AdmMono/src/com/rjconsultores/ventaboletos/FlyWay.java

432 lines
12 KiB
Java

package com.rjconsultores.ventaboletos;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.Timestamp;
import java.util.Calendar;
import java.util.HashMap;
import java.util.Map;
import javax.sql.DataSource;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.flywaydb.core.Flyway;
import org.flywaydb.core.api.callback.FlywayCallback;
import com.rjconsultores.ventaboletos.vo.FlyWayCustomDetail;
public class FlyWay {
private static final Logger log = LogManager.getLogger(FlyWay.class);
private static final FlyWay INSTANCE = new FlyWay();
final private static String TABELA_FLYWAY = "schema_version_cst";
final private static String AMBIENTE_DEV = "dev";
final private static String AMBIENTE_CONSULTA = "consulta";
final File JBOSS_DATA = getJBossDataDirectory();
private DataSource dataSource = null;
private String url = null;
private String user = null;
private String password = null;
private String location = "db.migration";
private String oldies = "db.backup.oracle";
private FlyWay() {
}
public static FlyWay getInstance() {
return INSTANCE;
}
private File getJBossDataDirectory() {
try {
return new File(System.getProperty("jboss.server.data.dir"));
} catch (Exception e) {
return null;
}
}
public void defineLocation(final String location) {
this.location = location;
}
public void defineDataSource(final DataSource dataSource) {
this.dataSource = dataSource;
fixFiles(dataSource);
}
public void defineProperties(final String url, final String user, final String password) {
this.url = url;
this.user = user;
this.password = password;
}
private void fixFiles(final DataSource ds) {
try {
Connection c = dataSource.getConnection();
Statement s = c.createStatement();
fixVersion(s, "20161710.1833", "20161017.1833", "V20161017_1833__mantis8112.sql");
fixVersion(s, "20161910.0934", "20161019.0934", "V20161019_0934__mantis7907.sql");
fixVersion(s, "20162410.1119", "20161024.1119", "V20161024_1119__mantis7904.sql");
s.close();
c.close();
} catch (SQLException e) {
log.error(e.getMessage(), e);
}
}
private void fixVersion(final Statement s, final String oldVersion, final String newVersion, final String newScript) throws SQLException {
ResultSet rs = s.executeQuery("select count(*) as total from \"schema_version\" where \"version\" like '" + oldVersion + "'");
int total = 0;
while (rs.next()) {
total = rs.getInt("total");
}
rs.close();
if (total > 0) {
log.info("Fix version " + oldVersion + " to new version " + newVersion + " and new script " + newScript);
StringBuilder sql = new StringBuilder("");
sql.append(" update \"schema_version\"");
sql.append(" set \"version\" = '" + newVersion + "', \"script\" = '" + newScript + "'");
sql.append(" where \"version\" like '" + oldVersion + "'");
s.executeUpdate(sql.toString());
}
}
public boolean start() {
return start(null, null, false);
}
public boolean start(Boolean isReloadFyway) {
return start(null, null, isReloadFyway);
}
public boolean startCustom() {
String location = "db.performance";
if (JBOSS_DATA != null) {
File data = new File(JBOSS_DATA, "flyway");
if (!data.exists()) {
data.mkdirs();
}
if (!validarScripts(data)) {
return true;
}
location = "filesystem:" + data.getPath();
}
return start(location, TABELA_FLYWAY, false);
}
public boolean start(final String customLocation, final String customTable, Boolean isReloadFlyway) {
log.info("Executando Flyway...");
try{
String ambiente = System.getProperty("ambiente") ==null || System.getProperty("ambiente").isEmpty() ? "" : System.getProperty("ambiente");
if( (AMBIENTE_DEV.equalsIgnoreCase(ambiente) && AMBIENTE_CONSULTA.equalsIgnoreCase(ambiente)) && Boolean.FALSE.equals(isReloadFlyway) ) {
log.warn("Flyway não executado. Ambiente = dev ou consulta");
return true;
}
final Flyway flyway = new Flyway();
if (customTable != null) {
flyway.setTable(customTable);
}
if (customLocation != null) {
flyway.setLocations(customLocation);
} else if (this.location != null && !this.location.equals("db.migration")) {
flyway.setLocations(this.location);
}else {
flyway.setLocations(this.oldies, this.location);
}
if (dataSource != null) {
flyway.setDataSource(dataSource);
} else {
flyway.setDataSource(url, user, password);
dataSource = flyway.getDataSource();
}
execute(flyway);
log.info("Flyway executado.");
}catch(Throwable t){
log.error("Erro ao executar o Flyway",t);
return false;
}
return true;
}
public void execute(final Flyway flyway) {
flyway.setValidateOnMigrate(false);
flyway.setIgnoreFutureMigrations(true);
flyway.setOutOfOrder(true);
flyway.setBaselineOnMigrate(true);
if (flyway.getTable().equals(TABELA_FLYWAY)) {
FlyWayCallback errorCallback = new FlyWayCallback();
FlywayCallback[] callbacks = new FlywayCallback[]{ errorCallback };
flyway.setCallbacks(callbacks);
boolean reexecute = false;
do {
reexecute = false;
try {
flyway.migrate();
} catch (final Exception e) {
if (errorCallback.getScriptError() != null && JBOSS_DATA != null) {
reexecute = true;
