/*
 * 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.
 */
package org.apache.pulsar.common.policies.data;

import static org.apache.pulsar.common.util.FieldParser.value;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.collect.ImmutableList;
import java.io.Serializable;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.stream.Collectors;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;

/**
 * Definition of the offload policies.
 */
@Slf4j
@Data
@NoArgsConstructor
public class OffloadPoliciesImpl implements Serializable, OffloadPolicies {

    private static final long serialVersionUID = 0L;

    public static final List<Field> CONFIGURATION_FIELDS;

    static {
        List<Field> temp = new ArrayList<>();
        Class<OffloadPoliciesImpl> clazz = OffloadPoliciesImpl.class;
        Field[] fields = clazz.getDeclaredFields();
        for (Field field : fields) {
            if (field.isAnnotationPresent(Configuration.class)) {
                temp.add(field);
            }
        }
        CONFIGURATION_FIELDS = Collections.unmodifiableList(temp);
    }

    public static final ImmutableList<String> INTERNAL_SUPPORTED_DRIVER = ImmutableList.of("S3",
        "aws-s3", "google-cloud-storage", "filesystem", "azureblob", "aliyun-oss");
    public static final ImmutableList<String> DRIVER_NAMES;
    static {
        String extraDrivers = System.getProperty("pulsar.extra.offload.drivers", "");
        if (extraDrivers.trim().isEmpty()) {
            DRIVER_NAMES = INTERNAL_SUPPORTED_DRIVER;
        } else {
            DRIVER_NAMES = ImmutableList.<String>builder()
                .addAll(INTERNAL_SUPPORTED_DRIVER)
                .addAll(Arrays.stream(StringUtils.split(extraDrivers, ','))
                    .map(String::trim).collect(Collectors.toSet())).build();
        }
    }

    public static final int DEFAULT_MAX_BLOCK_SIZE_IN_BYTES = 64 * 1024 * 1024;   // 64MiB
    public static final int DEFAULT_GCS_MAX_BLOCK_SIZE_IN_BYTES = 128 * 1024 * 1024;   // 128MiB
    public static final int DEFAULT_READ_BUFFER_SIZE_IN_BYTES = 1024 * 1024;      // 1MiB
    public static final int DEFAULT_OFFLOAD_MAX_THREADS = 2;
    public static final int DEFAULT_OFFLOAD_READ_THREADS = 2;
    public static final int DEFAULT_OFFLOAD_MAX_PREFETCH_ROUNDS = 1;
    public static final String DEFAULT_OFFLOADER_DIRECTORY = "./offloaders";
    public static final Long DEFAULT_OFFLOAD_THRESHOLD_IN_BYTES = null;
    public static final Long DEFAULT_OFFLOAD_THRESHOLD_IN_SECONDS = null;
    public static final Long DEFAULT_OFFLOAD_DELETION_LAG_IN_MILLIS = null;
    public static final String EXTRA_CONFIG_PREFIX = "managedLedgerOffloadExtraConfig";

    public static final String OFFLOAD_THRESHOLD_NAME_IN_CONF_FILE =
            "managedLedgerOffloadAutoTriggerSizeThresholdBytes";
    public static final String DELETION_LAG_NAME_IN_CONF_FILE = "managedLedgerOffloadDeletionLagMs";
    public static final String DATA_READ_PRIORITY_NAME_IN_CONF_FILE = "managedLedgerDataReadPriority";
    public static final OffloadedReadPriority DEFAULT_OFFLOADED_READ_PRIORITY = null;

