// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.

package com.azure.cosmos.implementation;

import com.azure.core.util.CoreUtils;

import java.util.concurrent.atomic.AtomicReference;

/**
 * Used internally. HTTP constants in the Azure Cosmos DB database service Java
 * SDK.
 */
public class HttpConstants {
    public static class HttpMethods {
        public static final String GET = "GET";
        public static final String POST = "POST";
        public static final String PUT = "PUT";
        public static final String DELETE = "DELETE";
        public static final String HEAD = "HEAD";
        public static final String OPTIONS = "OPTIONS";
        public static final String PATCH = "PATCH";
    }

    public static class QueryStrings {
        public static final String URL = "$resolveFor";
        public static final String FILTER = "$filter";
        public static final String PARTITION_KEY_RANGE_IDS = "$partitionKeyRangeIds";
    }

    public static class HttpHeaders {
        public static final String AUTHORIZATION = "authorization";
        public static final String E_TAG = "etag";
        public static final String METHOD_OVERRIDE = "X-HTTP-Method";
        public static final String SLUG = "Slug";
        public static final String CONTENT_TYPE = "Content-Type";
        public static final String LAST_MODIFIED = "Last-Modified";
        public static final String CONTENT_ENCODING = "Content-Encoding";
        public static final String CHARACTER_SET = "CharacterSet";
        public static final String USER_AGENT = "User-Agent";
        public static final String IF_MODIFIED_SINCE = "If-Modified-Since";
        public static final String IF_MATCH = "If-Match";
        public static final String IF_NONE_MATCH = "If-None-Match";
        public static final String CONTENT_LENGTH = "Content-Length";
        public static final String ACCEPT_ENCODING = "Accept-Encoding";
        public static final String KEEP_ALIVE = "Keep-Alive";
        public static final String CONNECTION = "Connection";
        public static final String CACHE_CONTROL = "Cache-Control";
        public static final String TRANSFER_ENCODING = "Transfer-Encoding";
        public static final String CONTENT_LANGUAGE = "Content-Language";
        public static final String CONTENT_LOCATION = "Content-Location";
        public static final String CONTENT_MD5 = "Content-Md5";
        public static final String CONTENT_RANGE = "Content-RANGE";
        public static final String ACCEPT = "Accept";
        public static final String ACCEPT_CHARSET = "Accept-Charset";
        public static final String ACCEPT_LANGUAGE = "Accept-Language";
        public static final String IF_RANGE = "If-RANGE";
        public static final String IF_UNMODIFIED_SINCE = "If-Unmodified-Since";
        public static final String MAX_FORWARDS = "Max-Forwards";
        public static final String PROXY_AUTHORIZATION = "Proxy-Authorization";
        public static final String ACCEPT_RANGES = "Accept-Ranges";
        public static final String PROXY_AUTHENTICATE = "Proxy-Authenticate";
        public static final String RETRY_AFTER = "Retry-After";
        public static final String SET_COOKIE = "Set-Cookie";
        public static final String WWW_AUTHENTICATE = "Www-Authenticate";
        public static final String ORIGIN = "Origin";
        public static final String HOST = "Host";
        public static final String ACCESS_CONTROL_ALLOW_ORIGIN = "Access-Control-Allow-Origin";
        public static final String ACCESS_CONTROL_ALLOW_HEADERS = "Access-Control-Allow-Headers";
        public static final String KEY_VALUE_ENCODING_FORMAT = "application/x-www-form-urlencoded";
        public static final String WRAP_ASSERTION_FORMAT = "wrap_assertion_format";
        public static final String WRAP_ASSERTION = "wrap_assertion";
        public static final String WRAP_SCOPE = "wrap_scope";
        public static final String SIMPLE_TOKEN = "SWT";
        public static final String HTTP_DATE = "date";
        public static final String PREFER = "Prefer";
        public static final String LOCATION = "Location";
        public static final String REFERER = "referer";

        // Query
        public static final String QUERY = "x-ms-documentdb-query";
        public static final String IS_QUERY = "x-ms-documentdb-isquery";
        public static final String ENABLE_CROSS_PARTITION_QUERY = "x-ms-documentdb-query-enablecrosspartition";
        public static final String PARALLELIZE_CROSS_PARTITION_QUERY = "x-ms-documentdb-query-parallelizecrosspartitionquery";
        public static final String IS_QUERY_PLAN_REQUEST = "x-ms-cosmos-is-query-plan-request";
        public static final String SUPPORTED_QUERY_FEATURES = "x-ms-cosmos-supported-query-features";
        public static final String QUERY_VERSION = "x-ms-cosmos-query-version";
        public static final String CORRELATED_ACTIVITY_ID = "x-ms-cosmos-correlated-activityid";

