1 | var AWS = require('./core');
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2 | require('./credentials');
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3 | require('./credentials/credential_provider_chain');
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4 | var PromisesDependency;
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5 |
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6 | /**
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7 | * The main configuration class used by all service objects to set
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8 | * the region, credentials, and other options for requests.
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9 | *
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10 | * By default, credentials and region settings are left unconfigured.
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11 | * This should be configured by the application before using any
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12 | * AWS service APIs.
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13 | *
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14 | * In order to set global configuration options, properties should
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15 | * be assigned to the global {AWS.config} object.
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16 | *
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17 | * @see AWS.config
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18 | *
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19 | * @!group General Configuration Options
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20 | *
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21 | * @!attribute credentials
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22 | * @return [AWS.Credentials] the AWS credentials to sign requests with.
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23 | *
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24 | * @!attribute region
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25 | * @example Set the global region setting to us-west-2
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26 | * AWS.config.update({region: 'us-west-2'});
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27 | * @return [AWS.Credentials] The region to send service requests to.
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28 | * @see http://docs.amazonwebservices.com/general/latest/gr/rande.html
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29 | * A list of available endpoints for each AWS service
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30 | *
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31 | * @!attribute maxRetries
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32 | * @return [Integer] the maximum amount of retries to perform for a
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33 | * service request. By default this value is calculated by the specific
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34 | * service object that the request is being made to.
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35 | *
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36 | * @!attribute maxRedirects
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37 | * @return [Integer] the maximum amount of redirects to follow for a
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38 | * service request. Defaults to 10.
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39 | *
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40 | * @!attribute paramValidation
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41 | * @return [Boolean|map] whether input parameters should be validated against
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42 | * the operation description before sending the request. Defaults to true.
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43 | * Pass a map to enable any of the following specific validation features:
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44 | *
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45 | * * **min** [Boolean] — Validates that a value meets the min
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46 | * constraint. This is enabled by default when paramValidation is set
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47 | * to `true`.
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48 | * * **max** [Boolean] — Validates that a value meets the max
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49 | * constraint.
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50 | * * **pattern** [Boolean] — Validates that a string value matches a
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51 | * regular expression.
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52 | * * **enum** [Boolean] — Validates that a string value matches one
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53 | * of the allowable enum values.
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54 | *
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55 | * @!attribute computeChecksums
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56 | * @return [Boolean] whether to compute checksums for payload bodies when
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57 | * the service accepts it (currently supported in S3 only).
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58 | *
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59 | * @!attribute convertResponseTypes
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60 | * @return [Boolean] whether types are converted when parsing response data.
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61 | * Currently only supported for JSON based services. Turning this off may
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62 | * improve performance on large response payloads. Defaults to `true`.
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63 | *
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64 | * @!attribute correctClockSkew
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65 | * @return [Boolean] whether to apply a clock skew correction and retry
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66 | * requests that fail because of an skewed client clock. Defaults to
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67 | * `false`.
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68 | *
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69 | * @!attribute sslEnabled
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70 | * @return [Boolean] whether SSL is enabled for requests
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71 | *
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72 | * @!attribute s3ForcePathStyle
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73 | * @return [Boolean] whether to force path style URLs for S3 objects
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74 | *
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75 | * @!attribute s3BucketEndpoint
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76 | * @note Setting this configuration option requires an `endpoint` to be
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77 | * provided explicitly to the service constructor.
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78 | * @return [Boolean] whether the provided endpoint addresses an individual
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79 | * bucket (false if it addresses the root API endpoint).
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80 | *
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81 | * @!attribute s3DisableBodySigning
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82 | * @return [Boolean] whether to disable S3 body signing when using signature version `v4`.
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83 | * Body signing can only be disabled when using https. Defaults to `true`.
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84 | *
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85 | * @!attribute useAccelerateEndpoint
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86 | * @note This configuration option is only compatible with S3 while accessing
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87 | * dns-compatible buckets.
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88 | * @return [Boolean] Whether to use the Accelerate endpoint with the S3 service.
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89 | * Defaults to `false`.
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90 | *
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91 | * @!attribute retryDelayOptions
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92 | * @example Set the base retry delay for all services to 300 ms
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93 | * AWS.config.update({retryDelayOptions: {base: 300}});
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94 | * // Delays with maxRetries = 3: 300, 600, 1200
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95 | * @example Set a custom backoff function to provide delay values on retries
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96 | * AWS.config.update({retryDelayOptions: {customBackoff: function(retryCount) {
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97 | * // returns delay in ms
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98 | * }}});
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99 | * @return [map] A set of options to configure the retry delay on retryable errors.
