com.netflix.spinnaker.fiat.roles.file.FileBasedUserRolesProvider.java Source code

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Here is the source code for com.netflix.spinnaker.fiat.roles.file.FileBasedUserRolesProvider.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.fiat.roles.file;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
import com.netflix.spinnaker.fiat.model.resources.Role;
import com.netflix.spinnaker.fiat.roles.UserRolesProvider;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Slf4j
@Component
@ConditionalOnProperty(value = "auth.groupMembership.service", havingValue = "file")
public class FileBasedUserRolesProvider implements UserRolesProvider {

    @Autowired
    ConfigProps configProps;

    private Map<String, List<Role>> parse() throws IOException {
        return parse(new BufferedReader(new FileReader(new File(configProps.getPath()))));
    }

    private Map<String, List<Role>> parse(Reader source) throws IOException {
        ObjectMapper mapper = new ObjectMapper(new YAMLFactory());
        return mapper.readValue(source, UserRolesMapping.class).toMap();
    }

    @Override
    public List<Role> loadRoles(String userId) {
        try {
            return new ArrayList<>(parse().get(userId));
        } catch (IOException io) {
            log.error("Couldn't load roles for user " + userId + " from file", io);
        }
        return Collections.emptyList();
    }

    @Override
    public Map<String, Collection<Role>> multiLoadRoles(Collection<String> userIds) {
        try {
            return parse().entrySet().stream().filter(e -> userIds.contains(e.getKey()))
                    .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
        } catch (IOException io) {
            log.error("Couldn't mulitLoad roles from file", io);
        }
        return Collections.emptyMap();
    }

    @Data
    @Configuration
    @ConfigurationProperties(prefix = "auth.groupMembership.file")
    static class ConfigProps {
        String path;
    }

    @Data
    static class UserRolesMapping {
        List<UserRoles> users;

        Map<String, List<Role>> toMap() {
            return users.stream().collect(Collectors.toMap(UserRoles::getUsername, UserRoles::getRoles));
        }
    }

    @Data
    static class UserRoles {
        String username;
        List<Role> roles;

        public List<Role> getRoles() {
            return roles.stream().map(r -> new Role(r.getName()).setSource(Role.Source.FILE))
                    .collect(Collectors.toList());
        }
    }
}