        // Our custom DocDB headers
        public static final String CONTINUATION = "x-ms-continuation";
        public static final String PAGE_SIZE = "x-ms-max-item-count";
        public static final String RESPONSE_CONTINUATION_TOKEN_LIMIT_IN_KB = "x-ms-documentdb-responsecontinuationtokenlimitinkb";

        // Request sender generated. Simply echoed by backend.
        public static final String ACTIVITY_ID = "x-ms-activity-id";
        public static final String PRE_TRIGGER_INCLUDE = "x-ms-documentdb-pre-trigger-include";
        public static final String PRE_TRIGGER_EXCLUDE = "x-ms-documentdb-pre-trigger-exclude";
        public static final String POST_TRIGGER_INCLUDE = "x-ms-documentdb-post-trigger-include";
        public static final String POST_TRIGGER_EXCLUDE = "x-ms-documentdb-post-trigger-exclude";
        public static final String INDEXING_DIRECTIVE = "x-ms-indexing-directive";
        public static final String SESSION_TOKEN = "x-ms-session-token";
        public static final String CONSISTENCY_LEVEL = "x-ms-consistency-level";
        public static final String X_DATE = "x-ms-date";
        public static final String COLLECTION_PARTITION_INFO = "x-ms-collection-partition-info";
        public static final String COLLECTION_SERVICE_INFO = "x-ms-collection-service-info";
        public static final String RETRY_AFTER_IN_MILLISECONDS = "x-ms-retry-after-ms";
        public static final String IS_FEED_UNFILTERED = "x-ms-is-feed-unfiltered";
        public static final String RESOURCE_TOKEN_EXPIRY = "x-ms-documentdb-expiry-seconds";
        public static final String ENABLE_SCAN_IN_QUERY = "x-ms-documentdb-query-enable-scan";
        public static final String EMIT_VERBOSE_TRACES_IN_QUERY = "x-ms-documentdb-query-emit-traces";

        // target lsn for head requests
        public static final String TARGET_LSN = "x-ms-target-lsn";
        public static final String TARGET_GLOBAL_COMMITTED_LSN = "x-ms-target-global-committed-lsn";

        // Request validation
        public static final String REQUEST_VALIDATION_FAILURE = "x-ms-request-validation-failure";

        public static final String WRITE_REQUEST_TRIGGER_ADDRESS_REFRESH = "x-ms-write-request-trigger-refresh";

        // Quota Info
        public static final String MAX_RESOURCE_QUOTA = "x-ms-resource-quota";
        public static final String CURRENT_RESOURCE_QUOTA_USAGE = "x-ms-resource-usage";
        public static final String MAX_MEDIA_STORAGE_USAGE_IN_MB = "x-ms-max-media-storage-usage-mb";

        // Usage Info
        public static final String REQUEST_CHARGE = "x-ms-request-charge";
        public static final String CURRENT_MEDIA_STORAGE_USAGE_IN_MB = "x-ms-media-storage-usage-mb";
        public static final String DATABASE_ACCOUNT_CONSUMED_DOCUMENT_STORAGE_IN_MB = "x-ms-databaseaccount-consumed-mb";
        public static final String DATABASE_ACCOUNT_RESERVED_DOCUMENT_STORAGE_IN_MB = "x-ms-databaseaccount-reserved-mb";
        public static final String DATABASE_ACCOUNT_PROVISIONED_DOCUMENT_STORAGE_IN_MB = "x-ms-databaseaccount-provisioned-mb";

        // Address related headers.
        public static final String FORCE_REFRESH = "x-ms-force-refresh";
        public static final String FORCE_COLLECTION_ROUTING_MAP_REFRESH = "x-ms-collectionroutingmap-refresh";
        public static final String ITEM_COUNT = "x-ms-item-count";
        public static final String NEW_RESOURCE_ID = "x-ms-new-resource-id";
        public static final String USE_MASTER_COLLECTION_RESOLVER = "x-ms-use-master-collection-resolver";

