2019-01-06 13:14:45 -06:00

508 lines
22 KiB
JavaScript

/**
* Copyright 2016, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* Google API Extensions
*/
'use strict';
Object.defineProperty(exports, "__esModule", { value: true });
/**
* Encapsulates the overridable settings for a particular API call.
*
* ``CallOptions`` is an optional arg for all GAX API calls. It is used to
* configure the settings of a specific API call.
*
* When provided, its values override the GAX service defaults for that
* particular call.
*
* Typically the API clients will accept this as the second to the last
* argument. See the examples below.
* @typedef {Object} CallOptions
* @property {number=} timeout - The client-side timeout for API calls.
* @property {RetryOptions=} retry - determines whether and how to retry
* on transient errors. When set to null, the call will not retry.
* @property {boolean=} autoPaginate - If set to false and the call is
* configured for paged iteration, page unrolling is not performed, instead
* the callback will be called with the response object.
* @property {Object=} pageToken - If set and the call is configured for
* paged iteration, paged iteration is not performed and requested with this
* pageToken.
* @property {number} maxResults - If set and the call is configured for
* paged iteration, the call will stop when the number of response elements
* reaches to the specified size. By default, it will unroll the page to
* the end of the list.
* @property {boolean=} isBundling - If set to false and the call is configured
* for bundling, bundling is not performed.
* @property {BackoffSettings=} longrunning - BackoffSettings used for polling.
* @property {Function=} promise - A constructor for a promise that implements the ES6
* specification of promise which will be used to create promises. If not
* provided, native promises will be used.
* @example
* // suppress bundling for bundled method.
* api.bundlingMethod(
* param, {optParam: aValue, isBundling: false}, function(err, response) {
* // handle response.
* });
* @example
* // suppress streaming for page-streaming method.
* api.pageStreamingMethod(
* param, {optParam: aValue, autoPaginate: false}, function(err, page) {
* // not returning a stream, but callback is called with the paged response.
* });
*/
/**
* Per-call configurable settings for retrying upon transient failure.
* @typedef {Object} RetryOptions
* @property {String[]} retryCodes
* @property {BackoffSettings} backoffSettings
*/
var RetryOptions = /** @class */ (function () {
function RetryOptions(retryCodes, backoffSettings) {
this.retryCodes = retryCodes;
this.backoffSettings = backoffSettings;
}
return RetryOptions;
}());
exports.RetryOptions = RetryOptions;
var CallSettings = /** @class */ (function () {
/**
* @param {Object} settings - An object containing parameters of this settings.
* @param {number} settings.timeout - The client-side timeout for API calls.
* This parameter is ignored for retrying calls.
* @param {RetryOptions} settings.retry - The configuration for retrying upon
* transient error. If set to null, this call will not retry.
* @param {boolean} settings.autoPaginate - If there is no `pageDescriptor`,
* this attrbute has no meaning. Otherwise, determines whether a page
* streamed response should make the page structure transparent to the user by
* flattening the repeated field in the returned generator.
* @param {number} settings.pageToken - If there is no `pageDescriptor`,
* this attribute has no meaning. Otherwise, determines the page token used
* in the page streaming request.
* @param {Object} settings.otherArgs - Additional arguments to be passed to
* the API calls.
* @param {Function=} settings.promise - A constructor for a promise that
* implements the ES6 specification of promise. If not provided, native
* promises will be used.
*
* @constructor
*/
function CallSettings(settings) {
settings = settings || {};
this.timeout = settings.timeout || 30 * 1000;
this.retry = settings.retry;
this.autoPaginate =
'autoPaginate' in settings ? settings.autoPaginate : true;
this.pageToken = settings.pageToken;
this.maxResults = settings.maxResults;
this.otherArgs = settings.otherArgs || {};
this.bundleOptions = settings.bundleOptions;
this.isBundling = 'isBundling' in settings ? settings.isBundling : true;
this.longrunning = 'longrunning' in settings ? settings.longrunning : null;
this.promise = 'promise' in settings ? settings.promise : Promise;
}
/**
* Returns a new CallSettings merged from this and a CallOptions object.
*
* @param {CallOptions} options - an instance whose values override
* those in this object. If null, ``merge`` returns a copy of this
* object
* @return {CallSettings} The merged CallSettings instance.
