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| 1 | +// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. |
| 2 | +// SPDX-License-Identifier: Apache-2.0 |
| 3 | + |
| 4 | +// snippet-start:[CloudWatchLogs.dotnetv3.CloudWatchLogsWrapper] |
| 5 | +using Amazon.CloudWatchLogs; |
| 6 | +using Amazon.CloudWatchLogs.Model; |
| 7 | +using Microsoft.Extensions.Logging; |
| 8 | + |
| 9 | +namespace CloudWatchLogsActions; |
| 10 | + |
| 11 | +/// <summary> |
| 12 | +/// Wrapper class for Amazon CloudWatch Logs operations. |
| 13 | +/// </summary> |
| 14 | +public class CloudWatchLogsWrapper |
| 15 | +{ |
| 16 | + private readonly IAmazonCloudWatchLogs _amazonCloudWatchLogs; |
| 17 | + private readonly ILogger<CloudWatchLogsWrapper> _logger; |
| 18 | + |
| 19 | + /// <summary> |
| 20 | + /// Constructor for the CloudWatchLogsWrapper class. |
| 21 | + /// </summary> |
| 22 | + /// <param name="amazonCloudWatchLogs">The injected CloudWatch Logs client.</param> |
| 23 | + /// <param name="logger">The injected logger.</param> |
| 24 | + public CloudWatchLogsWrapper(IAmazonCloudWatchLogs amazonCloudWatchLogs, ILogger<CloudWatchLogsWrapper> logger) |
| 25 | + { |
| 26 | + _amazonCloudWatchLogs = amazonCloudWatchLogs; |
| 27 | + _logger = logger; |
| 28 | + } |
| 29 | + |
| 30 | + // snippet-start:[CloudWatchLogs.dotnetv3.StartQuery] |
| 31 | + /// <summary> |
| 32 | + /// Starts a CloudWatch Logs Insights query. |
| 33 | + /// </summary> |
| 34 | + /// <param name="logGroupName">The name of the log group to query.</param> |
| 35 | + /// <param name="queryString">The CloudWatch Logs Insights query string.</param> |
| 36 | + /// <param name="startTime">The start time for the query (seconds since epoch).</param> |
| 37 | + /// <param name="endTime">The end time for the query (seconds since epoch).</param> |
| 38 | + /// <param name="limit">The maximum number of results to return.</param> |
| 39 | + /// <returns>The query ID if successful, null otherwise.</returns> |
| 40 | + public async Task<string?> StartQueryAsync( |
| 41 | + string logGroupName, |
| 42 | + string queryString, |
| 43 | + long startTime, |
| 44 | + long endTime, |
| 45 | + int limit = 10000) |
| 46 | + { |
| 47 | + try |
| 48 | + { |
| 49 | + var request = new StartQueryRequest |
| 50 | + { |
| 51 | + LogGroupName = logGroupName, |
| 52 | + QueryString = queryString, |
| 53 | + StartTime = startTime, |
| 54 | + EndTime = endTime, |
| 55 | + Limit = limit |
| 56 | + }; |
| 57 | + |
| 58 | + var response = await _amazonCloudWatchLogs.StartQueryAsync(request); |
| 59 | + return response.QueryId; |
| 60 | + } |
| 61 | + catch (InvalidParameterException ex) |
| 62 | + { |
| 63 | + _logger.LogError($"Invalid parameter for query: {ex.Message}"); |
| 64 | + return null; |
| 65 | + } |
| 66 | + catch (ResourceNotFoundException ex) |
| 67 | + { |
| 68 | + _logger.LogError($"Log group not found: {ex.Message}"); |
| 69 | + return null; |
| 70 | + } |
| 71 | + catch (Exception ex) |
| 72 | + { |
| 73 | + _logger.LogError($"An error occurred while starting query: {ex.Message}"); |
| 74 | + return null; |
| 75 | + } |
| 76 | + } |
| 77 | + // snippet-end:[CloudWatchLogs.dotnetv3.StartQuery] |
| 78 | + |
| 79 | + // snippet-start:[CloudWatchLogs.dotnetv3.GetQueryResults] |
| 80 | + /// <summary> |
| 81 | + /// Gets the results of a CloudWatch Logs Insights query. |
| 82 | + /// </summary> |
| 83 | + /// <param name="queryId">The ID of the query.</param> |
| 84 | + /// <returns>The query results response.</returns> |
| 85 | + public async Task<GetQueryResultsResponse?> GetQueryResultsAsync(string queryId) |
| 86 | + { |
| 87 | + try |
| 88 | + { |
| 89 | + var request = new GetQueryResultsRequest |
| 90 | + { |
| 91 | + QueryId = queryId |
| 92 | + }; |
| 93 | + |
| 94 | + var response = await _amazonCloudWatchLogs.GetQueryResultsAsync(request); |
| 95 | + return response; |
| 96 | + } |
| 97 | + catch (ResourceNotFoundException ex) |
| 98 | + { |
| 99 | + _logger.LogError($"Query not found: {ex.Message}"); |
| 100 | + return null; |
| 101 | + } |
| 102 | + catch (Exception ex) |
| 103 | + { |
| 104 | + _logger.LogError($"An error occurred while getting query results: {ex.Message}"); |
| 105 | + return null; |
| 106 | + } |
| 107 | + } |
| 108 | + // snippet-end:[CloudWatchLogs.dotnetv3.GetQueryResults] |
| 109 | + |
| 110 | + // snippet-start:[CloudWatchLogs.dotnetv3.PutLogEvents] |
| 111 | + /// <summary> |
| 112 | + /// Puts log events to a CloudWatch Logs log stream. |
| 113 | + /// </summary> |
| 114 | + /// <param name="logGroupName">The name of the log group.</param> |
| 115 | + /// <param name="logStreamName">The name of the log stream.</param> |
| 116 | + /// <param name="logEvents">The list of log events to put.</param> |
| 117 | + /// <returns>True if successful, false otherwise.</returns> |
| 118 | + public async Task<bool> PutLogEventsAsync( |
| 119 | + string logGroupName, |
| 120 | + string logStreamName, |
| 121 | + List<InputLogEvent> logEvents) |
| 122 | + { |
| 123 | + try |
| 124 | + { |
| 125 | + var request = new PutLogEventsRequest |
| 126 | + { |
| 127 | + LogGroupName = logGroupName, |
| 128 | + LogStreamName = logStreamName, |
| 129 | + LogEvents = logEvents |
| 130 | + }; |
| 131 | + |
| 132 | + await _amazonCloudWatchLogs.PutLogEventsAsync(request); |
| 133 | + return true; |
| 134 | + } |
| 135 | + catch (ResourceNotFoundException ex) |
| 136 | + { |
| 137 | + _logger.LogError($"Log group or stream not found: {ex.Message}"); |
| 138 | + return false; |
| 139 | + } |
| 140 | + catch (Exception ex) |
| 141 | + { |
| 142 | + _logger.LogError($"An error occurred while putting log events: {ex.Message}"); |
| 143 | + return false; |
| 144 | + } |
| 145 | + } |
| 146 | + // snippet-end:[CloudWatchLogs.dotnetv3.PutLogEvents] |
| 147 | +} |
| 148 | +// snippet-end:[CloudWatchLogs.dotnetv3.CloudWatchLogsWrapper] |
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