        // Admin Headers
        public static final String FULL_UPGRADE = "x-ms-force-full-upgrade";
        public static final String ONLY_UPGRADE_SYSTEM_APPLICATIONS = "x-ms-only-upgrade-system-applications";
        public static final String ONLY_UPGRADE_NON_SYSTEM_APPLICATIONS = "x-ms-only-upgrade-non-system-applications";
        public static final String UPGRADE_FABRIC_RING_CODE_AND_CONFIG = "x-ms-upgrade-fabric-code-config";
        public static final String IGNORE_IN_PROGRESS_UPGRADE = "x-ms-ignore-inprogress-upgrade";
        public static final String UPGRADE_VERIFICATION_KIND = "x-ms-upgrade-verification-kind";
        public static final String IS_CANARY = "x-ms-iscanary";
        public static final String FORCE_DELETE = "x-ms-force-delete";

        // Version headers and values
        public static final String VERSION = "x-ms-version";
        public static final String SCHEMA_VERSION = "x-ms-schemaversion";
        public static final String SERVER_VERSION = "x-ms-serviceversion";
        public static final String GATEWAY_VERSION = "x-ms-gatewayversion";

        // RDFE Resource Provider headers
        public static final String OCP_RESOURCE_PROVIDER_REGISTERED_URI = "ocp-resourceprovider-registered-uri";

        // For Document service management operations only. This is in
        // essence a 'handle' to (long running) operations.
        public static final String REQUEST_ID = "x-ms-request-id";

        // Object returning this determines what constitutes state and what
        // last state change means. For replica, it is the last role change.
        public static final String LAST_STATE_CHANGE_UTC = "x-ms-last-state-change-utc";

        // CSM specific headers
        // Client-request-id: Optional caller-specified request ID, in the form
        // of a GUID
        public static final String CLIENT_REQUEST_ID = "x-ms-client-request-id";

        // Offer header
        public static final String OFFER_TYPE = "x-ms-offer-type";
        public static final String OFFER_THROUGHPUT = "x-ms-offer-throughput";
        public static final String OFFER_IS_RU_PER_MINUTE_THROUGHPUT_ENABLED = "x-ms-offer-is-ru-per-minute-throughput-enabled";
        public static final String OFFER_MIN_THROUGHPUT = "x-ms-cosmos-min-throughput";
        public static final String OFFER_AUTOPILOT_SETTINGS = "x-ms-cosmos-offer-autopilot-settings";
        public static final String OFFER_REPLACE_PENDING = "x-ms-offer-replace-pending";

        // Upsert header
        public static final String IS_UPSERT = "x-ms-documentdb-is-upsert";

        // Index progress headers
        public static final String INDEX_TRANSFORMATION_PROGRESS = "x-ms-documentdb-collection-index-transformation-progress";
        public static final String LAZY_INDEXING_PROGRESS = "x-ms-documentdb-collection-lazy-indexing-progress";

        // Owner name
        public static final String OWNER_FULL_NAME = "x-ms-alt-content-path";

        // Owner ID used for name based request in session token.
        public static final String OWNER_ID = "x-ms-content-path";

        // Partition headers
        public static final String PARTITION_KEY = "x-ms-documentdb-partitionkey";
        public static final String PARTITION_KEY_RANGE_ID = "x-ms-documentdb-partitionkeyrangeid";

        // Error response sub status code
        public static final String SUB_STATUS = "x-ms-substatus";

        public static final String LSN = "lsn";

        // CUSTOM DocDB JavaScript logging headers
        public static final String SCRIPT_ENABLE_LOGGING = "x-ms-documentdb-script-enable-logging";
        public static final String SCRIPT_LOG_RESULTS = "x-ms-documentdb-script-log-results";

        // Collection quota
        public static final String POPULATE_QUOTA_INFO = "x-ms-documentdb-populatequotainfo";

        // ChangeFeed
        public static final String A_IM = "A-IM";
        public static final String ALLOW_TENTATIVE_WRITES = "x-ms-cosmos-allow-tentative-writes";
        public static final String CHANGE_FEED_WIRE_FORMAT_VERSION = "x-ms-cosmos-changefeed-wire-format-version";