*/
CallSettings.prototype.merge = function (options) {
if (!options) {
return new CallSettings(this);
}
var timeout = this.timeout;
var retry = this.retry;
var autoPaginate = this.autoPaginate;
var pageToken = this.pageToken;
var maxResults = this.maxResults;
var otherArgs = this.otherArgs;
var isBundling = this.isBundling;
var longrunning = this.longrunning;
var promise = this.promise;
if ('timeout' in options) {
timeout = options.timeout;
}
if ('retry' in options) {
retry = options.retry;
}
if ('autoPaginate' in options && !options.autoPaginate) {
autoPaginate = false;
}
if ('pageToken' in options) {
autoPaginate = false;
pageToken = options.pageToken;
}
if ('maxResults' in options) {
maxResults = options.maxResults;
}
if ('otherArgs' in options) {
otherArgs = {};
// tslint:disable-next-line forin
for (var key in this.otherArgs) {
otherArgs[key] = this.otherArgs[key];
}
// tslint:disable-next-line forin
for (var optionsKey in options.otherArgs) {
otherArgs[optionsKey] = options.otherArgs[optionsKey];
}
}
if ('isBundling' in options) {
isBundling = options.isBundling;
}
if ('maxRetries' in options) {
retry.backoffSettings.maxRetries = options.maxRetries;
delete retry.backoffSettings.totalTimeoutMillis;
}
if ('longrunning' in options) {
longrunning = options.longrunning;
}
if ('promise' in options) {
promise = options.promise;
}
return new CallSettings({
timeout: timeout,
retry: retry,
bundleOptions: this.bundleOptions,
longrunning: longrunning,
autoPaginate: autoPaginate,
pageToken: pageToken,
maxResults: maxResults,
otherArgs: otherArgs,
isBundling: isBundling,
promise: promise,
});
};
return CallSettings;
}());
exports.CallSettings = CallSettings;
/**
* Per-call configurable settings for retrying upon transient failure.
*
* @param {String[]} retryCodes - a list of Google API canonical error codes
* upon which a retry should be attempted.
* @param {BackoffSettings} backoffSettings - configures the retry
* exponential backoff algorithm.
* @return {RetryOptions} A new RetryOptions object.
*
*/
function createRetryOptions(retryCodes, backoffSettings) {
return {
retryCodes: retryCodes,
backoffSettings: backoffSettings,
};
}
exports.createRetryOptions = createRetryOptions;
/**
* Parameters to the exponential backoff algorithm for retrying.
*
* @param {number} initialRetryDelayMillis - the initial delay time,
* in milliseconds, between the completion of the first failed request and the
* initiation of the first retrying request.
* @param {number} retryDelayMultiplier - the multiplier by which to
* increase the delay time between the completion of failed requests, and the
* initiation of the subsequent retrying request.
* @param {number} maxRetryDelayMillis - the maximum delay time, in
* milliseconds, between requests. When this value is reached,
* ``retryDelayMultiplier`` will no longer be used to increase delay time.
* @param {number} initialRpcTimeoutMillis - the initial timeout parameter
* to the request.
* @param {number} rpcTimeoutMultiplier - the multiplier by which to
* increase the timeout parameter between failed requests.
* @param {number} maxRpcTimeoutMillis - the maximum timeout parameter, in
* milliseconds, for a request. When this value is reached,
* ``rpcTimeoutMultiplier`` will no longer be used to increase the timeout.
* @param {number} totalTimeoutMillis - the total time, in milliseconds,
* starting from when the initial request is sent, after which an error will
* be returned, regardless of the retrying attempts made meanwhile.
* @return {BackoffSettings} a new settings.
*
*/
function createBackoffSettings(initialRetryDelayMillis, retryDelayMultiplier, maxRetryDelayMillis, initialRpcTimeoutMillis, rpcTimeoutMultiplier, maxRpcTimeoutMillis, totalTimeoutMillis) {
return {
initialRetryDelayMillis: initialRetryDelayMillis,
retryDelayMultiplier: retryDelayMultiplier,
maxRetryDelayMillis: maxRetryDelayMillis,
initialRpcTimeoutMillis: initialRpcTimeoutMillis,
rpcTimeoutMultiplier: rpcTimeoutMultiplier,
maxRpcTimeoutMillis: maxRpcTimeoutMillis,
totalTimeoutMillis: totalTimeoutMillis,
};
}
exports.createBackoffSettings = createBackoffSettings;
/**
* Parameters to the exponential backoff algorithm for retrying.
* This function is unsupported, and intended for internal use only.
*
* @param {number} initialRetryDelayMillis - the initial delay time,
* in milliseconds, between the completion of the first failed request and the
* initiation of the first retrying request.
* @param {number} retryDelayMultiplier - the multiplier by which to
* increase the delay time between the completion of failed requests, and the
* initiation of the subsequent retrying request.
