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<span class="comment">// Copyright 2017 LambdaStack All rights reserved.</span>
<span class="comment">//</span>
<span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span>
<span class="comment">// you may not use this file except in compliance with the License.</span>
<span class="comment">// You may obtain a copy of the License at</span>
<span class="comment">//</span>
<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span>
<span class="comment">//</span>
<span class="comment">// Unless required by applicable law or agreed to in writing, software</span>
<span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span>
<span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<span class="comment">// See the License for the specific language governing permissions and</span>
<span class="comment">// limitations under the License.</span>
<span class="comment">// Portions borrowed from the rusoto project. See README.md</span>
<span class="doccomment">//! Client Documentation</span>
<span class="doccomment">//!</span>
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">env</span>::<span class="kw-2">*</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">env</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>::<span class="ident">File</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">path</span>::{<span class="ident">Path</span>, <span class="ident">PathBuf</span>};
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>::<span class="ident">prelude</span>::<span class="kw-2">*</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>::<span class="ident">BufReader</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">ascii</span>::<span class="ident">AsciiExt</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashMap</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">sync</span>::<span class="ident">Mutex</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">cell</span>::<span class="ident">RefCell</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">time</span>::<span class="ident">Duration</span> <span class="kw">as</span> <span class="ident">StdDuration</span>;
<span class="kw">use</span> <span class="ident">hyper</span>::<span class="ident">Client</span>;
<span class="kw">use</span> <span class="ident">hyper</span>::<span class="ident">header</span>::<span class="ident">Connection</span>;
<span class="kw">use</span> <span class="ident">regex</span>::<span class="ident">Regex</span>;
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">Duration</span>, <span class="ident">UTC</span>, <span class="ident">DateTime</span>};
<span class="kw">use</span> <span class="ident">serde_json</span>::{<span class="ident">Value</span>, <span class="ident">from_str</span>};
<span class="kw">use</span> <span class="ident">aws</span>::<span class="ident">errors</span>::<span class="ident">creds</span>::<span class="ident">CredentialsError</span>;
<span class="doccomment">/// Threadsafe AutoRefreshingProvider that locks cached credentials with a Mutex</span>
<span class="kw">pub</span> <span class="kw">type</span> <span class="ident">AutoRefreshingProviderSync</span><span class="op"><</span><span class="ident">P</span><span class="op">></span> <span class="op">=</span> <span class="ident">BaseAutoRefreshingProvider</span><span class="op"><</span><span class="ident">P</span>, <span class="ident">Mutex</span><span class="op"><</span><span class="ident">AwsCredentials</span><span class="op">>></span>;
<span class="doccomment">/// The credentials provider you probably want to use if you do require your AWS services sync.</span>
<span class="doccomment">/// Wraps a ChainProvider in an AutoRefreshingProvider that uses a Mutex to lock credentials in a</span>
<span class="doccomment">/// threadsafe manner.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The underlying ChainProvider checks multiple sources for credentials, and the</span>
<span class="doccomment">/// AutoRefreshingProvider refreshes the credentials automatically when they expire. The Mutex</span>
<span class="doccomment">/// allows this caching to happen in a Sync manner, incurring the overhead of a Mutex when</span>
<span class="doccomment">/// credentials expire and need to be refreshed.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// For a !Sync implementation of the same, see DefaultCredentialsProvider</span>
<span class="kw">pub</span> <span class="kw">type</span> <span class="ident">DefaultCredentialsProviderSync</span> <span class="op">=</span> <span class="ident">AutoRefreshingProviderSync</span><span class="op"><</span><span class="ident">ChainProvider</span><span class="op">></span>;
<span class="doccomment">/// The credentials provider you probably want to use if you don't require Sync for your</span>
<span class="doccomment">/// AWS services. Wraps a ChainProvider in an AutoRefreshingProvider that uses a RefCell to cache</span>
<span class="doccomment">/// credentials.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The underlying ChainProvider checks multiple sources for credentials, and the</span>
<span class="doccomment">/// AutoRefreshingProvider refreshes the credentials automatically when they expire. The RefCell</span>
<span class="doccomment">/// allows this caching to happen without the overhead of a Mutex, but is !Sync.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// For a Sync implementation of the same, see DefaultCredentialsProviderSync</span>
<span class="kw">pub</span> <span class="kw">type</span> <span class="ident">DefaultCredentialsProvider</span> <span class="op">=</span> <span class="ident">AutoRefreshingProvider</span><span class="op"><</span><span class="ident">ChainProvider</span><span class="op">></span>;
<span class="doccomment">/// !Sync AutoRefreshingProvider that caches credentials in a RefCell</span>
<span class="kw">pub</span> <span class="kw">type</span> <span class="ident">AutoRefreshingProvider</span><span class="op"><</span><span class="ident">P</span><span class="op">></span> <span class="op">=</span> <span class="ident">BaseAutoRefreshingProvider</span><span class="op"><</span><span class="ident">P</span>, <span class="ident">RefCell</span><span class="op"><</span><span class="ident">AwsCredentials</span><span class="op">>></span>;
<span class="doccomment">/// Primarily intended for client applications but also used for internal library documentation.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// AwsCredentials - Base struct for AWS</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This struct is very important! Without valid credentials then access to AWS S3 will be</span>
<span class="doccomment">/// allowed.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Debug</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">AwsCredentials</span> {
<span class="doccomment">/// access_key_id - Can be &str or String. Represents AWS Access Key.</span>
<span class="ident">access_key_id</span>: <span class="ident">String</span>,
<span class="doccomment">/// secret_key - Can be &str or String. Represents AWS Secret Key.</span>