        // These properties were added to support RNTBD and they've been added here to
        // reduce merge conflicts

        public static final String CAN_CHARGE = "x-ms-cancharge";
        public static final String CAN_OFFER_REPLACE_COMPLETE = "x-ms-can-offer-replace-complete";
        public static final String CAN_THROTTLE = "x-ms-canthrottle";
        public static final String CLIENT_RETRY_ATTEMPT_COUNT = "x-ms-client-retry-attempt-count";
        public static final String COLLECTION_INDEX_TRANSFORMATION_PROGRESS = "x-ms-documentdb-collection-index-transformation-progress";
        public static final String COLLECTION_LAZY_INDEXING_PROGRESS = "x-ms-documentdb-collection-lazy-indexing-progress";
        public static final String COLLECTION_REMOTE_STORAGE_SECURITY_IDENTIFIER = "x-ms-collection-security-identifier";
        public static final String CONTENT_SERIALIZATION_FORMAT = "x-ms-documentdb-content-serialization-format";
        public static final String DISABLE_RNTBD_CHANNEL = "x-ms-disable-rntbd-channel";
        public static final String DISABLE_RU_PER_MINUTE_USAGE = "x-ms-documentdb-disable-ru-per-minute-usage";
        public static final String ENABLE_LOGGING = "x-ms-documentdb-script-enable-logging";
        public static final String ENABLE_LOW_PRECISION_ORDER_BY = "x-ms-documentdb-query-enable-low-precision-order-by";
        public static final String END_EPK = "x-ms-end-epk";
        public static final String END_ID = "x-ms-end-id";
        public static final String ENUMERATION_DIRECTION = "x-ms-enumeration-direction";
        public static final String FILTER_BY_SCHEMA_RESOURCE_ID = "x-ms-documentdb-filterby-schema-rid";
        public static final String FORCE_QUERY_SCAN = "x-ms-documentdb-force-query-scan";
        public static final String GATEWAY_SIGNATURE = "x-ms-gateway-signature";
        public static final String IS_AUTO_SCALE_REQUEST = "x-ms-is-auto-scale";
        public static final String IS_READ_ONLY_SCRIPT = "x-ms-is-readonly-script";
        public static final String LOG_RESULTS = "x-ms-documentdb-script-log-results";
        public static final String MIGRATE_COLLECTION_DIRECTIVE = "x-ms-migratecollection-directive";
        public static final String POPULATE_COLLECTION_THROUGHPUT_INFO = "x-ms-documentdb-populatecollectionthroughputinfo";
        public static final String POPULATE_PARTITION_STATISTICS = "x-ms-documentdb-populatepartitionstatistics";
        public static final String POPULATE_QUERY_METRICS = "x-ms-documentdb-populatequerymetrics";
        public static final String PROFILE_REQUEST = "x-ms-profile-request";
        public static final String READ_FEED_KEY_TYPE = "x-ms-read-key-type";
        public static final String REMAINING_TIME_IN_MS_ON_CLIENT_REQUEST = "x-ms-remaining-time-in-ms-on-client";
        public static final String RESTORE_METADATA_FILTER = "x-ms-restore-metadata-filter";
        public static final String SHARED_OFFER_THROUGHPUT = "x-ms-cosmos-shared-offer-throughput";
        public static final String START_EPK = "x-ms-start-epk";
        public static final String START_ID = "x-ms-start-id";
        public static final String SUPPORT_SPATIAL_LEGACY_COORDINATES = "x-ms-documentdb-supportspatiallegacycoordinates";
        public static final String TRANSPORT_REQUEST_ID = "x-ms-transport-request-id";
        public static final String USE_POLYGONS_SMALLER_THAN_AHEMISPHERE = "x-ms-documentdb-usepolygonssmallerthanahemisphere";
        public static final String API_TYPE = "x-ms-cosmos-apitype";
        public static final String QUERY_METRICS = "x-ms-documentdb-query-metrics";
        public static final String POPULATE_INDEX_METRICS = "x-ms-cosmos-populateindexmetrics";
        public static final String INDEX_UTILIZATION = "x-ms-cosmos-index-utilization";
        public static final String QUERY_EXECUTION_INFO = "x-ms-cosmos-query-execution-info";

        // Batch operations
        public static final String IS_BATCH_ATOMIC = "x-ms-cosmos-batch-atomic";
        public static final String IS_BATCH_ORDERED = "x-ms-cosmos-batch-ordered";
        public static final String IS_BATCH_REQUEST = "x-ms-cosmos-is-batch-request";
        public static final String SHOULD_BATCH_CONTINUE_ON_ERROR = "x-ms-cosmos-batch-continue-on-error";

        // Client telemetry header
        public static final String DATABASE_ACCOUNT_NAME = "x-ms-databaseaccount-name";
        public static final String ENVIRONMENT_NAME = "x-ms-environment-name";