    // common config
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String offloadersDirectory = DEFAULT_OFFLOADER_DIRECTORY;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String managedLedgerOffloadDriver = null;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private Integer managedLedgerOffloadMaxThreads = DEFAULT_OFFLOAD_MAX_THREADS;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private Integer managedLedgerOffloadReadThreads = DEFAULT_OFFLOAD_READ_THREADS;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private Integer managedLedgerOffloadPrefetchRounds = DEFAULT_OFFLOAD_MAX_PREFETCH_ROUNDS;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private Long managedLedgerOffloadThresholdInSeconds = DEFAULT_OFFLOAD_THRESHOLD_IN_SECONDS;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private Long managedLedgerOffloadThresholdInBytes = DEFAULT_OFFLOAD_THRESHOLD_IN_BYTES;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private Long managedLedgerOffloadDeletionLagInMillis = DEFAULT_OFFLOAD_DELETION_LAG_IN_MILLIS;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private OffloadedReadPriority managedLedgerOffloadedReadPriority = DEFAULT_OFFLOADED_READ_PRIORITY;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private Map<String, String> managedLedgerExtraConfigurations = new HashMap<>();
    // s3 config, set by service configuration or cli
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String s3ManagedLedgerOffloadRegion = null;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String s3ManagedLedgerOffloadBucket = null;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String s3ManagedLedgerOffloadServiceEndpoint = null;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private Integer s3ManagedLedgerOffloadMaxBlockSizeInBytes = DEFAULT_MAX_BLOCK_SIZE_IN_BYTES;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private Integer s3ManagedLedgerOffloadReadBufferSizeInBytes = DEFAULT_READ_BUFFER_SIZE_IN_BYTES;
    // s3 config, set by service configuration
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String s3ManagedLedgerOffloadCredentialId = null;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String s3ManagedLedgerOffloadCredentialSecret = null;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String s3ManagedLedgerOffloadRole = null;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String s3ManagedLedgerOffloadRoleSessionName = "pulsar-s3-offload";

    // gcs config, set by service configuration or cli
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String gcsManagedLedgerOffloadRegion = null;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String gcsManagedLedgerOffloadBucket = null;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private Integer gcsManagedLedgerOffloadMaxBlockSizeInBytes = DEFAULT_GCS_MAX_BLOCK_SIZE_IN_BYTES;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private Integer gcsManagedLedgerOffloadReadBufferSizeInBytes = DEFAULT_READ_BUFFER_SIZE_IN_BYTES;
    // gcs config, set by service configuration
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String gcsManagedLedgerOffloadServiceAccountKeyFile = null;

    // file system config, set by service configuration
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String fileSystemProfilePath = null;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String fileSystemURI = null;

    // --------- new offload configurations ---------
    // they are universal configurations and could be used to `aws-s3`, `google-cloud-storage` or `azureblob`.
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String managedLedgerOffloadBucket;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String managedLedgerOffloadRegion;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private String managedLedgerOffloadServiceEndpoint;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private Integer managedLedgerOffloadMaxBlockSizeInBytes;
    @Configuration
    @JsonProperty(access = JsonProperty.Access.READ_WRITE)
    private Integer managedLedgerOffloadReadBufferSizeInBytes;

    public static OffloadPoliciesImpl create(String driver, String region, String bucket, String endpoint,
                                             String role, String roleSessionName,
                                             String credentialId, String credentialSecret,
                                             Integer maxBlockSizeInBytes, Integer readBufferSizeInBytes,
                                             Long offloadThresholdInBytes,
                                             Long offloadThresholdInSeconds,
                                             Long offloadDeletionLagInMillis,
                                             OffloadedReadPriority readPriority) {
        OffloadPoliciesImplBuilder builder = builder()
                .managedLedgerOffloadDriver(driver)
                .managedLedgerOffloadThresholdInBytes(offloadThresholdInBytes)
                .managedLedgerOffloadThresholdInSeconds(offloadThresholdInSeconds)
                .managedLedgerOffloadDeletionLagInMillis(offloadDeletionLagInMillis)
                .managedLedgerOffloadBucket(bucket)
                .managedLedgerOffloadRegion(region)
                .managedLedgerOffloadServiceEndpoint(endpoint)
                .managedLedgerOffloadMaxBlockSizeInBytes(maxBlockSizeInBytes)
                .managedLedgerOffloadReadBufferSizeInBytes(readBufferSizeInBytes)
                .managedLedgerOffloadedReadPriority(readPriority);

