public ConfigurationLocationsParser(IFileSystem fileSystemInstance, IEnvironmentVariableProvider environmentVariableProvider)
{
AppName = CurrentApplicationInfo.Name;
environmentVariableProvider.SetEnvironmentVariableForProcess("AppName", CurrentApplicationInfo.Name);
ConfigRoot = environmentVariableProvider.GetEnvironmentVariable(HS_CONFIG_ROOT);
if (string.IsNullOrEmpty(ConfigRoot))
{
ConfigRoot = environmentVariableProvider.PlatformSpecificPathPrefix + HS_CONFIG_ROOT_DEFAULT;
}
LoadPathsFilePath = environmentVariableProvider.GetEnvironmentVariable(HS_CONFIG_PATHS_FILE);
if (string.IsNullOrEmpty(LoadPathsFilePath))
{
LoadPathsFilePath = Path.Combine(ConfigRoot, LOADPATHS_JSON);
}
//Normalize slashes
LoadPathsFilePath = LoadPathsFilePath.Replace("\\", "/");
Trace.WriteLine("Started parsing configurations from location " + LoadPathsFilePath + "\n");
var configPathDeclarations = ParseAndValidateConfigLines(LoadPathsFilePath, fileSystemInstance);
ConfigFileDeclarations = ExpandConfigPathDeclarations(environmentVariableProvider, configPathDeclarations, environmentVariableProvider.PlatformSpecificPathPrefix).ToArray();
}
public EnvironmentInstance(IEnvironmentVariableProvider environmentVariableProvider, Func <DataCentersConfig> getDataCentersConfig)
{
_environmentVariableProvider = environmentVariableProvider;
GetDataCentersConfig = getDataCentersConfig;
Zone = environmentVariableProvider.GetEnvironmentVariable("ZONE") ?? environmentVariableProvider.GetEnvironmentVariable("DC");
_region = environmentVariableProvider.GetEnvironmentVariable("REGION");
DeploymentEnvironment = environmentVariableProvider.GetEnvironmentVariable("ENV");
ConsulAddress = environmentVariableProvider.GetEnvironmentVariable("CONSUL");
if (string.IsNullOrEmpty(Zone) || string.IsNullOrEmpty(DeploymentEnvironment))
{
throw new EnvironmentException("One or more of the following environment variables, which are required, have not been set: %ZONE%, %ENV%");
}
}
private List <ConfigFileDeclaration> ExpandConfigPathDeclarations(IEnvironmentVariableProvider environmentVariableProvider, ConfigFileDeclaration[] configs, string prefix)
{
var configPathsSet = new SortedSet <ConfigFileDeclaration>(configs);
var toSave = new List <ConfigFileDeclaration>();
var listOfErrors = new List <ErrorAggregator>();
foreach (var configPath in configPathsSet)
{
configPath.Pattern = configPath.Pattern.Replace("$(prefix)", prefix);
var list = Regex.Matches(configPath.Pattern, "%([^%]+)%")
.Cast <Match>()
.Select(match => new
{
Placehodler = match.Groups[0].Value,
Value = environmentVariableProvider.GetEnvironmentVariable(match.Groups[1].Value)
}).ToList();
var missingEnvVariables = list.Where(a => string.IsNullOrEmpty(a.Value)).Select(a => a.Placehodler.Trim('%')).ToList();
if (missingEnvVariables.Any())
{
listOfErrors.Add(new ErrorAggregator
{
Line = configPath.Pattern,
EnvVariables = missingEnvVariables
});
}
else
{
foreach (var valToReplace in list)
{
configPath.Pattern = configPath.Pattern.Replace(valToReplace.Placehodler, valToReplace.Value);
}
configPath.Pattern = configPath.Pattern.Replace("\\", "/");
//Assumes $(appName) present only once.
if (Regex.Match(configPath.Pattern, @"/?[^$/]*\$\(appName\)").Success)
{
configPath.Pattern = configPath.Pattern.Replace("$(appName)", AppName);
}
toSave.Add(configPath);
Trace.WriteLine(configPath.Pattern + " priority=" + configPath.Priority + " " + SearchOption.TopDirectoryOnly);
}
}
if (listOfErrors.Any())
{
var errorMessage = PrepareErrorMessage(listOfErrors);
throw new ConfigurationException(errorMessage);
}
return(toSave);
}
/// <summary>
/// Parses the content of environment variables file content.