        // Backend request duration header
        public static final String BACKEND_REQUEST_DURATION_MILLISECONDS = "x-ms-request-duration-ms";

        // Dedicated Gateway Headers
        public static final String DEDICATED_GATEWAY_PER_REQUEST_CACHE_STALENESS = "x-ms-dedicatedgateway-max-age";

        // Client Encryption Headers
        public static final String IS_CLIENT_ENCRYPTED_HEADER = "x-ms-cosmos-is-client-encrypted";
        public static final String INTENDED_COLLECTION_RID_HEADER = "x-ms-cosmos-intended-collection-rid";

        // SDK supported capacities headers
        public static final String SDK_SUPPORTED_CAPABILITIES = "x-ms-cosmos-sdk-supportedcapabilities";

        // Priority Level for throttling
        public static final String PRIORITY_LEVEL = "x-ms-cosmos-priority-level";
    }

    public static class A_IMHeaderValues {
        public static final String INCREMENTAL_FEED = "Incremental Feed";
        public static final String FULL_FIDELITY_FEED = "Full-Fidelity Feed";
    }

    public static class SDKSupportedCapabilities {
        private static final long NONE = 0; // 0
        private static final long PARTITION_MERGE = 1; // 1 << 0

        private static final long CHANGE_FEED_WITH_START_TIME_POST_MERGE = 2; // 1 << 1

        public static final String SUPPORTED_CAPABILITIES;
        public static final String SUPPORTED_CAPABILITIES_NONE;
        static {
            SUPPORTED_CAPABILITIES = String.valueOf(PARTITION_MERGE);
            SUPPORTED_CAPABILITIES_NONE = String.valueOf(NONE);
        }
    }

    public static class Versions {
        public static final String CURRENT_VERSION = "2020-07-15";
        public static final String QUERY_VERSION = "1.0";
        public static final String AZURE_COSMOS_PROPERTIES_FILE_NAME = "azure-cosmos.properties";

        private static boolean SDK_VERSION_SNAPSHOT_INSTEAD_OF_BETA = false;

        public static final String SDK_NAME = "cosmos";

        private static final String SDK_VERSION_RAW = CoreUtils.getProperties(AZURE_COSMOS_PROPERTIES_FILE_NAME).get("version");
        private static final AtomicReference<String> SDK_VERSION_SNAPSHOT_INSTEAD_OF_BETA_CACHED =
            new AtomicReference<String>(null);

        public static String getSdkVersion() {
            return SDK_VERSION_SNAPSHOT_INSTEAD_OF_BETA ?
                getSdkVersionWithSnapshotInsteadOfBeta() :  SDK_VERSION_RAW;
        }

        public static void useSnapshotInsteadOfBeta() {
            SDK_VERSION_SNAPSHOT_INSTEAD_OF_BETA = true;
        }

        public static void resetSnapshotInsteadOfBeta() {
            SDK_VERSION_SNAPSHOT_INSTEAD_OF_BETA = false;
        }

        private static String getSdkVersionWithSnapshotInsteadOfBeta() {
            String snapshot = SDK_VERSION_SNAPSHOT_INSTEAD_OF_BETA_CACHED.get();

            if (snapshot != null) {
                return snapshot;
            }

            String newPolishedVersion = SDK_VERSION_RAW.replaceAll("(?i)beta", "snapshot");
            if (SDK_VERSION_SNAPSHOT_INSTEAD_OF_BETA_CACHED.compareAndSet(null, newPolishedVersion)) {
                return newPolishedVersion;
            } else {
                return SDK_VERSION_SNAPSHOT_INSTEAD_OF_BETA_CACHED.get();
            }
        }
    }

    public static class ChangeFeedWireFormatVersions {
        public static final String SEPARATE_METADATA_WITH_CRTS = "2021-09-15";
    }

    public static class StatusCodes {
        public static final int OK = 200;
        public static final int CREATED = 201;
        public static final int NO_CONTENT = 204;
        public static final int NOT_MODIFIED = 304;
        // Success
        public static final int MINIMUM_SUCCESS_STATUSCODE = 200;
        public static final int MAXIMUM_SUCCESS_STATUSCODE = 299;
        // Client error
        public static final int MINIMUM_STATUSCODE_AS_ERROR_GATEWAY = 400;
        public static final int BADREQUEST = 400;
        public static final int UNAUTHORIZED = 401;
        public static final int FORBIDDEN = 403;
        public static final int NOTFOUND = 404;
        public static final int METHOD_NOT_ALLOWED = 405;
        public static final int REQUEST_TIMEOUT = 408;
        public static final int CONFLICT = 409;
        public static final int GONE = 410;
        public static final int PRECONDITION_FAILED = 412;
        public static final int REQUEST_ENTITY_TOO_LARGE = 413;
        public static final int LOCKED = 423;
        public static final int TOO_MANY_REQUESTS = 429;
        public static final int RETRY_WITH = 449;