        if (driver.equalsIgnoreCase(DRIVER_NAMES.get(0)) || driver.equalsIgnoreCase(DRIVER_NAMES.get(1))) {
            if (role != null) {
                builder.s3ManagedLedgerOffloadRole(role);
            }
            if (roleSessionName != null) {
                builder.s3ManagedLedgerOffloadRoleSessionName(roleSessionName);
            }
            if (credentialId != null) {
                builder.s3ManagedLedgerOffloadCredentialId(credentialId);
            }
            if (credentialSecret != null) {
                builder.s3ManagedLedgerOffloadCredentialSecret(credentialSecret);
            }

            builder.s3ManagedLedgerOffloadRegion(region)
                    .s3ManagedLedgerOffloadBucket(bucket)
                    .s3ManagedLedgerOffloadServiceEndpoint(endpoint)
                    .s3ManagedLedgerOffloadMaxBlockSizeInBytes(maxBlockSizeInBytes)
                    .s3ManagedLedgerOffloadReadBufferSizeInBytes(readBufferSizeInBytes);
        } else if (driver.equalsIgnoreCase(DRIVER_NAMES.get(2))) {
            builder.gcsManagedLedgerOffloadRegion(region)
                .gcsManagedLedgerOffloadBucket(bucket)
                .gcsManagedLedgerOffloadMaxBlockSizeInBytes(maxBlockSizeInBytes)
                .gcsManagedLedgerOffloadReadBufferSizeInBytes(readBufferSizeInBytes);
        }

        return builder.build();
    }

    public static OffloadPoliciesImpl create(Properties properties) {
        OffloadPoliciesImpl data = new OffloadPoliciesImpl();
        for (Field f : CONFIGURATION_FIELDS) {
            if (properties.containsKey(f.getName())) {
                try {
                    f.setAccessible(true);
                    f.set(data, value((String) properties.get(f.getName()), f));
                } catch (Exception e) {
                    throw new IllegalArgumentException(
                            String.format("failed to initialize %s field while setting value %s",
                                    f.getName(), properties.get(f.getName())), e);
                }
            }
        }

        Map<String, String> extraConfigurations = properties.entrySet().stream()
                .filter(entry -> entry.getKey().toString().startsWith(EXTRA_CONFIG_PREFIX))
                .collect(Collectors.toMap(
                        entry -> entry.getKey().toString().replaceFirst(EXTRA_CONFIG_PREFIX, ""),
                        entry -> entry.getValue().toString()));

        data.getManagedLedgerExtraConfigurations().putAll(extraConfigurations);

        data.compatibleWithBrokerConfigFile(properties);
        return data;
    }

    public static OffloadPoliciesImplBuilder builder() {
        return new OffloadPoliciesImplBuilder();
    }

    public void compatibleWithBrokerConfigFile(Properties properties) {
        if (!properties.containsKey("managedLedgerOffloadThresholdInBytes")
                && properties.containsKey(OFFLOAD_THRESHOLD_NAME_IN_CONF_FILE)) {
            setManagedLedgerOffloadThresholdInBytes(
                    Long.parseLong(properties.getProperty(OFFLOAD_THRESHOLD_NAME_IN_CONF_FILE)));
        }

        if (!properties.containsKey("managedLedgerOffloadDeletionLagInMillis")
                && properties.containsKey(DELETION_LAG_NAME_IN_CONF_FILE)) {
            setManagedLedgerOffloadDeletionLagInMillis(
                    Long.parseLong(properties.getProperty(DELETION_LAG_NAME_IN_CONF_FILE)));
        }

        if (!properties.containsKey("managedLedgerOffloadedReadPriority")
                && properties.containsKey(DATA_READ_PRIORITY_NAME_IN_CONF_FILE)) {
            setManagedLedgerOffloadedReadPriority(
                    OffloadedReadPriority.fromString(properties.getProperty(DATA_READ_PRIORITY_NAME_IN_CONF_FILE)));
        }
    }

    public boolean driverSupported() {
        return DRIVER_NAMES.stream().anyMatch(d -> d.equalsIgnoreCase(this.managedLedgerOffloadDriver));
    }