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100 | * Currently supported options are:
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101 | *
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102 | * * **base** [Integer] — The base number of milliseconds to use in the
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103 | * exponential backoff for operation retries. Defaults to 100 ms for all services except
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104 | * DynamoDB, where it defaults to 50ms.
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105 | * * **customBackoff ** [function] — A custom function that accepts a retry count
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106 | * and returns the amount of time to delay in milliseconds. The `base` option will be
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107 | * ignored if this option is supplied.
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108 | *
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109 | * @!attribute httpOptions
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110 | * @return [map] A set of options to pass to the low-level HTTP request.
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111 | * Currently supported options are:
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112 | *
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113 | * * **proxy** [String] — the URL to proxy requests through
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114 | * * **agent** [http.Agent, https.Agent] — the Agent object to perform
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115 | * HTTP requests with. Used for connection pooling. Defaults to the global
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116 | * agent (`http.globalAgent`) for non-SSL connections. Note that for
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117 | * SSL connections, a special Agent object is used in order to enable
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118 | * peer certificate verification. This feature is only supported in the
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119 | * Node.js environment.
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120 | * * **connectTimeout** [Integer] — Sets the socket to timeout after
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121 | * failing to establish a connection with the server after
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122 | * `connectTimeout` milliseconds. This timeout has no effect once a socket
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123 | * connection has been established.
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124 | * * **timeout** [Integer] — Sets the socket to timeout after timeout
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125 | * milliseconds of inactivity on the socket. Defaults to two minutes
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126 | * (120000)
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127 | * * **xhrAsync** [Boolean] — Whether the SDK will send asynchronous
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128 | * HTTP requests. Used in the browser environment only. Set to false to
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129 | * send requests synchronously. Defaults to true (async on).
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130 | * * **xhrWithCredentials** [Boolean] — Sets the "withCredentials"
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131 | * property of an XMLHttpRequest object. Used in the browser environment
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132 | * only. Defaults to false.
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133 | * @!attribute logger
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134 | * @return [#write,#log] an object that responds to .write() (like a stream)
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135 | * or .log() (like the console object) in order to log information about
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136 | * requests
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137 | *
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138 | * @!attribute systemClockOffset
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139 | * @return [Number] an offset value in milliseconds to apply to all signing
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140 | * times. Use this to compensate for clock skew when your system may be
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141 | * out of sync with the service time. Note that this configuration option
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142 | * can only be applied to the global `AWS.config` object and cannot be
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143 | * overridden in service-specific configuration. Defaults to 0 milliseconds.
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144 | *
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145 | * @!attribute signatureVersion
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146 | * @return [String] the signature version to sign requests with (overriding
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147 | * the API configuration). Possible values are: 'v2', 'v3', 'v4'.
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148 | *
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149 | * @!attribute signatureCache
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150 | * @return [Boolean] whether the signature to sign requests with (overriding
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151 | * the API configuration) is cached. Only applies to the signature version 'v4'.
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152 | * Defaults to `true`.
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153 | *
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154 | * @!attribute endpointDiscoveryEnabled
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155 | * @return [Boolean] whether to enable endpoint discovery for operations that
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156 | * allow optionally using an endpoint returned by the service.
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157 | * Defaults to 'false'
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158 | *
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159 | * @!attribute endpointCacheSize
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160 | * @return [Number] the size of the global cache storing endpoints from endpoint
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161 | * discovery operations. Once endpoint cache is created, updating this setting
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162 | * cannot change existing cache size.
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163 | * Defaults to 1000
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164 | *
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165 | * @!attribute hostPrefixEnabled
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166 | * @return [Boolean] whether to marshal request parameters to the prefix of
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167 | * hostname. Defaults to `true`.
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168 | */
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169 | AWS.Config = AWS.util.inherit({
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170 | /**
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171 | * @!endgroup
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172 | */
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173 |
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174 | /**
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175 | * Creates a new configuration object. This is the object that passes
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176 | * option data along to service requests, including credentials, security,
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177 | * region information, and some service specific settings.
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178 | *
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179 | * @example Creating a new configuration object with credentials and region
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180 | * var config = new AWS.Config({
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181 | * accessKeyId: 'AKID', secretAccessKey: 'SECRET', region: 'us-west-2'
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182 | * });
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183 | * @option options accessKeyId [String] your AWS access key ID.