<span class="ident">secret_access_key</span>: <span class="ident">String</span>,
<span class="doccomment">/// token - None or String. Represents AWS Token for IAM credentials.</span>
<span class="ident">token</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>,
<span class="doccomment">/// expires_at - Default to 10 minutes.</span>
<span class="ident">expires_at</span>: <span class="ident">DateTime</span><span class="op"><</span><span class="ident">UTC</span><span class="op">></span>
}
<span class="doccomment">/// Provides AWS credentials from environment variables. If you decide to use environment</span>
<span class="doccomment">/// variables then the first two listed below are *required*. The third is used for temporary</span>
<span class="doccomment">/// AWS access and not normally used by third party applications.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// 1. AWS_ACCESS_KEY_ID - (required - if using environment variables)</span>
<span class="doccomment">/// 2. AWS_SECRET_ACCESS_KEY - (required - if using environment variables)</span>
<span class="doccomment">/// 3. AWS_SESSION_TOKEN - (optional - if using environment variables)</span>
<span class="doccomment">///</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Debug</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">EnvironmentProvider</span>;
<span class="doccomment">/// Provides AWS credentials via Parameters. This allows you to use your own config settings</span>
<span class="doccomment">/// and pull the credentials from there and set them here. This is also part of the chained</span>
<span class="doccomment">/// provider where all of the credential providers can be tried in a given order of priority.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Debug</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ParametersProvider</span> {
<span class="ident">credentials</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">AwsCredentials</span><span class="op">></span>
}
<span class="doccomment">/// Provides AWS credentials from a profile in a credentials file.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The credentials file is located in the home directory of the given user by default.</span>
<span class="doccomment">/// You can change the `default` profile by calling `set_profile`.</span>
<span class="doccomment">///</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Debug</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ProfileProvider</span> {
<span class="ident">credentials</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">AwsCredentials</span><span class="op">></span>,
<span class="ident">location</span>: <span class="ident">PathBuf</span>,
<span class="ident">profile</span>: <span class="ident">String</span>,
}
<span class="doccomment">/// Provides AWS credentials from a resource's IAM role. Note: This is not fully tested.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Debug</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">IamProvider</span>;
<span class="doccomment">/// Wrapper for AwsCredentialsProvider that caches the credentials returned by the</span>
<span class="doccomment">/// wrapped provider. Each time the credentials are accessed, they are checked to see if</span>
<span class="doccomment">/// they have expired, in which case they are retrieved from the wrapped provider again.</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">BaseAutoRefreshingProvider</span><span class="op"><</span><span class="ident">P</span>, <span class="ident">T</span><span class="op">></span> {
<span class="kw">pub</span> <span class="ident">credentials_provider</span>: <span class="ident">P</span>,
<span class="ident">cached_credentials</span>: <span class="ident">T</span>
}
<span class="doccomment">/// Provides AWS credentials from multiple possible sources using a priority order.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The following sources are checked in order for credentials when calling `credentials`:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// 1. Parameters option. This is set in your code however you wish to set it. For example,</span>
<span class="doccomment">/// you could read from your own config file and set them or however.</span>
<span class="doccomment">/// 2. Environment variables: `AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY`</span>
<span class="doccomment">/// 3. AWS credentials file. Usually located at `~/.aws/credentials`.</span>
<span class="doccomment">/// 4. IAM instance profile. Will only work if running on an EC2 instance with an instance</span>
<span class="doccomment">/// profile/role.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If the sources are exhausted without finding credentials, an error is returned.</span>
<span class="doccomment">/// NB: If the chain makes it to the IAM provider then TCP timeout may cause a wait.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">Clone</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ChainProvider</span> {
<span class="ident">parameters_provider</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">ParametersProvider</span><span class="op">></span>,
<span class="ident">environment_provider</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">EnvironmentProvider</span><span class="op">></span>,
<span class="ident">profile_provider</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">ProfileProvider</span><span class="op">></span>,
}
<span class="doccomment">/// A trait for types that produce `AwsCredentials` This trait is implemented on most S3 calls.</span>
<span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">AwsCredentialsProvider</span> {
<span class="doccomment">/// Produce a new `AwsCredentials`.</span>
<span class="kw">fn</span> <span class="ident">credentials</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AwsCredentials</span>, <span class="ident">CredentialsError</span><span class="op">></span>;
}
<span class="comment">// Impls below...</span>
<span class="kw">impl</span> <span class="ident">AwsCredentials</span> {
<span class="doccomment">/// First method to be called. Creates the AWS credentials.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span><span class="op"><</span><span class="ident">K</span>, <span class="ident">S</span><span class="op">></span>(
<span class="ident">access_key_id</span>:<span class="ident">K</span>,
<span class="ident">secret_access_key</span>:<span class="ident">S</span>,
<span class="ident">token</span>:<span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>,
<span class="ident">expires_at</span>:<span class="ident">DateTime</span><span class="op"><</span><span class="ident">UTC</span><span class="op">></span>)
<span class="op">-></span> <span class="ident">AwsCredentials</span> <span class="kw">where</span> <span class="ident">K</span>:<span class="ident">Into</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>, <span class="ident">S</span>:<span class="ident">Into</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> {
<span class="ident">AwsCredentials</span> {
<span class="ident">access_key_id</span>: <span class="ident">access_key_id</span>.<span class="ident">into</span>(),