/// </summary>
public EnvironmentVariablesFileReader(IFileSystem fileSystem, IEnvironmentVariableProvider environmentVariableProvider)
{
locEnvFilePath = environmentVariableProvider.GetEnvironmentVariable(HS_ENV_VARS_FILE);
if (string.IsNullOrEmpty(locEnvFilePath))
{
locEnvFilePath = string.Format(ENV_FILEPATH, environmentVariableProvider.PlatformSpecificPathPrefix);
}
EnvironmentVariableProvider = environmentVariableProvider;
FileSystem = fileSystem;
}
public async Task <ConfigItemsCollection> GetConfiguration()
{
var conf = new Dictionary <string, ConfigItem>();
foreach (var configFile in _configurationLocations.ConfigFileDeclarations.SelectMany(FindConfigFiles))
{
await ReadConfiguration(configFile, conf).ConfigureAwait(false);
}
var collection = new ConfigItemsCollection(conf.Values);
var notFoundEnvVariables = new List <string>();
foreach (var configItem in collection.Items)
{
var list = paramMatcher.Matches(configItem.RawValue)
.Cast <Match>()
.Select(match => new
{
Placehodler = "%" + match.Groups[1].Value + "%",
Value = _environmentVariableProvider.GetEnvironmentVariable(match.Groups[1].Value)
}).ToList();
if (list.Any())
{
var notFound = list.Where(a => string.IsNullOrEmpty(a.Value)).Select(a => a.Placehodler.Trim('%')).ToArray();
if (!notFound.Any())
{
foreach (var valToReplace in list)
{
configItem.Value = configItem.Value.Replace(valToReplace.Placehodler, valToReplace.Value);
}
}
else
{
notFoundEnvVariables.AddRange(notFound);
}
}
}
if (notFoundEnvVariables.Any())
{
throw new EnvironmentException("Configuration is dependent on following enviroment variables:" + string.Join("\n", notFoundEnvVariables) + "\n but they are not set.");
}
// return merged configuration
return(collection);
}
public void BaseTest(Dictionary <string, string> envDictionary, ConfigFileDeclaration[] expected)
{
environmentVariableProvider.GetEnvironmentVariable(Arg.Any <string>()).Returns(key => {
envDictionary.TryGetValue(key.Arg <string>(), out string val);
return(val);
});
var configs = new ConfigurationLocationsParser(_fileSystem, environmentVariableProvider, new CurrentApplicationInfo(""));
configs.ConfigFileDeclarations.Count.ShouldBe(expected.Length);
foreach (var pair in configs.ConfigFileDeclarations.Zip(expected, (first, second) => new { first, second }))
{
pair.first.Pattern.ShouldBe(pair.second.Pattern);
pair.first.Priority.ShouldBe(pair.second.Priority);
}
}
public EnvironmentInstance(IEnvironmentVariableProvider environmentVariableProvider, Func <DataCentersConfig> getDataCentersConfig, CurrentApplicationInfo applicationInfo)
{
_environmentVariableProvider = environmentVariableProvider;
GetDataCentersConfig = getDataCentersConfig;
Zone = environmentVariableProvider.GetEnvironmentVariable("ZONE") ?? environmentVariableProvider.GetEnvironmentVariable("DC");
_region = environmentVariableProvider.GetEnvironmentVariable("REGION");
DeploymentEnvironment = environmentVariableProvider.GetEnvironmentVariable("ENV");
ConsulAddress = environmentVariableProvider.GetEnvironmentVariable("CONSUL");
InstanceName = applicationInfo.InstanceName ?? environmentVariableProvider.GetEnvironmentVariable("GIGYA_SERVICE_INSTANCE_NAME") ?? DEFAULT_INSTANCE_NAME;
if (string.IsNullOrEmpty(Zone) || string.IsNullOrEmpty(DeploymentEnvironment))
{
throw new EnvironmentException("One or more of the following environment variables, which are required, have not been set: %ZONE%, %ENV%");
}
}
public string GetEnvironmentVariable(string name) => _environmentVariableProvider.GetEnvironmentVariable(name);