    public static String getSupportedDriverNames() {
        return StringUtils.join(DRIVER_NAMES, ",");
    }

    public boolean isS3Driver() {
        if (managedLedgerOffloadDriver == null) {
            return false;
        }
        return managedLedgerOffloadDriver.equalsIgnoreCase(DRIVER_NAMES.get(0))
                || managedLedgerOffloadDriver.equalsIgnoreCase(DRIVER_NAMES.get(1));
    }

    public boolean isGcsDriver() {
        if (managedLedgerOffloadDriver == null) {
            return false;
        }
        return managedLedgerOffloadDriver.equalsIgnoreCase(DRIVER_NAMES.get(2));
    }

    public boolean isFileSystemDriver() {
        if (managedLedgerOffloadDriver == null) {
            return false;
        }
        return managedLedgerOffloadDriver.equalsIgnoreCase(DRIVER_NAMES.get(3));
    }

    public boolean bucketValid() {
        if (managedLedgerOffloadDriver == null) {
            return false;
        }
        if (StringUtils.isNotEmpty(managedLedgerOffloadBucket)) {
            return true;
        }
        if (isS3Driver()) {
            return StringUtils.isNotEmpty(s3ManagedLedgerOffloadBucket);
        } else if (isGcsDriver()) {
            return StringUtils.isNotEmpty(gcsManagedLedgerOffloadBucket);
        } else if (isFileSystemDriver()) {
            return true;
        }
        return false;
    }

    public Properties toProperties() {
        Properties properties = new Properties();
        for (Field f : CONFIGURATION_FIELDS) {
            try {
                f.setAccessible(true);
                if ("managedLedgerExtraConfigurations".equals(f.getName())) {
                    Map<String, String> extraConfig = (Map<String, String>) f.get(this);
                    extraConfig.forEach((key, value) -> {
                        setProperty(properties, EXTRA_CONFIG_PREFIX + key, value);
                    });
                } else {
                    setProperty(properties, f.getName(), f.get(this));
                }
            } catch (Exception e) {
                throw new IllegalArgumentException("An error occurred while processing the field: " + f.getName(), e);
            }
        }
        return properties;
    }

    private static void setProperty(Properties properties, String key, Object value) {
        if (value != null) {
            properties.setProperty(key, "" + value);
        }
    }

    @Target(ElementType.FIELD)
    @Retention(RetentionPolicy.RUNTIME)
    private @interface Configuration {

    }

    /**
     * This method is used to make a compatible with old policies.
     *
     * <p>The filed {@link Policies#offload_threshold} is primitive, so it can't be known whether it had been set.
     * In the old logic, if the field value is -1, it could be thought that the field had not been set.
     *
     * @param nsLevelPolicies  namespace level offload policies
     * @param policies namespace policies
     * @return offload policies
     */
    public static OffloadPoliciesImpl oldPoliciesCompatible(OffloadPoliciesImpl nsLevelPolicies, Policies policies) {
        if (policies == null || (policies.offload_threshold == -1 && policies.offload_threshold_in_seconds == -1
                && policies.offload_deletion_lag_ms == null)) {
            return nsLevelPolicies;
        }
        if (nsLevelPolicies == null) {
            nsLevelPolicies = new OffloadPoliciesImpl();
        }
        if (nsLevelPolicies.getManagedLedgerOffloadThresholdInBytes() == null
                && policies.offload_threshold != -1) {
            nsLevelPolicies.setManagedLedgerOffloadThresholdInBytes(policies.offload_threshold);
        }
        if (nsLevelPolicies.getManagedLedgerOffloadThresholdInSeconds() == null
                && policies.offload_threshold_in_seconds != -1) {
            nsLevelPolicies.setManagedLedgerOffloadThresholdInSeconds(policies.offload_threshold_in_seconds);
        }
        if (nsLevelPolicies.getManagedLedgerOffloadDeletionLagInMillis() == null
                && policies.offload_deletion_lag_ms != null) {
            nsLevelPolicies.setManagedLedgerOffloadDeletionLagInMillis(policies.offload_deletion_lag_ms);
        }
        return nsLevelPolicies;
    }