<span class="ident">secret_access_key</span>: <span class="ident">secret_access_key</span>.<span class="ident">into</span>(),
<span class="ident">token</span>: <span class="ident">token</span>,
<span class="ident">expires_at</span>: <span class="ident">expires_at</span>,
}
}
<span class="doccomment">/// Get a reference to the access key ID.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">aws_access_key_id</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">str</span> {
<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">access_key_id</span>
}
<span class="doccomment">/// Get a reference to the secret key.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">aws_secret_access_key</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">str</span> {
<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">secret_access_key</span>
}
<span class="doccomment">/// Get a reference to the expiration time.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">expires_at</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">DateTime</span><span class="op"><</span><span class="ident">UTC</span><span class="op">></span> {
<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">expires_at</span>
}
<span class="doccomment">/// Get a reference to the access token.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">token</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> {
<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">token</span>
}
<span class="doccomment">/// Determine whether or not the credentials have expired.</span>
<span class="kw">fn</span> <span class="ident">credentials_are_expired</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">bool</span> {
<span class="self">self</span>.<span class="ident">expires_at</span> <span class="op"><</span> <span class="ident">UTC</span>::<span class="ident">now</span>() <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">20</span>)
}
}
<span class="kw">impl</span> <span class="ident">EnvironmentProvider</span> {
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">EnvironmentProvider</span>, <span class="ident">CredentialsError</span><span class="op">></span> {
<span class="prelude-val">Ok</span>(<span class="ident">EnvironmentProvider</span>{})
}
}
<span class="kw">impl</span> <span class="ident">AwsCredentialsProvider</span> <span class="kw">for</span> <span class="ident">EnvironmentProvider</span> {
<span class="kw">fn</span> <span class="ident">credentials</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AwsCredentials</span>, <span class="ident">CredentialsError</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">env_key</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">var</span>(<span class="string">"AWS_ACCESS_KEY_ID"</span>) {
<span class="prelude-val">Ok</span>(<span class="ident">val</span>) <span class="op">=></span> <span class="ident">val</span>,
<span class="prelude-val">Err</span>(_) <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(<span class="string">"No AWS_ACCESS_KEY_ID in environment"</span>))
};
<span class="kw">let</span> <span class="ident">env_secret</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">var</span>(<span class="string">"AWS_SECRET_ACCESS_KEY"</span>) {
<span class="prelude-val">Ok</span>(<span class="ident">val</span>) <span class="op">=></span> <span class="ident">val</span>,
<span class="prelude-val">Err</span>(_) <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(<span class="string">"No AWS_SECRET_ACCESS_KEY in environment"</span>))
};
<span class="kw">if</span> <span class="ident">env_key</span>.<span class="ident">is_empty</span>() <span class="op">||</span> <span class="ident">env_secret</span>.<span class="ident">is_empty</span>() {
<span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(
<span class="string">"Couldn't find either AWS_ACCESS_KEY_ID, \
AWS_SECRET_ACCESS_KEY or both in environment."</span>));
}
<span class="comment">// Present when using temporary credentials, e.g. on Lambda with IAM roles</span>
<span class="kw">let</span> <span class="ident">token</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">var</span>(<span class="string">"AWS_SESSION_TOKEN"</span>) {
<span class="prelude-val">Ok</span>(<span class="ident">val</span>) <span class="op">=></span> {
<span class="kw">if</span> <span class="ident">val</span>.<span class="ident">is_empty</span>() {
<span class="prelude-val">None</span>
} <span class="kw">else</span> {
<span class="prelude-val">Some</span>(<span class="ident">val</span>)
}
}
<span class="prelude-val">Err</span>(_) <span class="op">=></span> <span class="prelude-val">None</span>,
};
<span class="prelude-val">Ok</span>(<span class="ident">AwsCredentials</span>::<span class="ident">new</span>(<span class="ident">env_key</span>, <span class="ident">env_secret</span>, <span class="ident">token</span>, <span class="ident">in_ten_minutes</span>()))
}
}
<span class="kw">impl</span> <span class="ident">ParametersProvider</span> {
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">ParametersProvider</span>, <span class="ident">CredentialsError</span><span class="op">></span> {
<span class="prelude-val">Ok</span>(<span class="ident">ParametersProvider</span>{
<span class="ident">credentials</span>: <span class="prelude-val">None</span>
})
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">with_parameters</span><span class="op"><</span><span class="ident">K</span>, <span class="ident">S</span><span class="op">></span>(
<span class="ident">access_key_id</span>:<span class="ident">K</span>,
<span class="ident">secret_access_key</span>:<span class="ident">S</span>,
<span class="ident">token</span>:<span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>)
<span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">ParametersProvider</span>, <span class="ident">CredentialsError</span><span class="op">></span> <span class="kw">where</span> <span class="ident">K</span>:<span class="ident">Into</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>, <span class="ident">S</span>:<span class="ident">Into</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">access_key_id</span>.<span class="ident">into</span>();
<span class="kw">let</span> <span class="ident">secret</span> <span class="op">=</span> <span class="ident">secret_access_key</span>.<span class="ident">into</span>();
<span class="kw">if</span> <span class="ident">key</span>.<span class="ident">is_empty</span>() <span class="op">||</span> <span class="ident">secret</span>.<span class="ident">is_empty</span>() {
<span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(<span class="string">"Keys are invalid."</span>));
}
<span class="prelude-val">Ok</span>(<span class="ident">ParametersProvider</span> {
<span class="ident">credentials</span>: <span class="prelude-val">Some</span>(<span class="ident">AwsCredentials</span>::<span class="ident">new</span>(<span class="ident">key</span>, <span class="ident">secret</span>, <span class="ident">token</span>, <span class="ident">in_ten_minutes</span>()))
})
}
}
<span class="kw">impl</span> <span class="ident">AwsCredentialsProvider</span> <span class="kw">for</span> <span class="ident">ParametersProvider</span> {
