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using System;
using System.Collections.Generic;
using System.Linq;
using StackifyLib.Utils;
namespace StackifyLib
{
/// <summary>
/// Encapsulate settings retrieval mechanism. Currently supports config file and environment variables.
/// Could be expanded to include other type of configuration servers later.
/// </summary>
public class Config
{
#if NETCORE || NETCOREX
private static Microsoft.Extensions.Configuration.IConfiguration _configuration = null;
public static void SetConfiguration(Microsoft.Extensions.Configuration.IConfiguration configuration)
{
_configuration = configuration;
}
#endif
static Config()
{
LoadSettings();
}
public static void LoadSettings()
{
try
{
CaptureServerVariables = Get("Stackify.CaptureServerVariables", bool.FalseString).Equals(bool.TrueString, StringComparison.CurrentCultureIgnoreCase);
CaptureSessionVariables = Get("Stackify.CaptureSessionVariables", bool.FalseString).Equals(bool.TrueString, StringComparison.CurrentCultureIgnoreCase);
CaptureErrorHeaders = Get("Stackify.CaptureErrorHeaders", bool.TrueString).Equals(bool.TrueString, StringComparison.CurrentCultureIgnoreCase);
CaptureErrorCookies = Get("Stackify.CaptureErrorCookies", bool.FalseString).Equals(bool.TrueString, StringComparison.CurrentCultureIgnoreCase);
ApiKey = Get("Stackify.ApiKey", ApiKey ?? string.Empty);
AppName = Get("Stackify.AppName", AppName ?? string.Empty);
Environment = Get("Stackify.Environment", Environment ?? string.Empty);
CaptureErrorHeadersWhitelist = Get("Stackify.CaptureErrorHeadersWhitelist", string.Empty);
if (string.IsNullOrEmpty(CaptureErrorHeadersWhitelist) == false)
{
ErrorHeaderGoodKeys = CaptureErrorHeadersWhitelist.Split(",".ToCharArray(), StringSplitOptions.RemoveEmptyEntries).ToList();
}
CaptureErrorHeadersBlacklist = Get("Stackify.CaptureErrorHeadersBlacklist", string.Empty);
if (string.IsNullOrEmpty(CaptureErrorHeadersBlacklist) == false)
{
ErrorHeaderBadKeys = CaptureErrorHeadersBlacklist.Split(",".ToCharArray(), StringSplitOptions.RemoveEmptyEntries).ToList();
}
CaptureErrorCookiesWhitelist = Get("Stackify.CaptureErrorCookiesWhitelist", string.Empty);
if (string.IsNullOrEmpty(CaptureErrorCookiesWhitelist) == false)
{
ErrorCookiesGoodKeys = CaptureErrorCookiesWhitelist.Split(",".ToCharArray(), StringSplitOptions.RemoveEmptyEntries).ToList();
}
CaptureErrorCookiesBlacklist = Get("Stackify.CaptureErrorCookiesBlacklist", string.Empty);
if (string.IsNullOrEmpty(CaptureErrorCookiesBlacklist) == false)
{
ErrorCookiesBadKeys = CaptureErrorCookiesBlacklist.Split(",".ToCharArray(), StringSplitOptions.RemoveEmptyEntries).ToList();
}
CaptureErrorSessionWhitelist = Get("Stackify.CaptureErrorSessionWhitelist", string.Empty);
if (string.IsNullOrEmpty(CaptureErrorSessionWhitelist) == false)
{
ErrorSessionGoodKeys = CaptureErrorSessionWhitelist.Split(",".ToCharArray(), StringSplitOptions.RemoveEmptyEntries).ToList();
}
// SF-6804: Frequent Calls to GetEC2InstanceId
var captureEc2InstanceMetadataUpdateThresholdMinutes = Get("Stackify.Ec2InstanceMetadataUpdateThresholdMinutes", string.Empty);
if (string.IsNullOrWhiteSpace(captureEc2InstanceMetadataUpdateThresholdMinutes) == false)
{
if (int.TryParse(captureEc2InstanceMetadataUpdateThresholdMinutes, out int minutes) && minutes != 0)
{
Ec2InstanceMetadataUpdateThresholdMinutes = minutes;
}
}
// SF-6204: Allow local overrides of EC2 detection
var isEc2 = Get("Stackify.IsEC2", string.Empty);
if (string.IsNullOrWhiteSpace(isEc2) == false)
{
IsEc2 = isEc2.Equals(bool.TrueString, StringComparison.CurrentCultureIgnoreCase);
}
// RT-297
var apiLog = Get("Stackify.ApiLog", string.Empty);
if (string.IsNullOrWhiteSpace(apiLog) == false)
{
ApiLog = apiLog.Equals(bool.TrueString, StringComparison.CurrentCultureIgnoreCase);
}
var loggingJsonMaxFields = Get("Stackify.Logging.JsonMaxFields", "50");
if (string.IsNullOrWhiteSpace(loggingJsonMaxFields) == false)
{
if (int.TryParse(loggingJsonMaxFields, out int maxFields) && maxFields > 0 && maxFields < 100)
{
LoggingJsonMaxFields = maxFields;
}
}
}
catch (Exception ex)
{
StackifyAPILogger.Log("#Config #LoadSettings failed", ex);
}
}
public static string ApiKey { get; set; }
public static string Environment { get; set; }
public static string AppName { get; set; }
public static List<string> ErrorHeaderGoodKeys = new List<string>();
public static List<string> ErrorHeaderBadKeys = new List<string>();
public static List<string> ErrorCookiesGoodKeys = new List<string>();
public static List<string> ErrorCookiesBadKeys = new List<string>();
public static List<string> ErrorSessionGoodKeys = new List<string>();
public static bool CaptureSessionVariables { get; set; }
public static bool CaptureServerVariables { get; set; }
public static bool CaptureErrorPostdata { get; set; }
public static bool CaptureErrorHeaders { get; set; } = true;
public static bool CaptureErrorCookies { get; set; }
public static string CaptureErrorSessionWhitelist { get; set; }
public static string CaptureErrorHeadersWhitelist { get; set; }
public static string CaptureErrorHeadersBlacklist { get; set; } = "cookie,authorization";
public static string CaptureErrorCookiesWhitelist { get; set; }
public static string CaptureErrorCookiesBlacklist { get; set; } = ".ASPXAUTH";
public static int Ec2InstanceMetadataUpdateThresholdMinutes { get; set; } = 60;
public static bool? IsEc2 { get; set; }
public static bool? ApiLog { get; set; }
public static int LoggingJsonMaxFields { get; set; } = 50;
/// <summary>
/// Attempts to fetch a setting value given the key.
/// .NET configuration file will be used first, if the key is not found, environment variable will be used next.
/// </summary>
/// <param name="key">configuration key in config file or environment variable name.</param>
/// <param name="defaultValue">If nothing is found, return optional defaultValue provided.</param>
/// <returns>string value for the requested setting key.</returns>
internal static string Get(string key, string defaultValue = null)
{
string v = null;
try
{
if (string.IsNullOrWhiteSpace(key) == false)
{
#if NETCORE || NETCOREX
if (_configuration != null)
{
var appSettings = _configuration.GetSection("Stackify");
v = appSettings[key.Replace("Stackify.", string.Empty)];
}
#endif
#if NETFULL
if (string.IsNullOrEmpty(v))
{
v = System.Configuration.ConfigurationManager.AppSettings[key];
}
#endif
if (string.IsNullOrEmpty(v))
{
v = System.Environment.GetEnvironmentVariable(key);
}
}
}
finally
{
if (v == null)
{
v = defaultValue;
}
}
return v;
}
}
}