    /**
     * Merge different level offload policies.
     *
     * <p>policies level priority: topic > namespace > broker
     *
     * @param topicLevelPolicies topic level offload policies
     * @param nsLevelPolicies namespace level offload policies
     * @param brokerProperties broker level offload configuration
     * @return offload policies
     */
    public static OffloadPoliciesImpl mergeConfiguration(OffloadPoliciesImpl topicLevelPolicies,
                                                         OffloadPoliciesImpl nsLevelPolicies,
                                                         Properties brokerProperties) {
        try {
            boolean allConfigValuesAreNull = true;
            OffloadPoliciesImpl offloadPolicies = new OffloadPoliciesImpl();
            for (Field field : CONFIGURATION_FIELDS) {
                Object object;
                if (topicLevelPolicies != null && field.get(topicLevelPolicies) != null) {
                    object = field.get(topicLevelPolicies);
                } else if (nsLevelPolicies != null && field.get(nsLevelPolicies) != null) {
                    object = field.get(nsLevelPolicies);
                } else {
                    object = getCompatibleValue(brokerProperties, field);
                }
                if (object != null) {
                    field.set(offloadPolicies, object);
                    if (allConfigValuesAreNull) {
                        allConfigValuesAreNull = false;
                    }
                }
            }
            if (allConfigValuesAreNull) {
                return null;
            } else {
                return offloadPolicies;
            }
        } catch (Exception e) {
            log.error("Failed to merge configuration.", e);
            return null;
        }
    }

    /**
     * Make configurations of the OffloadPolicies compatible with the config file.
     *
     * <p>The names of the fields {@link OffloadPoliciesImpl#managedLedgerOffloadDeletionLagInMillis}
     * and {@link OffloadPoliciesImpl#managedLedgerOffloadThresholdInBytes} are not matched with
     * config file (broker.conf or standalone.conf).
     *
     * @param properties broker configuration properties
     * @param field filed
     * @return field value
     */
    private static Object getCompatibleValue(Properties properties, Field field) {
        Object object;
        if (field.getName().equals("managedLedgerOffloadThresholdInBytes")) {
            object = properties.getProperty("managedLedgerOffloadThresholdInBytes",
                    properties.getProperty(OFFLOAD_THRESHOLD_NAME_IN_CONF_FILE));
        } else if (field.getName().equals("managedLedgerOffloadDeletionLagInMillis")) {
            object = properties.getProperty("managedLedgerOffloadDeletionLagInMillis",
                    properties.getProperty(DELETION_LAG_NAME_IN_CONF_FILE));
        } else if (field.getName().equals("managedLedgerOffloadedReadPriority")) {
            object = properties.getProperty("managedLedgerOffloadedReadPriority",
                    properties.getProperty(DATA_READ_PRIORITY_NAME_IN_CONF_FILE));
        } else {
            object = properties.get(field.getName());
        }
        return value((String) object, field);
    }

    public static class OffloadPoliciesImplBuilder implements OffloadPolicies.Builder {
        private OffloadPoliciesImpl impl = new OffloadPoliciesImpl();

        public OffloadPoliciesImplBuilder offloadersDirectory(String offloadersDirectory) {
            impl.offloadersDirectory = offloadersDirectory;
            return this;
        }

        public OffloadPoliciesImplBuilder managedLedgerOffloadDriver(String managedLedgerOffloadDriver) {
            impl.managedLedgerOffloadDriver = managedLedgerOffloadDriver;
            return this;
        }

        public OffloadPoliciesImplBuilder managedLedgerOffloadMaxThreads(Integer managedLedgerOffloadMaxThreads) {
            impl.managedLedgerOffloadMaxThreads = managedLedgerOffloadMaxThreads;
            return this;
        }

        public OffloadPoliciesImplBuilder managedLedgerOffloadReadThreads(Integer managedLedgerOffloadReadThreads) {
            impl.managedLedgerOffloadReadThreads = managedLedgerOffloadReadThreads;
            return this;
        }