<span class="kw">fn</span> <span class="ident">credentials</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AwsCredentials</span>, <span class="ident">CredentialsError</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">creds</span> <span class="op">=</span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">credentials</span> {
<span class="prelude-val">None</span> <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(<span class="string">"No credentials."</span>)),
<span class="prelude-val">Some</span>(_) <span class="op">=></span> <span class="self">self</span>.<span class="ident">credentials</span>.<span class="ident">to_owned</span>().<span class="ident">unwrap</span>(),
};
<span class="prelude-val">Ok</span>(<span class="ident">creds</span>)
}
}
<span class="kw">impl</span> <span class="ident">ProfileProvider</span> {
<span class="doccomment">/// Create a new `ProfileProvider` for the default credentials file path and profile name.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// More details on the AWS credentials file can be found at AWS.</span>
<span class="doccomment">/// Linux or Mac OS - ~/.aws/credentials</span>
<span class="doccomment">/// Windows - %USERPROFILE%\.aws\credentials</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Sets the "default" credentials but can be overridden with set_profile.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">ProfileProvider</span>, <span class="ident">CredentialsError</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">location</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">env</span>::<span class="ident">home_dir</span>() {
<span class="prelude-val">Some</span>(<span class="ident">home</span>) <span class="op">=></span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">credentials_path</span> <span class="op">=</span> <span class="ident">PathBuf</span>::<span class="ident">from</span>(<span class="string">".aws"</span>);
<span class="ident">credentials_path</span>.<span class="ident">push</span>(<span class="string">"credentials"</span>);
<span class="ident">home</span>.<span class="ident">join</span>(<span class="ident">credentials_path</span>)
}
<span class="prelude-val">None</span> <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(
<span class="string">"The environment variable HOME must be set."</span>)),
};
<span class="prelude-val">Ok</span>(<span class="ident">ProfileProvider</span> {
<span class="ident">credentials</span>: <span class="prelude-val">None</span>,
<span class="ident">location</span>: <span class="ident">location</span>,
<span class="ident">profile</span>: <span class="string">"default"</span>.<span class="ident">to_owned</span>(),
})
}
<span class="doccomment">/// Create a new `ProfileProvider` for the credentials file at the given path, using</span>
<span class="doccomment">/// the given profile.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">with_profile</span><span class="op"><</span><span class="ident">F</span>, <span class="ident">P</span><span class="op">></span>(<span class="ident">location</span>: <span class="ident">F</span>, <span class="ident">profile</span>: <span class="ident">P</span>) <span class="op">-></span> <span class="ident">ProfileProvider</span>
<span class="kw">where</span> <span class="ident">F</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">PathBuf</span><span class="op">></span>, <span class="ident">P</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> {
<span class="ident">ProfileProvider</span> {
<span class="ident">credentials</span>: <span class="prelude-val">None</span>,
<span class="ident">location</span>: <span class="ident">location</span>.<span class="ident">into</span>(),
<span class="ident">profile</span>: <span class="ident">profile</span>.<span class="ident">into</span>(),
}
}
<span class="doccomment">/// Get a reference to the credentials location.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">location</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">Path</span> {
<span class="self">self</span>.<span class="ident">location</span>.<span class="ident">as_ref</span>()
}
<span class="doccomment">/// Get a reference to the profile name. Profile name is the subsection in the credentials</span>
<span class="doccomment">/// file. See AWS for details.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">profile</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">str</span> {
<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">profile</span>
}
<span class="doccomment">/// Set the credentials location.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_location</span><span class="op"><</span><span class="ident">F</span><span class="op">></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">location</span>: <span class="ident">F</span>) <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">PathBuf</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">location</span> <span class="op">=</span> <span class="ident">location</span>.<span class="ident">into</span>();
}
<span class="doccomment">/// Set the profile name. [default] is the profile that is used by `default`. However,</span>
<span class="doccomment">/// you can `set_profile` with the name that matches a named profile in your credentials</span>
<span class="doccomment">/// file and those credentials will be used.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_profile</span><span class="op"><</span><span class="ident">P</span><span class="op">></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">profile</span>: <span class="ident">P</span>) <span class="kw">where</span> <span class="ident">P</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">profile</span> <span class="op">=</span> <span class="ident">profile</span>.<span class="ident">into</span>();
}
}
<span class="kw">impl</span> <span class="ident">AwsCredentialsProvider</span> <span class="kw">for</span> <span class="ident">ProfileProvider</span> {
<span class="kw">fn</span> <span class="ident">credentials</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AwsCredentials</span>, <span class="ident">CredentialsError</span><span class="op">></span> {
<span class="ident">parse_credentials_file</span>(<span class="self">self</span>.<span class="ident">location</span>()).<span class="ident">and_then</span>(<span class="op">|</span><span class="kw-2">mut</span> <span class="ident">profiles</span><span class="op">|</span> {
<span class="ident">profiles</span>.<span class="ident">remove</span>(<span class="self">self</span>.<span class="ident">profile</span>()).<span class="ident">ok_or</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(<span class="string">"Profile not found."</span>))
})
}
}
<span class="kw">fn</span> <span class="ident">parse_credentials_file</span>(<span class="ident">location</span>: <span class="kw-2">&</span><span class="ident">Path</span>)
<span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">HashMap</span><span class="op"><</span><span class="ident">String</span>, <span class="ident">AwsCredentials</span><span class="op">></span>, <span class="ident">CredentialsError</span><span class="op">></span> {