        public static final int SERVICE_UNAVAILABLE = 503;
        public static final int INTERNAL_SERVER_ERROR = 500;
    }

    public static class SubStatusCodes {
        // Unknown SubStatus Code
        public static final int UNKNOWN = 0;

        // 400: Bad Request substatus
        public static final int PARTITION_KEY_MISMATCH = 1001;
        public static final int CROSS_PARTITION_QUERY_NOT_SERVABLE = 1004;

        // 410: StatusCodeType_Gone: substatus
        // Merge or split share the same status code and subStatusCode
        public static final int NAME_CACHE_IS_STALE = 1000;
        public static final int PARTITION_KEY_RANGE_GONE = 1002;
        public static final int COMPLETING_SPLIT_OR_MERGE = 1007;
        public static final int COMPLETING_PARTITION_MIGRATION = 1008;

        // 403: Forbidden substatus
        public static final int FORBIDDEN_WRITEFORBIDDEN = 3;
        public static final int DATABASE_ACCOUNT_NOTFOUND = 1008;

        // 404: LSN in session token is higher
        public static final int READ_SESSION_NOT_AVAILABLE = 1002;
        public static final int OWNER_RESOURCE_NOT_EXISTS = 1003;

        public static final int INCORRECT_CONTAINER_RID_SUB_STATUS = 1024;

        // SDK Codes - Java specific clinet-side substatus codes
        // IMPORTANT - whenever possible rather use consistency substaus codes that .Net SDK also uses
        // 20000-20999 - consistent client side sdk status codes
        // 21000-21999 - consistent service sdk status codes

        // Client generated gateway network error substatus
        public static final int GATEWAY_ENDPOINT_UNAVAILABLE = 10001;

        // Client generated gateway network error on ReadTimeoutException
        public static final int GATEWAY_ENDPOINT_READ_TIMEOUT = 10002;

        // Client generated request rate too large exception
        public static final int THROUGHPUT_CONTROL_REQUEST_RATE_TOO_LARGE = 10003;

        // Client generated offer not configured exception
        public static final int OFFER_NOT_CONFIGURED = 10004;

        // Client generated request rate too large exception
        public static final int THROUGHPUT_CONTROL_BULK_REQUEST_RATE_TOO_LARGE = 10005;

        public static final int USER_REQUEST_RATE_TOO_LARGE = 3200;

        //SDK Codes(Client)
        // IMPORTANT - whenever possible use consistency substaus codes that .Net SDK also uses
        public static final int TRANSPORT_GENERATED_410 = 20001;
        public static final int TIMEOUT_GENERATED_410 = 20002;
        // Client generated operation timeout exception
        public static final int CLIENT_OPERATION_TIMEOUT = 20008;

        //SDK Codes (Server)
        // IMPORTANT - whenever possible use consistency substaus codes that .Net SDK also uses
        public static final int NAME_CACHE_IS_STALE_EXCEEDED_RETRY_LIMIT = 21001;
        public static final int PARTITION_KEY_RANGE_GONE_EXCEEDED_RETRY_LIMIT = 21002;
        public static final int COMPLETING_SPLIT_EXCEEDED_RETRY_LIMIT = 21003;
        public static final int COMPLETING_PARTITION_MIGRATION_EXCEEDED_RETRY_LIMIT = 21004;
        public static final int SERVER_GENERATED_410 = 21005;
        public static final int GLOBAL_STRONG_WRITE_BARRIER_NOT_MET = 21006;
        public static final int READ_QUORUM_NOT_MET = 21007;
        public static final int SERVER_GENERATED_503 = 21008;
        public static final int NO_VALID_STORE_RESPONSE = 21009;
        public static final int SERVER_GENERATED_408 = 21010;

    }

    public static class HeaderValues {
        public static final String NO_CACHE = "no-cache";
        public static final String PREFER_RETURN_MINIMAL = "return=minimal";
        public static final String IF_NONE_MATCH_ALL = "*";
    }
}