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184 | * @option options secretAccessKey [String] your AWS secret access key.
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185 | * @option options sessionToken [AWS.Credentials] the optional AWS
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186 | * session token to sign requests with.
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187 | * @option options credentials [AWS.Credentials] the AWS credentials
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188 | * to sign requests with. You can either specify this object, or
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189 | * specify the accessKeyId and secretAccessKey options directly.
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190 | * @option options credentialProvider [AWS.CredentialProviderChain] the
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191 | * provider chain used to resolve credentials if no static `credentials`
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192 | * property is set.
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193 | * @option options region [String] the region to send service requests to.
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194 | * See {region} for more information.
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195 | * @option options maxRetries [Integer] the maximum amount of retries to
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196 | * attempt with a request. See {maxRetries} for more information.
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197 | * @option options maxRedirects [Integer] the maximum amount of redirects to
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198 | * follow with a request. See {maxRedirects} for more information.
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199 | * @option options sslEnabled [Boolean] whether to enable SSL for
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200 | * requests.
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201 | * @option options paramValidation [Boolean|map] whether input parameters
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202 | * should be validated against the operation description before sending
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203 | * the request. Defaults to true. Pass a map to enable any of the
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204 | * following specific validation features:
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205 | *
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206 | * * **min** [Boolean] — Validates that a value meets the min
|
207 | * constraint. This is enabled by default when paramValidation is set
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208 | * to `true`.
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209 | * * **max** [Boolean] — Validates that a value meets the max
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210 | * constraint.
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211 | * * **pattern** [Boolean] — Validates that a string value matches a
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212 | * regular expression.
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213 | * * **enum** [Boolean] — Validates that a string value matches one
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214 | * of the allowable enum values.
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215 | * @option options computeChecksums [Boolean] whether to compute checksums
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216 | * for payload bodies when the service accepts it (currently supported
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217 | * in S3 only)
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218 | * @option options convertResponseTypes [Boolean] whether types are converted
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219 | * when parsing response data. Currently only supported for JSON based
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220 | * services. Turning this off may improve performance on large response
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221 | * payloads. Defaults to `true`.
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222 | * @option options correctClockSkew [Boolean] whether to apply a clock skew
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223 | * correction and retry requests that fail because of an skewed client
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224 | * clock. Defaults to `false`.
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225 | * @option options s3ForcePathStyle [Boolean] whether to force path
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226 | * style URLs for S3 objects.
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227 | * @option options s3BucketEndpoint [Boolean] whether the provided endpoint
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228 | * addresses an individual bucket (false if it addresses the root API
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229 | * endpoint). Note that setting this configuration option requires an
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230 | * `endpoint` to be provided explicitly to the service constructor.
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231 | * @option options s3DisableBodySigning [Boolean] whether S3 body signing
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232 | * should be disabled when using signature version `v4`. Body signing
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233 | * can only be disabled when using https. Defaults to `true`.
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234 | *
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235 | * @option options retryDelayOptions [map] A set of options to configure
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236 | * the retry delay on retryable errors. Currently supported options are:
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237 | *
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238 | * * **base** [Integer] — The base number of milliseconds to use in the
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239 | * exponential backoff for operation retries. Defaults to 100 ms for all
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240 | * services except DynamoDB, where it defaults to 50ms.
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241 | * * **customBackoff ** [function] — A custom function that accepts a retry count
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242 | * and returns the amount of time to delay in milliseconds. The `base` option will be
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243 | * ignored if this option is supplied.
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244 | * @option options httpOptions [map] A set of options to pass to the low-level
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245 | * HTTP request. Currently supported options are:
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246 | *
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247 | * * **proxy** [String] — the URL to proxy requests through
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248 | * * **agent** [http.Agent, https.Agent] — the Agent object to perform
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249 | * HTTP requests with. Used for connection pooling. Defaults to the global
|
250 | * agent (`http.globalAgent`) for non-SSL connections. Note that for
|
251 | * SSL connections, a special Agent object is used in order to enable
|
252 | * peer certificate verification. This feature is only available in the
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253 | * Node.js environment.
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254 | * * **connectTimeout** [Integer] — Sets the socket to timeout after
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255 | * failing to establish a connection with the server after
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256 | * `connectTimeout` milliseconds. This timeout has no effect once a socket
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257 | * connection has been established.