<span class="kw">match</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="ident">location</span>) {
<span class="prelude-val">Err</span>(_) <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(<span class="string">"Could not stat credentials file."</span>)),
<span class="prelude-val">Ok</span>(<span class="ident">metadata</span>) <span class="op">=></span> {
<span class="kw">if</span> <span class="op">!</span><span class="ident">metadata</span>.<span class="ident">is_file</span>() {
<span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(<span class="string">"Could not open file."</span>));
}
}
};
<span class="kw">let</span> <span class="ident">file</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">File</span>::<span class="ident">open</span>(<span class="ident">location</span>));
<span class="kw">let</span> <span class="ident">profile_regex</span> <span class="op">=</span> <span class="ident">Regex</span>::<span class="ident">new</span>(<span class="string">r"^\[([^\]]+)\]$"</span>).<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">profiles</span>: <span class="ident">HashMap</span><span class="op"><</span><span class="ident">String</span>, <span class="ident">AwsCredentials</span><span class="op">></span> <span class="op">=</span> <span class="ident">HashMap</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">access_key_id</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> <span class="op">=</span> <span class="prelude-val">None</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">secret_access_key</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> <span class="op">=</span> <span class="prelude-val">None</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">profile_name</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> <span class="op">=</span> <span class="prelude-val">None</span>;
<span class="kw">let</span> <span class="ident">file_lines</span> <span class="op">=</span> <span class="ident">BufReader</span>::<span class="ident">new</span>(<span class="kw-2">&</span><span class="ident">file</span>);
<span class="kw">for</span> <span class="ident">line</span> <span class="kw">in</span> <span class="ident">file_lines</span>.<span class="ident">lines</span>() {
<span class="kw">let</span> <span class="ident">unwrapped_line</span> : <span class="ident">String</span> <span class="op">=</span> <span class="ident">line</span>.<span class="ident">unwrap</span>();
<span class="kw">if</span> <span class="ident">unwrapped_line</span>.<span class="ident">starts_with</span>(<span class="string">'#'</span>) {
<span class="comment">// Ignore comments</span>
<span class="kw">continue</span>;
}
<span class="comment">// handle the opening of named profile blocks</span>
<span class="kw">if</span> <span class="ident">profile_regex</span>.<span class="ident">is_match</span>(<span class="kw-2">&</span><span class="ident">unwrapped_line</span>) {
<span class="kw">if</span> <span class="ident">profile_name</span>.<span class="ident">is_some</span>() <span class="op">&&</span> <span class="ident">access_key_id</span>.<span class="ident">is_some</span>() <span class="op">&&</span> <span class="ident">secret_access_key</span>.<span class="ident">is_some</span>() {
<span class="kw">let</span> <span class="ident">creds</span> <span class="op">=</span> <span class="ident">AwsCredentials</span>::<span class="ident">new</span>(
<span class="ident">access_key_id</span>.<span class="ident">unwrap</span>(),
<span class="ident">secret_access_key</span>.<span class="ident">unwrap</span>(),
<span class="prelude-val">None</span>,
<span class="ident">in_ten_minutes</span>());
<span class="ident">profiles</span>.<span class="ident">insert</span>(<span class="ident">profile_name</span>.<span class="ident">unwrap</span>(), <span class="ident">creds</span>);
}
<span class="ident">access_key_id</span> <span class="op">=</span> <span class="prelude-val">None</span>;
<span class="ident">secret_access_key</span> <span class="op">=</span> <span class="prelude-val">None</span>;
<span class="kw">let</span> <span class="ident">caps</span> <span class="op">=</span> <span class="ident">profile_regex</span>.<span class="ident">captures</span>(<span class="kw-2">&</span><span class="ident">unwrapped_line</span>).<span class="ident">unwrap</span>();
<span class="ident">profile_name</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">caps</span>.<span class="ident">at</span>(<span class="number">1</span>).<span class="ident">unwrap</span>().<span class="ident">to_string</span>());
<span class="kw">continue</span>;
}
<span class="comment">// otherwise look for key=value pairs we care about</span>
<span class="kw">let</span> <span class="ident">lower_case_line</span> <span class="op">=</span> <span class="ident">unwrapped_line</span>.<span class="ident">to_ascii_lowercase</span>().<span class="ident">to_string</span>();
<span class="kw">if</span> <span class="ident">lower_case_line</span>.<span class="ident">contains</span>(<span class="string">"aws_access_key_id"</span>) <span class="op">&&</span>
<span class="ident">access_key_id</span>.<span class="ident">is_none</span>()
{
<span class="kw">let</span> <span class="ident">v</span>: <span class="ident">Vec</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">str</span><span class="op">></span> <span class="op">=</span> <span class="ident">unwrapped_line</span>.<span class="ident">split</span>(<span class="string">'='</span>).<span class="ident">collect</span>();
<span class="kw">if</span> <span class="op">!</span><span class="ident">v</span>.<span class="ident">is_empty</span>() {
<span class="ident">access_key_id</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">v</span>[<span class="number">1</span>].<span class="ident">trim_matches</span>(<span class="string">' '</span>).<span class="ident">to_string</span>());
}
} <span class="kw">else</span> <span class="kw">if</span> <span class="ident">lower_case_line</span>.<span class="ident">contains</span>(<span class="string">"aws_secret_access_key"</span>) <span class="op">&&</span>
<span class="ident">secret_access_key</span>.<span class="ident">is_none</span>()
{
<span class="kw">let</span> <span class="ident">v</span>: <span class="ident">Vec</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">str</span><span class="op">></span> <span class="op">=</span> <span class="ident">unwrapped_line</span>.<span class="ident">split</span>(<span class="string">'='</span>).<span class="ident">collect</span>();
<span class="kw">if</span> <span class="op">!</span><span class="ident">v</span>.<span class="ident">is_empty</span>() {
<span class="ident">secret_access_key</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">v</span>[<span class="number">1</span>].<span class="ident">trim_matches</span>(<span class="string">' '</span>).<span class="ident">to_string</span>());
}
}
}
<span class="kw">if</span> <span class="ident">profile_name</span>.<span class="ident">is_some</span>() <span class="op">&&</span> <span class="ident">access_key_id</span>.<span class="ident">is_some</span>() <span class="op">&&</span> <span class="ident">secret_access_key</span>.<span class="ident">is_some</span>() {