* @param {number} maxRetryDelayMillis - the maximum delay time, in
* milliseconds, between requests. When this value is reached,
* ``retryDelayMultiplier`` will no longer be used to increase delay time.
* @param {number} initialRpcTimeoutMillis - the initial timeout parameter
* to the request.
* @param {number} rpcTimeoutMultiplier - the multiplier by which to
* increase the timeout parameter between failed requests.
* @param {number} maxRpcTimeoutMillis - the maximum timeout parameter, in
* milliseconds, for a request. When this value is reached,
* ``rpcTimeoutMultiplier`` will no longer be used to increase the timeout.
* @param {number} maxRetries - the maximum number of retrying attempts that
* will be made. If reached, an error will be returned.
* @return {BackoffSettings} a new settings.
*
*/
function createMaxRetriesBackoffSettings(initialRetryDelayMillis, retryDelayMultiplier, maxRetryDelayMillis, initialRpcTimeoutMillis, rpcTimeoutMultiplier, maxRpcTimeoutMillis, maxRetries) {
return {
initialRetryDelayMillis: initialRetryDelayMillis,
retryDelayMultiplier: retryDelayMultiplier,
maxRetryDelayMillis: maxRetryDelayMillis,
initialRpcTimeoutMillis: initialRpcTimeoutMillis,
rpcTimeoutMultiplier: rpcTimeoutMultiplier,
maxRpcTimeoutMillis: maxRpcTimeoutMillis,
maxRetries: maxRetries,
};
}
exports.createMaxRetriesBackoffSettings = createMaxRetriesBackoffSettings;
/**
* Creates a new {@link BundleOptions}.
*
* @private
* @param {Object} options - An object to hold optional parameters. See
* properties for the content of options.
* @return {BundleOptions} - A new options.
*/
function createBundleOptions(options) {
var params = [
'element_count_threshold',
'element_count_limit',
'request_byte_threshold',
'request_byte_limit',
'delay_threshold_millis',
];
params.forEach(function (param) {
if (param in options && typeof options[param] !== 'number') {
throw new Error(param + " should be a number");
}
});
var elementCountThreshold = options.element_count_threshold || 0;
var elementCountLimit = options.element_count_limit || 0;
var requestByteThreshold = options.request_byte_threshold || 0;
var requestByteLimit = options.request_byte_limit || 0;
var delayThreshold = options.delay_threshold_millis || 0;
if (elementCountThreshold === 0 && requestByteThreshold === 0 &&
delayThreshold === 0) {
throw new Error('one threshold should be > 0');
}
return {
elementCountThreshold: elementCountThreshold,
elementCountLimit: elementCountLimit,
requestByteThreshold: requestByteThreshold,
requestByteLimit: requestByteLimit,
delayThreshold: delayThreshold,
};
}
exports.createBundleOptions = createBundleOptions;
/**
* Helper for {@link constructSettings}
*
* @private
*
* @param {Object} methodConfig - A dictionary representing a single
* `methods` entry of the standard API client config file. (See
* {@link constructSettings} for information on this yaml.)
* @param {?Object} retryCodes - A dictionary parsed from the
* `retry_codes_def` entry of the standard API client config
* file. (See {@link constructSettings} for information on this yaml.)
* @param {Object} retryParams - A dictionary parsed from the
* `retry_params` entry of the standard API client config
* file. (See {@link constructSettings} for information on this yaml.)
* @param {Object} retryNames - A dictionary mapping the string names
* used in the standard API client config file to API response
* status codes.
* @return {?RetryOptions} The new retry options.
*/
function constructRetry(methodConfig, retryCodes, retryParams, retryNames) {
if (!methodConfig) {
return null;
}
var codes = null;
if (retryCodes && 'retry_codes_name' in methodConfig) {
var retryCodesName = methodConfig['retry_codes_name'];
codes = (retryCodes[retryCodesName] || []).map(function (name) {
return Number(retryNames[name]);
});
}
var backoffSettings = null;
if (retryParams && 'retry_params_name' in methodConfig) {
var params = retryParams[methodConfig.retry_params_name];
backoffSettings = createBackoffSettings(params.initial_retry_delay_millis, params.retry_delay_multiplier, params.max_retry_delay_millis, params.initial_rpc_timeout_millis, params.rpc_timeout_multiplier, params.max_rpc_timeout_millis, params.total_timeout_millis);
}
return createRetryOptions(codes, backoffSettings);
}
/**
* Helper for {@link constructSettings}
*
* Takes two retry options, and merges them into a single RetryOption instance.