        public OffloadPoliciesImplBuilder managedLedgerOffloadPrefetchRounds(
                Integer managedLedgerOffloadPrefetchRounds) {
            impl.managedLedgerOffloadPrefetchRounds = managedLedgerOffloadPrefetchRounds;
            return this;
        }

        public OffloadPoliciesImplBuilder managedLedgerOffloadThresholdInBytes(
                Long managedLedgerOffloadThresholdInBytes) {
            impl.managedLedgerOffloadThresholdInBytes = managedLedgerOffloadThresholdInBytes;
            return this;
        }

        @Override
        public OffloadPoliciesImplBuilder managedLedgerOffloadThresholdInSeconds(
                Long managedLedgerOffloadThresholdInSeconds) {
            impl.managedLedgerOffloadThresholdInSeconds = managedLedgerOffloadThresholdInSeconds;
            return this;
        }

        public OffloadPoliciesImplBuilder managedLedgerOffloadDeletionLagInMillis(
                Long managedLedgerOffloadDeletionLagInMillis) {
            impl.managedLedgerOffloadDeletionLagInMillis = managedLedgerOffloadDeletionLagInMillis;
            return this;
        }

        public OffloadPoliciesImplBuilder managedLedgerOffloadedReadPriority(
                OffloadedReadPriority managedLedgerOffloadedReadPriority) {
            impl.managedLedgerOffloadedReadPriority = managedLedgerOffloadedReadPriority;
            return this;
        }

        public OffloadPoliciesImplBuilder s3ManagedLedgerOffloadRegion(String s3ManagedLedgerOffloadRegion) {
            impl.s3ManagedLedgerOffloadRegion = s3ManagedLedgerOffloadRegion;
            return this;
        }

        public OffloadPoliciesImplBuilder s3ManagedLedgerOffloadBucket(String s3ManagedLedgerOffloadBucket) {
            impl.s3ManagedLedgerOffloadBucket = s3ManagedLedgerOffloadBucket;
            return this;
        }

        public OffloadPoliciesImplBuilder s3ManagedLedgerOffloadServiceEndpoint(
                String s3ManagedLedgerOffloadServiceEndpoint) {
            impl.s3ManagedLedgerOffloadServiceEndpoint = s3ManagedLedgerOffloadServiceEndpoint;
            return this;
        }

        public OffloadPoliciesImplBuilder s3ManagedLedgerOffloadMaxBlockSizeInBytes(
                Integer s3ManagedLedgerOffloadMaxBlockSizeInBytes) {
            impl.s3ManagedLedgerOffloadMaxBlockSizeInBytes = s3ManagedLedgerOffloadMaxBlockSizeInBytes;
            return this;
        }

        public OffloadPoliciesImplBuilder s3ManagedLedgerOffloadReadBufferSizeInBytes(
                Integer s3ManagedLedgerOffloadReadBufferSizeInBytes) {
            impl.s3ManagedLedgerOffloadReadBufferSizeInBytes = s3ManagedLedgerOffloadReadBufferSizeInBytes;
            return this;
        }

        public OffloadPoliciesImplBuilder s3ManagedLedgerOffloadCredentialId(
                String s3ManagedLedgerOffloadCredentialId) {
            impl.s3ManagedLedgerOffloadCredentialId = s3ManagedLedgerOffloadCredentialId;
            return this;
        }

        public OffloadPoliciesImplBuilder s3ManagedLedgerOffloadCredentialSecret(
                String s3ManagedLedgerOffloadCredentialSecret) {
            impl.s3ManagedLedgerOffloadCredentialSecret = s3ManagedLedgerOffloadCredentialSecret;
            return this;
        }

        public OffloadPoliciesImplBuilder s3ManagedLedgerOffloadRole(String s3ManagedLedgerOffloadRole) {
            impl.s3ManagedLedgerOffloadRole = s3ManagedLedgerOffloadRole;
            return this;
        }