<span class="kw">let</span> <span class="ident">creds</span> <span class="op">=</span> <span class="ident">AwsCredentials</span>::<span class="ident">new</span>(
<span class="ident">access_key_id</span>.<span class="ident">unwrap</span>(),
<span class="ident">secret_access_key</span>.<span class="ident">unwrap</span>(),
<span class="prelude-val">None</span>,
<span class="ident">in_ten_minutes</span>());
<span class="ident">profiles</span>.<span class="ident">insert</span>(<span class="ident">profile_name</span>.<span class="ident">unwrap</span>(), <span class="ident">creds</span>);
}
<span class="kw">if</span> <span class="ident">profiles</span>.<span class="ident">is_empty</span>() {
<span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(<span class="string">"No credentials found."</span>));
}
<span class="prelude-val">Ok</span>(<span class="ident">profiles</span>)
}
<span class="kw">impl</span> <span class="ident">AwsCredentialsProvider</span> <span class="kw">for</span> <span class="ident">IamProvider</span> {
<span class="kw">fn</span> <span class="ident">credentials</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AwsCredentials</span>, <span class="ident">CredentialsError</span><span class="op">></span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">address</span> : <span class="ident">String</span> <span class="op">=</span>
<span class="string">"http://169.254.169.254/latest/meta-data/iam/security-credentials"</span>.<span class="ident">to_string</span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">client</span> <span class="op">=</span> <span class="ident">Client</span>::<span class="ident">new</span>();
<span class="ident">client</span>.<span class="ident">set_read_timeout</span>(<span class="prelude-val">Some</span>(<span class="ident">StdDuration</span>::<span class="ident">from_secs</span>(<span class="number">15</span>)));
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">response</span>;
<span class="kw">match</span> <span class="ident">client</span>.<span class="ident">get</span>(<span class="kw-2">&</span><span class="ident">address</span>)
.<span class="ident">header</span>(<span class="ident">Connection</span>::<span class="ident">close</span>()).<span class="ident">send</span>() {
<span class="prelude-val">Err</span>(_) <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(
<span class="string">"Couldn't connect to metadata service"</span>)),
<span class="prelude-val">Ok</span>(<span class="ident">received_response</span>) <span class="op">=></span> <span class="ident">response</span> <span class="op">=</span> <span class="ident">received_response</span>
};
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">body</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">new</span>();
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Err</span>(_) <span class="op">=</span> <span class="ident">response</span>.<span class="ident">read_to_string</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">body</span>) {
<span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(
<span class="string">"Didn't get a parsable response body from metadata service"</span>));
}
<span class="ident">address</span>.<span class="ident">push_str</span>(<span class="string">"/"</span>);
<span class="ident">address</span>.<span class="ident">push_str</span>(<span class="kw-2">&</span><span class="ident">body</span>);
<span class="ident">body</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">new</span>();
<span class="kw">match</span> <span class="ident">client</span>.<span class="ident">get</span>(<span class="kw-2">&</span><span class="ident">address</span>)
.<span class="ident">header</span>(<span class="ident">Connection</span>::<span class="ident">close</span>()).<span class="ident">send</span>() {
<span class="prelude-val">Err</span>(_) <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(
<span class="string">"Didn't get a parseable response body from instance role details"</span>)),
<span class="prelude-val">Ok</span>(<span class="ident">received_response</span>) <span class="op">=></span> <span class="ident">response</span> <span class="op">=</span> <span class="ident">received_response</span>
};
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Err</span>(_) <span class="op">=</span> <span class="ident">response</span>.<span class="ident">read_to_string</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">body</span>) {
<span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(<span class="string">"Had issues with reading iam role response: {}"</span>));
}
<span class="kw">let</span> <span class="ident">json_object</span>: <span class="ident">Value</span>;
<span class="kw">match</span> <span class="ident">from_str</span>(<span class="kw-2">&</span><span class="ident">body</span>) {
<span class="prelude-val">Err</span>(_) <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(<span class="string">"Couldn't parse metadata response body."</span>)),
<span class="prelude-val">Ok</span>(<span class="ident">val</span>) <span class="op">=></span> <span class="ident">json_object</span> <span class="op">=</span> <span class="ident">val</span>
};
<span class="kw">let</span> <span class="ident">access_key_id</span>;
<span class="kw">match</span> <span class="ident">json_object</span>.<span class="ident">find</span>(<span class="string">"AccessKeyId"</span>) {
<span class="prelude-val">None</span> <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(<span class="string">"Couldn't find AccessKeyId in response."</span>)),
<span class="prelude-val">Some</span>(<span class="ident">val</span>) <span class="op">=></span> <span class="ident">access_key_id</span> <span class="op">=</span>
<span class="ident">val</span>.<span class="ident">as_str</span>()
.<span class="ident">expect</span>(<span class="string">"AccessKeyId value was not a string"</span>)
.<span class="ident">to_owned</span>()
.<span class="ident">replace</span>(<span class="string">"\""</span>, <span class="string">""</span>)
};
<span class="kw">let</span> <span class="ident">secret_access_key</span>;
<span class="kw">match</span> <span class="ident">json_object</span>.<span class="ident">find</span>(<span class="string">"SecretAccessKey"</span>) {
<span class="prelude-val">None</span> <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(
<span class="string">"Couldn't find SecretAccessKey in response."</span>)),
<span class="prelude-val">Some</span>(<span class="ident">val</span>) <span class="op">=></span> <span class="ident">secret_access_key</span> <span class="op">=</span>
<span class="ident">val</span>.<span class="ident">as_str</span>()
.<span class="ident">expect</span>(<span class="string">"SecretAccessKey value was not a string"</span>)
.<span class="ident">to_owned</span>()
.<span class="ident">replace</span>(<span class="string">"\""</span>, <span class="string">""</span>)
};
<span class="kw">let</span> <span class="ident">expiration</span>;
<span class="kw">match</span> <span class="ident">json_object</span>.<span class="ident">find</span>(<span class="string">"Expiration"</span>) {