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258 | * * **timeout** [Integer] — Sets the socket to timeout after timeout
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259 | * milliseconds of inactivity on the socket. Defaults to two minutes
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260 | * (120000).
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261 | * * **xhrAsync** [Boolean] — Whether the SDK will send asynchronous
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262 | * HTTP requests. Used in the browser environment only. Set to false to
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263 | * send requests synchronously. Defaults to true (async on).
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264 | * * **xhrWithCredentials** [Boolean] — Sets the "withCredentials"
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265 | * property of an XMLHttpRequest object. Used in the browser environment
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266 | * only. Defaults to false.
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267 | * @option options apiVersion [String, Date] a String in YYYY-MM-DD format
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268 | * (or a date) that represents the latest possible API version that can be
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269 | * used in all services (unless overridden by `apiVersions`). Specify
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270 | * 'latest' to use the latest possible version.
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271 | * @option options apiVersions [map<String, String|Date>] a map of service
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272 | * identifiers (the lowercase service class name) with the API version to
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273 | * use when instantiating a service. Specify 'latest' for each individual
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274 | * that can use the latest available version.
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275 | * @option options logger [#write,#log] an object that responds to .write()
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276 | * (like a stream) or .log() (like the console object) in order to log
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277 | * information about requests
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278 | * @option options systemClockOffset [Number] an offset value in milliseconds
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279 | * to apply to all signing times. Use this to compensate for clock skew
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280 | * when your system may be out of sync with the service time. Note that
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281 | * this configuration option can only be applied to the global `AWS.config`
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282 | * object and cannot be overridden in service-specific configuration.
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283 | * Defaults to 0 milliseconds.
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284 | * @option options signatureVersion [String] the signature version to sign
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285 | * requests with (overriding the API configuration). Possible values are:
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286 | * 'v2', 'v3', 'v4'.
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287 | * @option options signatureCache [Boolean] whether the signature to sign
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288 | * requests with (overriding the API configuration) is cached. Only applies
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289 | * to the signature version 'v4'. Defaults to `true`.
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290 | * @option options dynamoDbCrc32 [Boolean] whether to validate the CRC32
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291 | * checksum of HTTP response bodies returned by DynamoDB. Default: `true`.
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292 | * @option options useAccelerateEndpoint [Boolean] Whether to use the
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293 | * S3 Transfer Acceleration endpoint with the S3 service. Default: `false`.
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294 | * @option options clientSideMonitoring [Boolean] whether to collect and
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295 | * publish this client's performance metrics of all its API requests.
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296 | * @option options endpointDiscoveryEnabled [Boolean] whether to enable endpoint
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297 | * discovery for operations that allow optionally using an endpoint returned by
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298 | * the service.
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299 | * Defaults to 'false'
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300 | * @option options endpointCacheSize [Number] the size of the global cache storing
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301 | * endpoints from endpoint discovery operations. Once endpoint cache is created,
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302 | * updating this setting cannot change existing cache size.
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303 | * Defaults to 1000
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304 | * @option options hostPrefixEnabled [Boolean] whether to marshal request
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305 | * parameters to the prefix of hostname.
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306 | * Defaults to `true`.
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307 | */
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308 | constructor: function Config(options) {
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309 | if (options === undefined) options = {};
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310 | options = this.extractCredentials(options);
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311 |
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312 | AWS.util.each.call(this, this.keys, function (key, value) {
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313 | this.set(key, options[key], value);
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314 | });
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315 | },
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316 |
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317 | /**
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318 | * @!group Managing Credentials
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319 | */
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320 |
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321 | /**
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322 | * Loads credentials from the configuration object. This is used internally
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323 | * by the SDK to ensure that refreshable {Credentials} objects are properly
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324 | * refreshed and loaded when sending a request. If you want to ensure that
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325 | * your credentials are loaded prior to a request, you can use this method
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326 | * directly to provide accurate credential data stored in the object.
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327 | *
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328 | * @note If you configure the SDK with static or environment credentials,
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329 | * the credential data should already be present in {credentials} attribute.
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330 | * This method is primarily necessary to load credentials from asynchronous
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331 | * sources, or sources that can refresh credentials periodically.
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332 | * @example Getting your access key
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333 | * AWS.config.getCredentials(function(err) {
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334 | * if (err) console.log(err.stack); // credentials not loaded
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335 | * else console.log("Access Key:", AWS.config.credentials.accessKeyId);
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336 | * })
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337 | * @callback callback function(err)
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338 | * Called when the {credentials} have been properly set on the configuration
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339 | * object.