*
* @private
*
* @param {RetryOptions} retry - The base RetryOptions.
* @param {RetryOptions} overrides - The RetryOptions used for overriding
* `retry`. Use the values if it is not null. If entire `overrides` is null,
* ignore the base retry and return null.
* @return {?RetryOptions} The merged RetryOptions.
*/
function mergeRetryOptions(retry, overrides) {
if (!overrides) {
return null;
}
if (!overrides.retryCodes && !overrides.backoffSettings) {
return retry;
}
var codes = retry.retryCodes;
if (overrides.retryCodes) {
codes = overrides.retryCodes;
}
var backoffSettings = retry.backoffSettings;
if (overrides.backoffSettings) {
backoffSettings = overrides.backoffSettings;
}
return createRetryOptions(codes, backoffSettings);
}
/**
* Constructs a dictionary mapping method names to {@link CallSettings}.
*
* The `clientConfig` parameter is parsed from a client configuration JSON
* file of the form:
*
* {
* "interfaces": {
* "google.fake.v1.ServiceName": {
* "retry_codes": {
* "idempotent": ["UNAVAILABLE", "DEADLINE_EXCEEDED"],
* "non_idempotent": []
* },
* "retry_params": {
* "default": {
* "initial_retry_delay_millis": 100,
* "retry_delay_multiplier": 1.2,
* "max_retry_delay_millis": 1000,
* "initial_rpc_timeout_millis": 2000,
* "rpc_timeout_multiplier": 1.5,
* "max_rpc_timeout_millis": 30000,
* "total_timeout_millis": 45000
* }
* },
* "methods": {
* "CreateFoo": {
* "retry_codes_name": "idempotent",
* "retry_params_name": "default"
* },
* "Publish": {
* "retry_codes_name": "non_idempotent",
* "retry_params_name": "default",
* "bundling": {
* "element_count_threshold": 40,
* "element_count_limit": 200,
* "request_byte_threshold": 90000,
* "request_byte_limit": 100000,
* "delay_threshold_millis": 100
* }
* }
* }
* }
* }
* }
*
* @param {String} serviceName - The fully-qualified name of this
* service, used as a key into the client config file (in the
* example above, this value should be 'google.fake.v1.ServiceName').
* @param {Object} clientConfig - A dictionary parsed from the
* standard API client config file.
* @param {Object} configOverrides - A dictionary in the same structure of
* client_config to override the settings.
* @param {Object.<string, string[]>} retryNames - A dictionary mapping the strings
* referring to response status codes to objects representing
* those codes.
* @param {Object} otherArgs - the non-request arguments to be passed to the API
* calls.
* @param {Function=} promise - A constructor for a promise that implements the
* ES6 specification of promise. If not provided, native promises will be used.
* @return {Object} A mapping from method name to CallSettings, or null if the
* service is not found in the config.
*/
function constructSettings(serviceName, clientConfig, configOverrides, retryNames, otherArgs, promise) {
otherArgs = otherArgs || {};
// tslint:disable-next-line no-any
var defaults = {};
var serviceConfig = (clientConfig.interfaces || {})[serviceName];
if (!serviceConfig) {
return null;
}
var overrides = (configOverrides.interfaces || {})[serviceName] || {};
var methods = serviceConfig.methods;
var overridingMethods = overrides.methods || {};
// tslint:disable-next-line forin
for (var methodName in methods) {
var methodConfig = methods[methodName];
var jsName = methodName[0].toLowerCase() + methodName.slice(1);
var retry = constructRetry(methodConfig, serviceConfig.retry_codes, serviceConfig.retry_params, retryNames);
var bundlingConfig = methodConfig.bundling;
var timeout = methodConfig.timeout_millis;
if (methodName in overridingMethods) {
var overridingMethod = overridingMethods[methodName];
if (overridingMethod) {
if ('bundling' in overridingMethod) {
bundlingConfig = overridingMethod.bundling;
}
if ('timeout_millis' in overridingMethod) {
timeout = overridingMethod.timeout_millis;
}
}
retry = mergeRetryOptions(retry, constructRetry(overridingMethod, overrides.retry_codes, overrides.retry_params, retryNames));
}
defaults[jsName] = new CallSettings({
timeout: timeout,
retry: retry,
bundleOptions: bundlingConfig ? createBundleOptions(bundlingConfig) :
null,
otherArgs: otherArgs,
promise: promise || Promise,
});
}
return defaults;
}
exports.constructSettings = constructSettings;
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