<span class="prelude-val">None</span> <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(<span class="string">"Couldn't find Expiration in response."</span>)),
<span class="prelude-val">Some</span>(<span class="ident">val</span>) <span class="op">=></span> <span class="ident">expiration</span> <span class="op">=</span>
<span class="ident">val</span>.<span class="ident">as_str</span>()
.<span class="ident">expect</span>(<span class="string">"Expiration value was not a string"</span>)
.<span class="ident">to_owned</span>()
.<span class="ident">replace</span>(<span class="string">"\""</span>, <span class="string">""</span>)
};
<span class="kw">let</span> <span class="ident">expiration_time</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">expiration</span>.<span class="ident">parse</span>());
<span class="kw">let</span> <span class="ident">token_from_response</span>;
<span class="kw">match</span> <span class="ident">json_object</span>.<span class="ident">find</span>(<span class="string">"Token"</span>) {
<span class="prelude-val">None</span> <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CredentialsError</span>::<span class="ident">new</span>(<span class="string">"Couldn't find Token in response."</span>)),
<span class="prelude-val">Some</span>(<span class="ident">val</span>) <span class="op">=></span> <span class="ident">token_from_response</span> <span class="op">=</span>
<span class="ident">val</span>.<span class="ident">as_str</span>()
.<span class="ident">expect</span>(<span class="string">"Token value was not a string"</span>)
.<span class="ident">to_owned</span>()
.<span class="ident">replace</span>(<span class="string">"\""</span>, <span class="string">""</span>)
};
<span class="prelude-val">Ok</span>(<span class="ident">AwsCredentials</span>::<span class="ident">new</span>(
<span class="ident">access_key_id</span>,
<span class="ident">secret_access_key</span>,
<span class="prelude-val">Some</span>(<span class="ident">token_from_response</span>),
<span class="ident">expiration_time</span>))
}
}
<span class="kw">impl</span> <span class="op"><</span><span class="ident">P</span>: <span class="ident">AwsCredentialsProvider</span><span class="op">></span> <span class="ident">AutoRefreshingProviderSync</span><span class="op"><</span><span class="ident">P</span><span class="op">></span> {
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">with_mutex</span>(<span class="ident">provider</span>: <span class="ident">P</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AutoRefreshingProviderSync</span><span class="op"><</span><span class="ident">P</span><span class="op">></span>, <span class="ident">CredentialsError</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">creds</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">provider</span>.<span class="ident">credentials</span>());
<span class="prelude-val">Ok</span>(<span class="ident">BaseAutoRefreshingProvider</span> {
<span class="ident">credentials_provider</span>: <span class="ident">provider</span>,
<span class="ident">cached_credentials</span>: <span class="ident">Mutex</span>::<span class="ident">new</span>(<span class="ident">creds</span>)
})
}
}
<span class="kw">impl</span> <span class="op"><</span><span class="ident">P</span>: <span class="ident">AwsCredentialsProvider</span><span class="op">></span> <span class="ident">AwsCredentialsProvider</span> <span class="kw">for</span>
<span class="ident">BaseAutoRefreshingProvider</span><span class="op"><</span><span class="ident">P</span>, <span class="ident">Mutex</span><span class="op"><</span><span class="ident">AwsCredentials</span><span class="op">>></span> {
<span class="kw">fn</span> <span class="ident">credentials</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AwsCredentials</span>, <span class="ident">CredentialsError</span><span class="op">></span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">creds</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">cached_credentials</span>.<span class="ident">lock</span>().<span class="ident">unwrap</span>();
<span class="kw">if</span> <span class="ident">creds</span>.<span class="ident">credentials_are_expired</span>() {
<span class="kw-2">*</span><span class="ident">creds</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">credentials_provider</span>.<span class="ident">credentials</span>());
}
<span class="prelude-val">Ok</span>(<span class="ident">creds</span>.<span class="ident">clone</span>())
}
}
<span class="kw">impl</span> <span class="op"><</span><span class="ident">P</span>: <span class="ident">AwsCredentialsProvider</span><span class="op">></span> <span class="ident">AutoRefreshingProvider</span><span class="op"><</span><span class="ident">P</span><span class="op">></span> {
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">with_refcell</span>(<span class="ident">provider</span>: <span class="ident">P</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AutoRefreshingProvider</span><span class="op"><</span><span class="ident">P</span><span class="op">></span>, <span class="ident">CredentialsError</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">creds</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">provider</span>.<span class="ident">credentials</span>());
<span class="prelude-val">Ok</span>(<span class="ident">BaseAutoRefreshingProvider</span> {
<span class="ident">credentials_provider</span>: <span class="ident">provider</span>,
<span class="ident">cached_credentials</span>: <span class="ident">RefCell</span>::<span class="ident">new</span>(<span class="ident">creds</span>)
})
}
}
<span class="kw">impl</span> <span class="op"><</span><span class="ident">P</span>: <span class="ident">AwsCredentialsProvider</span><span class="op">></span> <span class="ident">AwsCredentialsProvider</span> <span class="kw">for</span> <span class="ident">BaseAutoRefreshingProvider</span><span class="op"><</span><span class="ident">P</span>, <span class="ident">RefCell</span><span class="op"><</span><span class="ident">AwsCredentials</span><span class="op">>></span> {
<span class="kw">fn</span> <span class="ident">credentials</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AwsCredentials</span>, <span class="ident">CredentialsError</span><span class="op">></span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">creds</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">cached_credentials</span>.<span class="ident">borrow_mut</span>();
<span class="kw">if</span> <span class="ident">creds</span>.<span class="ident">credentials_are_expired</span>() {
<span class="kw-2">*</span><span class="ident">creds</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">credentials_provider</span>.<span class="ident">credentials</span>());
}
<span class="prelude-val">Ok</span>(<span class="ident">creds</span>.<span class="ident">clone</span>())
}
}
<span class="kw">impl</span> <span class="ident">DefaultCredentialsProvider</span> {
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">parameters_provider</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">ParametersProvider</span><span class="op">></span>)