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340 | *
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341 | * @param err [Error] if this is set, credentials were not successfully
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342 | * loaded and this error provides information why.
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343 | * @see credentials
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344 | * @see Credentials
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345 | */
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346 | getCredentials: function getCredentials(callback) {
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347 | var self = this;
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348 |
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349 | function finish(err) {
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350 | callback(err, err ? null : self.credentials);
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351 | }
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352 |
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353 | function credError(msg, err) {
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354 | return new AWS.util.error(err || new Error(), {
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355 | code: 'CredentialsError',
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356 | message: msg,
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357 | name: 'CredentialsError'
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358 | });
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359 | }
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360 |
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361 | function getAsyncCredentials() {
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362 | self.credentials.get(function(err) {
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363 | if (err) {
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364 | var msg = 'Could not load credentials from ' +
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365 | self.credentials.constructor.name;
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366 | err = credError(msg, err);
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367 | }
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368 | finish(err);
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369 | });
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370 | }
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371 |
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372 | function getStaticCredentials() {
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373 | var err = null;
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374 | if (!self.credentials.accessKeyId || !self.credentials.secretAccessKey) {
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375 | err = credError('Missing credentials');
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376 | }
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377 | finish(err);
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378 | }
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379 |
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380 | if (self.credentials) {
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381 | if (typeof self.credentials.get === 'function') {
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382 | getAsyncCredentials();
|
383 | } else { // static credentials
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384 | getStaticCredentials();
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385 | }
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386 | } else if (self.credentialProvider) {
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387 | self.credentialProvider.resolve(function(err, creds) {
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388 | if (err) {
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389 | err = credError('Could not load credentials from any providers', err);
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390 | }
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391 | self.credentials = creds;
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392 | finish(err);
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393 | });
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394 | } else {
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395 | finish(credError('No credentials to load'));
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396 | }
|
397 | },
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398 |
|
399 | /**
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400 | * @!group Loading and Setting Configuration Options
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401 | */
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402 |
|
403 | /**
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404 | * @overload update(options, allowUnknownKeys = false)
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405 | * Updates the current configuration object with new options.
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406 | *
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407 | * @example Update maxRetries property of a configuration object
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408 | * config.update({maxRetries: 10});
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409 | * @param [Object] options a map of option keys and values.
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410 | * @param [Boolean] allowUnknownKeys whether unknown keys can be set on
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411 | * the configuration object. Defaults to `false`.
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412 | * @see constructor
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413 | */
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414 | update: function update(options, allowUnknownKeys) {
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415 | allowUnknownKeys = allowUnknownKeys || false;
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416 | options = this.extractCredentials(options);
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417 | AWS.util.each.call(this, options, function (key, value) {
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418 | if (allowUnknownKeys || Object.prototype.hasOwnProperty.call(this.keys, key) ||
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419 | AWS.Service.hasService(key)) {
|
420 | this.set(key, value);
|
421 | }
|
422 | });
|
423 | },
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424 |
|
425 | /**
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426 | * Loads configuration data from a JSON file into this config object.
|
427 | * @note Loading configuration will reset all existing configuration
|
428 | * on the object.
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429 | * @!macro nobrowser
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430 | * @param path [String] the path relative to your process's current
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431 | * working directory to load configuration from.