        @Override
        public Builder setS3ManagedLedgerOffloadRoleSessionName(String s3ManagedLedgerOffloadRoleSessionName) {
            impl.s3ManagedLedgerOffloadRoleSessionName = s3ManagedLedgerOffloadRoleSessionName;
            return this;
        }

        public OffloadPoliciesImplBuilder s3ManagedLedgerOffloadRoleSessionName(
                String s3ManagedLedgerOffloadRoleSessionName) {
            impl.s3ManagedLedgerOffloadRoleSessionName = s3ManagedLedgerOffloadRoleSessionName;
            return this;
        }

        public OffloadPoliciesImplBuilder gcsManagedLedgerOffloadRegion(String gcsManagedLedgerOffloadRegion) {
            impl.gcsManagedLedgerOffloadRegion = gcsManagedLedgerOffloadRegion;
            return this;
        }

        public OffloadPoliciesImplBuilder gcsManagedLedgerOffloadBucket(String gcsManagedLedgerOffloadBucket) {
            impl.gcsManagedLedgerOffloadBucket = gcsManagedLedgerOffloadBucket;
            return this;
        }

        public OffloadPoliciesImplBuilder gcsManagedLedgerOffloadMaxBlockSizeInBytes(
                Integer gcsManagedLedgerOffloadMaxBlockSizeInBytes) {
            impl.gcsManagedLedgerOffloadMaxBlockSizeInBytes = gcsManagedLedgerOffloadMaxBlockSizeInBytes;
            return this;
        }

        public OffloadPoliciesImplBuilder gcsManagedLedgerOffloadReadBufferSizeInBytes(
                Integer gcsManagedLedgerOffloadReadBufferSizeInBytes) {
            impl.gcsManagedLedgerOffloadReadBufferSizeInBytes = gcsManagedLedgerOffloadReadBufferSizeInBytes;
            return this;
        }

        public OffloadPoliciesImplBuilder gcsManagedLedgerOffloadServiceAccountKeyFile(
                String gcsManagedLedgerOffloadServiceAccountKeyFile) {
            impl.gcsManagedLedgerOffloadServiceAccountKeyFile = gcsManagedLedgerOffloadServiceAccountKeyFile;
            return this;
        }

        public OffloadPoliciesImplBuilder fileSystemProfilePath(String fileSystemProfilePath) {
            impl.fileSystemProfilePath = fileSystemProfilePath;
            return this;
        }

        public OffloadPoliciesImplBuilder fileSystemURI(String fileSystemURI) {
            impl.fileSystemURI = fileSystemURI;
            return this;
        }

        public OffloadPoliciesImplBuilder managedLedgerOffloadBucket(String managedLedgerOffloadBucket) {
            impl.managedLedgerOffloadBucket = managedLedgerOffloadBucket;
            return this;
        }

        public OffloadPoliciesImplBuilder managedLedgerOffloadRegion(String managedLedgerOffloadRegion) {
            impl.managedLedgerOffloadRegion = managedLedgerOffloadRegion;
            return this;
        }

        public OffloadPoliciesImplBuilder managedLedgerOffloadServiceEndpoint(
                String managedLedgerOffloadServiceEndpoint) {
            impl.managedLedgerOffloadServiceEndpoint = managedLedgerOffloadServiceEndpoint;
            return this;
        }

        public OffloadPoliciesImplBuilder managedLedgerOffloadMaxBlockSizeInBytes(
                Integer managedLedgerOffloadMaxBlockSizeInBytes) {
            impl.managedLedgerOffloadMaxBlockSizeInBytes = managedLedgerOffloadMaxBlockSizeInBytes;
            return this;
        }

        public OffloadPoliciesImplBuilder managedLedgerOffloadReadBufferSizeInBytes(
                Integer managedLedgerOffloadReadBufferSizeInBytes) {
            impl.managedLedgerOffloadReadBufferSizeInBytes = managedLedgerOffloadReadBufferSizeInBytes;
            return this;
        }

        public OffloadPoliciesImpl build() {
            return impl;
        }
    }
}
