// Licensed to the Apache Software Foundation (ASF) under one

// or more contributor license agreements.  See the NOTICE file

// distributed with this work for additional information

// regarding copyright ownership.  The ASF licenses this file

// to you 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.

#include "io/hdfs_util.h"

#include <bthread/bthread.h>

#include <bthread/butex.h>

#include <bvar/latency_recorder.h>

#include <gen_cpp/cloud.pb.h>

#include <ostream>

#include <thread>

#include "common/logging.h"

#include "core/string_ref.h"

#include "io/fs/err_utils.h"

#include "io/hdfs_builder.h"

namespace doris::io {

namespace hdfs_bvar {

bvar::LatencyRecorder hdfs_read_latency("hdfs_read");

bvar::LatencyRecorder hdfs_write_latency("hdfs_write");

bvar::LatencyRecorder hdfs_create_dir_latency("hdfs_create_dir");

bvar::LatencyRecorder hdfs_open_latency("hdfs_open");

bvar::LatencyRecorder hdfs_close_latency("hdfs_close");

bvar::LatencyRecorder hdfs_flush_latency("hdfs_flush");

bvar::LatencyRecorder hdfs_hflush_latency("hdfs_hflush");

bvar::LatencyRecorder hdfs_hsync_latency("hdfs_hsync");

bvar::LatencyRecorder hdfs_get_path_info_latency("hdfs_get_path_info");

}; // namespace hdfs_bvar

Path convert_path(const Path& path, const std::string& namenode) {

    std::string fs_path;

    if (path.native().find(namenode) != std::string::npos) {

        // `path` is uri format, remove the namenode part in `path`

        // FIXME(plat1ko): Not robust if `namenode` doesn't appear at the beginning of `path`

        fs_path = path.native().substr(namenode.size());

    } else {

        fs_path = path;

    }

    // Always use absolute path (start with '/') in hdfs

    if (fs_path.empty() || fs_path[0] != '/') {

        fs_path.insert(fs_path.begin(), '/');

    }

    return fs_path;

}

bool is_hdfs(const std::string& path_or_fs) {

    return path_or_fs.rfind("hdfs://") == 0;

}

THdfsParams to_hdfs_params(const cloud::HdfsVaultInfo& vault) {

    THdfsParams params;

    auto build_conf = vault.build_conf();

    params.__set_fs_name(build_conf.fs_name());

    if (build_conf.has_user()) {

        params.__set_user(build_conf.user());

    }

    if (build_conf.has_hdfs_kerberos_principal()) {

        params.__set_hdfs_kerberos_principal(build_conf.hdfs_kerberos_principal());

    }

    if (build_conf.has_hdfs_kerberos_keytab()) {

        params.__set_hdfs_kerberos_keytab(build_conf.hdfs_kerberos_keytab());

    }

    std::vector<THdfsConf> tconfs;

    for (const auto& confs : vault.build_conf().hdfs_confs()) {

        THdfsConf conf;

        conf.__set_key(confs.key());

        conf.__set_value(confs.value());

        tconfs.emplace_back(conf);

    }

    params.__set_hdfs_conf(tconfs);

    return params;

}

} // namespace doris::io