org.cloudifysource.dsl.internal.validators.ComputeTemplateValidator.java Source code

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Here is the source code for org.cloudifysource.dsl.internal.validators.ComputeTemplateValidator.java

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/*******************************************************************************
 * Copyright (c) 2013 GigaSpaces Technologies Ltd. All rights reserved
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package org.cloudifysource.dsl.internal.validators;

import java.io.File;

import org.apache.commons.lang.StringUtils;
import org.cloudifysource.domain.DSLValidation;
import org.cloudifysource.domain.cloud.compute.ComputeTemplate;
import org.cloudifysource.dsl.internal.DSLValidationContext;
import org.cloudifysource.dsl.internal.DSLValidationException;

/**
 * 
 * @author adaml
 *
 */
public class ComputeTemplateValidator implements DSLValidator {

    private ComputeTemplate entity;

    @Override
    public void setDSLEntity(Object dslEntity) {
        this.entity = (ComputeTemplate) dslEntity;

    }

    /**
     * 
     * @param context - validation context.
     * @throws DSLValidationException - in case validation failed.
     */
    @DSLValidation
    public void validateDefaultValues(final DSLValidationContext context) throws DSLValidationException {
        if (this.entity.getRemoteDirectory() == null || this.entity.getRemoteDirectory().trim().isEmpty()) {
            throw new DSLValidationException("Remote directory for template is missing");
        }

        if (StringUtils.isBlank(this.entity.getLocalDirectory())) {
            throw new DSLValidationException("Local directory for template is missing");
        }

        if ("ENTER_KEY_FILE_NAME".equals(this.entity.getKeyFile())) {
            throw new DSLValidationException(
                    "Key file name field still has default configuration value of ENTER_KEY_FILE_NAME");
        }

    }

    @DSLValidation
    void validateRelativeUploadDir(final DSLValidationContext context) throws DSLValidationException {
        final File uploadDir = findUploadDir(context);

        // check key file!
        if (StringUtils.isNotBlank(this.entity.getKeyFile())) {
            final File keyFile = new File(uploadDir, this.entity.getKeyFile());
            if (!keyFile.exists() || !keyFile.isFile()) {
                throw new DSLValidationException("The specified key file was not found: " + keyFile);
            }

        }

        // this.localDirectory = uploadDir.getAbsolutePath();
        // logger.info("SETTING LOCAL DIRECTORY TO ABSOLUTE PATH: " +
        // this.localDirectory);

    }

    /************
     * This is a unique situation: we need two pieces of information - the absolute location of the local directory, and
     * the relative location of the local directory. So this validation fills in this field - note that the absolute
     * field does not have a setter - groovy files can't directly set this value.
     *
     * @param context
     *            .
     * @throws DSLValidationException .
     */
    @DSLValidation
    void validateAbsoluteUploadDir(final DSLValidationContext context) throws DSLValidationException {
        if (entity.getAbsoluteUploadDir() != null) {
            throw new DSLValidationException("absolute upload directory may not be set by external code");
        }
        //      logger.fine("SETTING ABSOLUTE LOCAL UPLOAD DIRECTORY TO ABSOLUTE PATH: " + this.entity.getAbsoluteUploadDir());
        this.entity.setAbsoluteUploadDir(findUploadDir(context).getAbsolutePath());

    }

    private File findUploadDir(final DSLValidationContext context) throws DSLValidationException {
        final File relativeUploadDir = new File(this.entity.getLocalDirectory());
        if (relativeUploadDir.isAbsolute()) {
            throw new DSLValidationException("Upload directory of a cloud template must be a relative path, "
                    + "relative to the cloud configuration directory");
        }

        File dslDir = null;
        if (context.getFilePath() == null) {
            throw new IllegalStateException("The DSL File location is not set! Cannot validate!");
        } else {
            final File dslFile = new File(context.getFilePath());
            dslDir = dslFile.getParentFile();
        }

        final File uploadDir = new File(dslDir, entity.getLocalDirectory());
        if (!uploadDir.exists()) {
            throw new DSLValidationException("Could not find upload directory at: " + uploadDir);
        }

        if (!uploadDir.isDirectory()) {
            throw new DSLValidationException("Upload directory, set to: " + uploadDir + " is not a directory");
        }
        return uploadDir;
    }

    @DSLValidation
    public void validateOpenFilesLimitOnProvilegedMode(final DSLValidationContext context)
            throws DSLValidationException {
        if (this.entity.getOpenFilesLimit() == null) {
            return;
        }

        if (this.entity.isPrivileged()) {
            return;
        }

        throw new DSLValidationException(
                "Setting an open files limit requires that the template run in privileged mode");

    }

}