log.error("[Flyway] Erro ao executar o script: " + errorCallback.getScriptError() + ". Este script sera desabilitado na tabela FLYWAY_SCRIPTS.");
File scriptFile = new File(JBOSS_DATA, "flyway");
scriptFile = new File(scriptFile, errorCallback.getScriptError());
if (scriptFile.exists()) {
boolean success = scriptFile.delete();
log.info("[Flyway] Excluindo fisicamente o script: " + errorCallback.getScriptError() + ". " + (success ? "OK" : "ERROR"));
if (!success) {
reexecute = false;
}
}
Connection c = null;
PreparedStatement ps = null;
try {
c = flyway.getDataSource().getConnection();
ps = c.prepareStatement("update flyway_scripts set activo = 0 where nome like ?");
ps.setString(1, errorCallback.getScriptError().replace(".sql", ""));
ps.executeUpdate();
} catch (SQLException e1) {
} finally {
if (ps != null) {
try { ps.close(); } catch (SQLException e1) {}
}
if (c != null) {
try { c.close(); } catch (SQLException e1) {}
}
}
}
flyway.repair();
}
} while (reexecute);
} else {
flyway.migrate();
}
}
private boolean validarScripts(File data) {
Map<String, FlyWayCustomDetail> scripts = new HashMap<String, FlyWayCustomDetail>(0);
try {
StringBuilder sb = new StringBuilder();
boolean existe = existeSchema(dataSource.getConnection());
if (existe) {
sb.append(" select nome as nome_arquivo, sql as sql_arquivo, sql_erro as erro, datahora_execucao as datahora");
sb.append(" from flyway_scripts");
sb.append(" where activo = 1 and nome not in (select replace(\"script\", '.sql', '') from \"schema_version_cst\")");
sb.append(" order by nome_arquivo");
} else {
sb.append(" select nome as nome_arquivo, sql as sql_arquivo, sql_erro as erro, datahora_execucao as datahora");
sb.append(" from flyway_scripts");
sb.append(" where activo = 1");
sb.append(" order by nome_arquivo");
}
Connection c = dataSource.getConnection();
Statement s = c.createStatement();
ResultSet rs = s.executeQuery(sb.toString());
while (rs.next()) {
if (!isRegistroValido(rs.getString("nome_arquivo"), rs.getString("sql_arquivo"))) {
continue;
}
Timestamp timestamp = rs.getTimestamp("datahora");
FlyWayCustomDetail detail = new FlyWayCustomDetail();
detail.setVersion(rs.getString("nome_arquivo"));
detail.setSql(rs.getString("sql_arquivo"));
detail.setErrorCode(rs.getString("erro"));
if (timestamp != null) {
detail.setDatetimeExecute(new java.util.Date(timestamp.getTime()));
}
scripts.put(rs.getString("nome_arquivo"), detail);
}
rs.close();
s.close();
c.close();
} catch (SQLException e) {
log.error(e.getMessage(), e);
}
if (scripts.isEmpty()) {
return false;
}
boolean retorno = false;
Writer writer = null;
for (Map.Entry<String, FlyWayCustomDetail> entry : scripts.entrySet()) {
if (entry.getValue().getDatetimeExecute() != null) {
Calendar atual = Calendar.getInstance();
if (atual.getTime().before(entry.getValue().getDatetimeExecute())) {
continue;
}
}
File scriptFile = new File(data, entry.getKey() + ".sql");
if (scriptFile.exists()) {
scriptFile.delete();
}
if (!scriptFile.exists()) {
StringBuilder sb = new StringBuilder();
if (entry.getValue().getErrorCode() != null) {
sb.append("declare").append("\n");
sb.append(" object_exists exception;").append("\n").append("\n");
sb.append(" pragma exception_init (object_exists , ").append(entry.getValue().getErrorCode()).append(");").append("\n");
sb.append("begin").append("\n");
sb.append(" execute immediate '").append(entry.getValue().getSql()).append("';").append("\n");
sb.append(" exception when object_exists then null;").append("\n");
sb.append("end;");
} else {
sb.append(entry.getValue().getSql());
}
try {
writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(scriptFile), "utf-8"));
writer.write(sb.toString());
log.info("[Flyway] Script gerado: " + scriptFile.toString());
retorno = true;
} catch (IOException ex) {
} finally {
try {writer.close();} catch (Exception ex) {log.info(ex.getMessage(), ex);}
}
}
}
return retorno;
}
private boolean isRegistroValido(String versao, String sql) {
boolean valido = true;
String v[] = versao.split("_");
if (!versao.startsWith("V")) {
valido = false;
} else {
if (!(v.length == 4)) {
valido = false;
}
}
if (!valido) {
Connection c = null;
PreparedStatement ps = null;
try {
c = dataSource.getConnection();
ps = c.prepareStatement("update flyway_scripts set activo = 0 where nome like ?");
ps.setString(1, versao);
ps.executeUpdate();
} catch (SQLException e1) {
} finally {
if (ps != null) {
try { ps.close(); } catch (SQLException e1) {}
}
if (c != null) {
try { c.close(); } catch (SQLException e1) {}
}
}
}
return valido;
}
private boolean existeSchema(Connection c) {
StringBuilder sb = new StringBuilder();
sb.append("SELECT count(table_name) as existe FROM user_tables WHERE table_name = 'schema_version_cst'");
try {
Statement s = c.createStatement();
ResultSet rs = s.executeQuery(sb.toString());
int existe = 0;
while (rs.next()) {
existe = rs.getInt("existe");
}
rs.close();
s.close();
c.close();
if (existe > 0) {
return true;
}
} catch (SQLException e) {
log.error(e.getMessage(), e);
}
return false;
}
}