<span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">DefaultCredentialsProvider</span>, <span class="ident">CredentialsError</span><span class="op">></span> {
<span class="prelude-val">Ok</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="ident">AutoRefreshingProvider</span>::<span class="ident">with_refcell</span>(<span class="ident">ChainProvider</span>::<span class="ident">new</span>(<span class="ident">parameters_provider</span>))))
}
}
<span class="kw">impl</span> <span class="ident">DefaultCredentialsProviderSync</span> {
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">parameters_provider</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">ParametersProvider</span><span class="op">></span>)
<span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">DefaultCredentialsProviderSync</span>, <span class="ident">CredentialsError</span><span class="op">></span> {
<span class="prelude-val">Ok</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="ident">AutoRefreshingProviderSync</span>::<span class="ident">with_mutex</span>(<span class="ident">ChainProvider</span>::<span class="ident">new</span>(<span class="ident">parameters_provider</span>))))
}
}
<span class="kw">impl</span> <span class="ident">AwsCredentialsProvider</span> <span class="kw">for</span> <span class="ident">ChainProvider</span> {
<span class="kw">fn</span> <span class="ident">credentials</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AwsCredentials</span>, <span class="ident">CredentialsError</span><span class="op">></span> {
<span class="kw">match</span> <span class="self">self</span>.<span class="ident">parameters_provider</span> {
<span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="ident">provider</span>) <span class="op">=></span> <span class="ident">provider</span>.<span class="ident">credentials</span>(),
<span class="prelude-val">None</span> <span class="op">=></span> {
<span class="kw">match</span> <span class="self">self</span>.<span class="ident">environment_provider</span> {
<span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="ident">provider</span>) <span class="op">=></span> {
<span class="kw">match</span> <span class="ident">provider</span>.<span class="ident">credentials</span>() {
<span class="prelude-val">Ok</span>(<span class="ident">creds</span>) <span class="op">=></span> <span class="prelude-val">Ok</span>(<span class="ident">creds</span>),
<span class="prelude-val">Err</span>(_) <span class="op">=></span> {
<span class="kw">match</span> <span class="self">self</span>.<span class="ident">profile_provider</span> {
<span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="ident">provider</span>) <span class="op">=></span> <span class="ident">provider</span>.<span class="ident">credentials</span>(),
<span class="prelude-val">None</span> <span class="op">=></span> <span class="ident">IamProvider</span>.<span class="ident">credentials</span>()
}
}
}
}
<span class="prelude-val">None</span> <span class="op">=></span> {
<span class="kw">match</span> <span class="self">self</span>.<span class="ident">profile_provider</span> {
<span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="ident">provider</span>) <span class="op">=></span> <span class="ident">provider</span>.<span class="ident">credentials</span>(),
<span class="prelude-val">None</span> <span class="op">=></span> <span class="ident">IamProvider</span>.<span class="ident">credentials</span>()
}
}
}
}
}
}
}
<span class="kw">impl</span> <span class="ident">ChainProvider</span> {
<span class="doccomment">/// Create a new `ChainProvider` using a `ParametersProvider` with the default settings.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">parameters_provider</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">ParametersProvider</span><span class="op">></span>) <span class="op">-></span> <span class="ident">ChainProvider</span> {
<span class="ident">ChainProvider</span> {
<span class="ident">parameters_provider</span>: <span class="ident">parameters_provider</span>,
<span class="ident">environment_provider</span>: <span class="ident">EnvironmentProvider</span>::<span class="ident">new</span>().<span class="ident">ok</span>(),
<span class="ident">profile_provider</span>: <span class="ident">ProfileProvider</span>::<span class="ident">new</span>().<span class="ident">ok</span>(),
}
}
<span class="doccomment">/// Create a new `ChainProvider` using the provided `ParametersProvider`.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">with_parameters_provider</span>(<span class="kw-2">&</span><span class="self">self</span>,
<span class="ident">parameters_provider</span>: <span class="ident">ParametersProvider</span>
) <span class="op">-></span> <span class="ident">ChainProvider</span> {
<span class="ident">ChainProvider</span> {
<span class="ident">parameters_provider</span>: <span class="prelude-val">Some</span>(<span class="ident">parameters_provider</span>),
<span class="ident">environment_provider</span>: <span class="prelude-val">None</span>,
<span class="ident">profile_provider</span>: <span class="prelude-val">None</span>,
}
}
<span class="doccomment">/// Create a new `ChainProvider` using the provided `EnvironmentProvider`.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">with_environment_provider</span>(<span class="kw-2">&</span><span class="self">self</span>,
<span class="ident">environment_provider</span>: <span class="ident">EnvironmentProvider</span>
) <span class="op">-></span> <span class="ident">ChainProvider</span> {
<span class="ident">ChainProvider</span> {
<span class="ident">parameters_provider</span>: <span class="prelude-val">None</span>,
<span class="ident">environment_provider</span>: <span class="prelude-val">Some</span>(<span class="ident">environment_provider</span>),
<span class="ident">profile_provider</span>: <span class="prelude-val">None</span>,
}
}
<span class="doccomment">/// Create a new `ChainProvider` using the provided `ProfileProvider`.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">with_profile_provider</span>(<span class="kw-2">&</span><span class="self">self</span>,
<span class="ident">profile_provider</span>: <span class="ident">ProfileProvider</span>
) <span class="op">-></span> <span class="ident">ChainProvider</span> {
<span class="ident">ChainProvider</span> {
<span class="ident">parameters_provider</span>: <span class="prelude-val">None</span>,
<span class="ident">environment_provider</span>: <span class="prelude-val">None</span>,
<span class="ident">profile_provider</span>: <span class="prelude-val">Some</span>(<span class="ident">profile_provider</span>),
}
}
}
<span class="comment">// Basic internal function for returning the time ten minutes from now.</span>
<span class="kw">fn</span> <span class="ident">in_ten_minutes</span>() <span class="op">-></span> <span class="ident">DateTime</span><span class="op"><</span><span class="ident">UTC</span><span class="op">></span> {
<span class="ident">UTC</span>::<span class="ident">now</span>() <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">600</span>)
}
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