCredentials) {
        this.user = dbCredentials.user;
        this.password = dbCredentials.password;
        this.host = dbCredentials.host;
        this.port = dbCredentials.port;
        this.driver = dbCredentials.driver;
        this.uri = dbCredentials.uri;
    }

    public abstract String getDatabaseId();

    public final String getUrl() {
        return buildUrl();
    }

    public abstract DbIdentifiers.DB getDB();

    public String getUser() {
        if (StringUtils.isNotEmpty(user)) {
            return user;
        } else {
            if (uri == null) {
                return "";
            }
            UserAndPassword userAndPassword = getUserFromUri(uri);
            return userAndPassword.user;
        }
    }

    public String getPassword() {
        if (StringUtils.isNotEmpty(password)) {
            return password;
        } else {
            if (uri == null) {
                return "";
            }
            UserAndPassword userAndPassword = getUserFromUri(uri);
            return userAndPassword.password;
        }
    }

    public String getDriver() {
        return driver;
    }

    public String getHost() {
        if (StringUtils.isNotEmpty(host)) {
            return host;
        } else {
            if (uri == null) {
                return "";
            }
            List hostAndPorts = getHostsFromUri(uri);
            if (!hostAndPorts.isEmpty()) {
                return hostAndPorts.get(0).host;
            } else {
                return "";
            }
        }
    }

    public String getPort() {
        if (StringUtils.isNotEmpty(port)) {
            return port;
        } else {
            if (uri == null) {
                return "";
            }
            List hostAndPorts = getHostsFromUri(uri);
            if (!hostAndPorts.isEmpty()) {
                return hostAndPorts.get(0).port;
            } else {
                return "";
            }
        }
    }

    public abstract DbCredentials createCopy();

    private URI getUri(String uriStr) throws InternalError {
        if (StringUtils.isEmpty(uriStr)) {
            throw new InternalError("No uri set");
        }
        try {
            if (uriStr.startsWith(JDBC)) {
                return new URI(uriStr.substring(5));
            } else {
                return new URI(uriStr);
            }
        } catch(URISyntaxException e) {
            throw new InternalError(e);
        }
    }

    protected abstract String buildUrl();

    protected abstract List getHostsFromUri(URI uri);

    protected abstract UserAndPassword getUserFromUri(URI uri);

    protected static class HostAndPort {
        String host;
        String port;
    }

    protected static class UserAndPassword {
        String user;
        String password;
    }
}