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432 | * @return [AWS.Config] the same configuration object
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433 | */
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434 | loadFromPath: function loadFromPath(path) {
|
435 | this.clear();
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436 |
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437 | var options = JSON.parse(AWS.util.readFileSync(path));
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438 | var fileSystemCreds = new AWS.FileSystemCredentials(path);
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439 | var chain = new AWS.CredentialProviderChain();
|
440 | chain.providers.unshift(fileSystemCreds);
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441 | chain.resolve(function (err, creds) {
|
442 | if (err) throw err;
|
443 | else options.credentials = creds;
|
444 | });
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445 |
|
446 | this.constructor(options);
|
447 |
|
448 | return this;
|
449 | },
|
450 |
|
451 | /**
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452 | * Clears configuration data on this object
|
453 | *
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454 | * @api private
|
455 | */
|
456 | clear: function clear() {
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457 | /*jshint forin:false */
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458 | AWS.util.each.call(this, this.keys, function (key) {
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459 | delete this[key];
|
460 | });
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461 |
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462 | // reset credential provider
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463 | this.set('credentials', undefined);
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464 | this.set('credentialProvider', undefined);
|
465 | },
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466 |
|
467 | /**
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468 | * Sets a property on the configuration object, allowing for a
|
469 | * default value
|
470 | * @api private
|
471 | */
|
472 | set: function set(property, value, defaultValue) {
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473 | if (value === undefined) {
|
474 | if (defaultValue === undefined) {
|
475 | defaultValue = this.keys[property];
|
476 | }
|
477 | if (typeof defaultValue === 'function') {
|
478 | this[property] = defaultValue.call(this);
|
479 | } else {
|
480 | this[property] = defaultValue;
|
481 | }
|
482 | } else if (property === 'httpOptions' && this[property]) {
|
483 | // deep merge httpOptions
|
484 | this[property] = AWS.util.merge(this[property], value);
|
485 | } else {
|
486 | this[property] = value;
|
487 | }
|
488 | },
|
489 |
|
490 | /**
|
491 | * All of the keys with their default values.
|
492 | *
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493 | * @constant
|
494 | * @api private
|
495 | */
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496 | keys: {
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497 | credentials: null,
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498 | credentialProvider: null,
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499 | region: null,
|
500 | logger: null,
|
501 | apiVersions: {},
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502 | apiVersion: null,
|
503 | endpoint: undefined,
|
504 | httpOptions: {
|
505 | timeout: 120000
|
506 | },
|
507 | maxRetries: undefined,
|
508 | maxRedirects: 10,
|
509 | paramValidation: true,
|
510 | sslEnabled: true,
|
511 | s3ForcePathStyle: false,
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512 | s3BucketEndpoint: false,
|
513 | s3DisableBodySigning: true,
|
514 | computeChecksums: true,
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515 | convertResponseTypes: true,
|
516 | correctClockSkew: false,
|
517 | customUserAgent: null,
|
518 | dynamoDbCrc32: true,
|
519 | systemClockOffset: 0,
|
520 | signatureVersion: null,
|
521 | signatureCache: true,
|
522 | retryDelayOptions: {},
|
523 | useAccelerateEndpoint: false,
|
524 | clientSideMonitoring: false,
|
525 | endpointDiscoveryEnabled: false,
|
526 | endpointCacheSize: 1000,
|
527 | hostPrefixEnabled: true
|
528 | },
|
529 |
|
530 | /**
|
531 | * Extracts accessKeyId, secretAccessKey and sessionToken
|
532 | * from a configuration hash.
|
533 | *
|
534 | * @api private
|
535 | */
|
536 | extractCredentials: function extractCredentials(options) {
|
537 | if (options.accessKeyId && options.secretAccessKey) {
|
538 | options = AWS.util.copy(options);
|
539 | options.credentials = new AWS.Credentials(options);
|
540 | }
|
541 | return options;
|
542 | },
|
543 |
|
544 | /**
|
545 | * Sets the promise dependency the SDK will use wherever Promises are returned.
|
546 | * Passing `null` will force the SDK to use native Promises if they are available.
|
547 | * If native Promises are not available, passing `null` will have no effect.
|
548 | * @param [Constructor] dep A reference to a Promise constructor
|
549 | */
|
550 | setPromisesDependency: function setPromisesDependency(dep) {
|
551 | PromisesDependency = dep;
|
552 | // if null was passed in, we should try to use native promises
|
553 | if (dep === null && typeof Promise === 'function') {
|
554 | PromisesDependency = Promise;
|
555 | }
|
556 | var constructors = [AWS.Request, AWS.Credentials, AWS.CredentialProviderChain];
|
557 | if (AWS.S3 && AWS.S3.ManagedUpload) constructors.push(AWS.S3.ManagedUpload);
|
558 | AWS.util.addPromises(constructors, PromisesDependency);
|
559 | },
|
560 |
|
561 | /**
|
562 | * Gets the promise dependency set by `AWS.config.setPromisesDependency`.
|
563 | */
|
564 | getPromisesDependency: function getPromisesDependency() {
|
565 | return PromisesDependency;
|
566 | }
|
567 | });
|
568 |
|
569 | /**
|
570 | * @return [AWS.Config] The global configuration object singleton instance
|
571 | * @readonly
|
572 | * @see AWS.Config
|
573 | */
|
574 | AWS.config = new AWS.Config();
|