package liquibase.change.core;
import liquibase.change.AbstractChange;
import liquibase.change.ChangeMetaData;
import liquibase.change.DatabaseChange;
import liquibase.change.DatabaseChangeProperty;
import liquibase.database.Database;
import liquibase.exception.UnexpectedLiquibaseException;
import liquibase.exception.ValidationErrors;
import liquibase.logging.LogFactory;
import liquibase.parser.core.ParsedNode;
import liquibase.parser.core.ParsedNodeException;
import liquibase.serializer.LiquibaseSerializable;
import liquibase.sql.Sql;
import liquibase.statement.SqlStatement;
import liquibase.statement.core.RuntimeStatement;
import liquibase.util.StringUtils;
@DatabaseChange(name="output", description = "Logs a message and continues execution.", priority = ChangeMetaData.PRIORITY_DEFAULT, since = "3.3")
public class OutputChange extends AbstractChange {
private String message;
private String target = "";
@Override
public ValidationErrors validate(Database database) {
ValidationErrors validate = super.validate(database);
validate.checkRequiredField("message", getMessage());
return validate;
}
@DatabaseChangeProperty(description = "Message to output", exampleValue = "Make sure you feed the cat", serializationType = LiquibaseSerializable.SerializationType.DIRECT_VALUE)
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = StringUtils.trimToNull(message);
}
@DatabaseChangeProperty(description = "Target for message. Possible values: STDOUT, STDERR, FATAL, WARN, INFO, DEBUG. Default value: STDERR", exampleValue = "STDERR")
public String getTarget() {
if (target == null) {
return "STDERR";
}
return target;
}
public void setTarget(String target) {
this.target = StringUtils.trimToNull(target);
}
@Override
public SqlStatement[] generateStatements(Database database) {
return new SqlStatement[] { new RuntimeStatement() {
@Override
public Sql[] generate(Database database) {
String target = getTarget();
if (target.equalsIgnoreCase("STDOUT")) {
System.out.println(getMessage());
} else if (target.equalsIgnoreCase("STDERR")) {
System.err.println(getMessage());
} else if (target.equalsIgnoreCase("DEBUG")) {
LogFactory.getInstance().getLog().debug(getMessage());
} else if (target.equalsIgnoreCase("INFO")) {
LogFactory.getInstance().getLog().info(getMessage());
} else if (target.equalsIgnoreCase("WARN") || target.equalsIgnoreCase("WARNING")) {
LogFactory.getInstance().getLog().warning(getMessage());
} else if (target.equalsIgnoreCase("SEVERE") || target.equalsIgnoreCase("FATAL") || target.equalsIgnoreCase("ERROR")) {
LogFactory.getInstance().getLog().severe(getMessage());
} else {
throw new UnexpectedLiquibaseException("Unknown target: "+target);
}
return null;
}
}};
}
@Override
public String getConfirmationMessage() {
return "Output: "+getMessage();
}
@Override
public String getSerializedObjectNamespace() {
return STANDARD_CHANGELOG_NAMESPACE;
}
@Override
public Object getSerializableFieldValue(String field) {
Object value = super.getSerializableFieldValue(field);
if (field.equals("target") && value.equals("")) {
return null;
}
return value;
}
}