com.netflix.spinnaker.clouddriver.kubernetes.v2.validator.KubernetesValidationUtil.java Source code

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Here is the source code for com.netflix.spinnaker.clouddriver.kubernetes.v2.validator.KubernetesValidationUtil.java

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/*
 * Copyright 2017 Google, Inc.
 *
 * 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 com.netflix.spinnaker.clouddriver.kubernetes.v2.validator;

import com.netflix.spinnaker.clouddriver.kubernetes.v2.security.KubernetesV2Credentials;
import com.netflix.spinnaker.clouddriver.security.AccountCredentials;
import com.netflix.spinnaker.clouddriver.security.AccountCredentialsProvider;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.validation.Errors;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

@Slf4j
public class KubernetesValidationUtil {
    final private String context;
    final private Errors errors;

    public KubernetesValidationUtil(String context, Errors errors) {
        this.context = context;
        this.errors = errors;
    }

    private String joinAttributeChain(String... attributes) {
        List<String> chain = new ArrayList<>();
        chain.add(context);
        Collections.addAll(chain, attributes);
        return String.join(".", chain);
    }

    public void reject(String errorName, String... attributes) {
        String field = joinAttributeChain(attributes);
        String error = joinAttributeChain(field, errorName);
        errors.reject(field, error);
    }

    public boolean validateNotEmpty(String attribute, Object value) {
        if (value == null) {
            reject("empty", attribute);
            return false;
        }

        return true;
    }

    public boolean validateSizeEquals(String attribute, Collection items, int size) {
        if (items.size() != size) {
            reject("size!=" + size, attribute);
            return false;
        }

        return true;
    }

    public boolean validateNotEmpty(String attribute, String value) {
        if (StringUtils.isEmpty(value)) {
            reject("empty", attribute);
            return false;
        }

        return true;
    }

    public boolean validateV2Credentials(AccountCredentialsProvider provider, String accountName,
            String namespace) {
        log.info("Validating credentials for {} {}", accountName, namespace);
        if (!validateNotEmpty("account", accountName)) {
            return false;
        }

        if (StringUtils.isEmpty(namespace)) {
            return true;
        }

        AccountCredentials credentials = provider.getCredentials(accountName);
        if (credentials == null) {
            reject("notFound", "account");
            return false;
        }

        if (!(credentials.getCredentials() instanceof KubernetesV2Credentials)) {
            reject("wrongVersion", "account");
            return false;
        }

        if (!validateNamespace(namespace, (KubernetesV2Credentials) credentials.getCredentials())) {
            return false;
        }

        return true;
    }

    protected boolean validateNamespace(String namespace, KubernetesV2Credentials credentials) {
        final List<String> configuredNamespaces = credentials.getNamespaces();
        if (configuredNamespaces != null && !configuredNamespaces.isEmpty()
                && !configuredNamespaces.contains(namespace)) {
            reject("wrongNamespace", namespace);
            return false;
        }

        final List<String> omitNamespaces = credentials.getOmitNamespaces();
        if (omitNamespaces != null && omitNamespaces.contains(namespace)) {
            reject("omittedNamespace", namespace);
            return false;
        }
        return true;
    }
}