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add support for sse redirect and http proxy settings (#1718)
* add support for sse redirect, add v2.1/track for aad auth path and v2/track for non aad auth path * use lazyAzureHttpClient in telemetry channel * add logging policy to httppipeline and handle 401,403 in response * add 307 support
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95 changes: 95 additions & 0 deletions
95
...com/microsoft/applicationinsights/internal/authentication/AzureMonitorRedirectPolicy.java
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| @@ -0,0 +1,95 @@ | ||
| /* | ||
| * ApplicationInsights-Java | ||
| * Copyright (c) Microsoft Corporation | ||
| * All rights reserved. | ||
| * | ||
| * MIT License | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy of this | ||
| * software and associated documentation files (the ""Software""), to deal in the Software | ||
| * without restriction, including without limitation the rights to use, copy, modify, merge, | ||
| * publish, distribute, sublicense, and/or sell copies of the Software, and to permit | ||
| * persons to whom the Software is furnished to do so, subject to the following conditions: | ||
| * The above copyright notice and this permission notice shall be included in all copies or | ||
| * substantial portions of the Software. | ||
| * THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, | ||
| * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR | ||
| * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE | ||
| * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | ||
| * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | ||
| * DEALINGS IN THE SOFTWARE. | ||
| */ | ||
|
|
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| package com.microsoft.applicationinsights.internal.authentication; | ||
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| import com.azure.core.http.HttpPipelineCallContext; | ||
| import com.azure.core.http.HttpPipelineNextPolicy; | ||
| import com.azure.core.http.HttpRequest; | ||
| import com.azure.core.http.HttpResponse; | ||
| import com.azure.core.http.policy.HttpPipelinePolicy; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
| import reactor.core.publisher.Mono; | ||
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| import java.net.HttpURLConnection; | ||
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| // This is a copy from Azure Monitor Open Telemetry Exporter SDK AzureMonitorRedirectPolicy | ||
| public final class AzureMonitorRedirectPolicy implements HttpPipelinePolicy { | ||
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| private static final int PERMANENT_REDIRECT_STATUS_CODE = 308; | ||
| private static final int TEMP_REDIRECT_STATUS_CODE = 307; | ||
| // Based on Stamp specific redirects design doc | ||
| private static final int MAX_REDIRECT_RETRIES = 10; | ||
| private static final Logger logger = LoggerFactory.getLogger(AzureMonitorRedirectPolicy.class); | ||
| private volatile String redirectedEndpointUrl; | ||
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| @Override | ||
| public Mono<HttpResponse> process(HttpPipelineCallContext context, HttpPipelineNextPolicy next) { | ||
| return attemptRetry(context, next, context.getHttpRequest(), 0); | ||
| } | ||
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| /** | ||
| * Function to process through the HTTP Response received in the pipeline | ||
| * and retry sending the request with new redirect url. | ||
| */ | ||
| private Mono<HttpResponse> attemptRetry(final HttpPipelineCallContext context, | ||
| final HttpPipelineNextPolicy next, | ||
| final HttpRequest originalHttpRequest, | ||
| final int retryCount) { | ||
| // make sure the context is not modified during retry, except for the URL | ||
| context.setHttpRequest(originalHttpRequest.copy()); | ||
| if (this.redirectedEndpointUrl != null) { | ||
| context.getHttpRequest().setUrl(this.redirectedEndpointUrl); | ||
| } | ||
| return next.clone().process() | ||
| .flatMap(httpResponse -> { | ||
| if (shouldRetryWithRedirect(httpResponse.getStatusCode(), retryCount)) { | ||
| String responseLocation = httpResponse.getHeaderValue("Location"); | ||
| if (responseLocation != null) { | ||
| this.redirectedEndpointUrl = responseLocation; | ||
| return attemptRetry(context, next, originalHttpRequest, retryCount + 1); | ||
| } | ||
| } | ||
| return Mono.just(httpResponse); | ||
| }); | ||
| } | ||
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| /** | ||
| * Determines if it's a valid retry scenario based on statusCode and tryCount. | ||
| * | ||
| * @param statusCode HTTP response status code | ||
| * @param tryCount Redirect retries so far | ||
| * @return True if statusCode corresponds to HTTP redirect response codes and redirect | ||
| * retries is less than {@code MAX_REDIRECT_RETRIES}. | ||
| */ | ||
| private boolean shouldRetryWithRedirect(int statusCode, int tryCount) { | ||
| if (tryCount >= MAX_REDIRECT_RETRIES) { | ||
| logger.warn("Max redirect retries limit reached:{}.", MAX_REDIRECT_RETRIES); | ||
| return false; | ||
| } | ||
| return statusCode == HttpURLConnection.HTTP_MOVED_TEMP | ||
| || statusCode == HttpURLConnection.HTTP_MOVED_PERM | ||
| || statusCode == PERMANENT_REDIRECT_STATUS_CODE | ||
| || statusCode == TEMP_REDIRECT_STATUS_CODE; | ||
| } | ||
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| } |