void SetUp()
{
environmentService = new EnvironmentService(new[] { new ExampleEnvironmentProvider() });
var policies = new Dictionary<string, IPolicy>
{
{ "A", new AlphaPolicy() },
{ "B", new BetaPolicy() },
{ "C", new AlphaPolicy() },
{ "D", new AlphaPolicy() },
{ "E", new CappaPolicy { MatchUserId = new Guid("880A00AD-5C40-447B-821A-2679E757B267")} },
{ "F", new CappaPolicy { MatchUserId = new Guid("1E9A7C0C-FC86-4516-BA42-F7232E65A12C")} },
{ "G", new DeltaPolicy() },
{ "H", new DeltaPolicy() }
};
policyService = new PolicyService(new[] { new PolicyProvider(policies) }, environmentService);
target = new DecisionService(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Test-Decisions.config"), policyService);
}
/// <summary>
/// Initializes a new instance of the <see cref="DecisionService" /> class.
/// </summary>
/// <param name="configPath">The config path.</param>
/// <param name="service">The service.</param>
public DecisionService(string configPath, PolicyService service)
{
var settings = XElement.Load(Path.GetFullPath(configPath));
// Validate the XML Formatting to prevent bad errors being thrown which have poor debugging information due to their nature
if (settings.Elements("namespace").Any() == false) throw new ConfigurationMalformedException("No namespace elements could be found.");
foreach (var expressionSection in settings.Elements("namespace"))
{
if (expressionSection.HasAttributes == false || expressionSection.Attributes().Any(a => a.Name == "name") == false)
{
throw new ConfigurationMalformedException("One of the namespace elements does not have a name attribute.");
}
var component = expressionSection.Attribute("name").Value;
var expressionProvider = new ExpressionProvider(expressionSection.Element("decisions"), service);
providers.AddOrUpdate(component, expressionProvider, (key, oldValue) => expressionProvider);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="ExpressionProvider" /> class.
/// </summary>
/// <param name="settings">The settings.</param>
/// <param name="provider">The provider.</param>
/// <exception cref="System.Configuration.ConfigurationErrorsException">All expressions must specify a unique 'key'.
/// or
/// All expressions must specify a 'value'.</exception>
/// <exception cref="ConfigurationErrorsException">All expressions must specify a unique 'key'.
/// or
/// All expressions must specify a 'value'.</exception>
public ExpressionProvider(XElement settings, PolicyService provider)
{
expressions = new Dictionary<string, string>();
this.provider = provider;
// Validate the XML Formatting to prevent bad errors being thrown which have poor debugging information due to their nature
if (settings == null || settings.Name.LocalName.Equals("decisions") == false)
{
throw new ConfigurationMalformedException("No decisions elements could be found.");
}
if (settings.Elements("item").Any() == false)
{
throw new ConfigurationMalformedException("No item elements could be found.");
}
foreach (var item in settings.Elements("item"))
{
if (item.HasAttributes == false || item.Attributes().Any(a => a.Name == "key") == false)
{
throw new ConfigurationMalformedException("One of the item elements does not have a key attribute.");
}
if (item.Attributes().Any(a => a.Name == "value") == false)
{
throw new ConfigurationMalformedException("One of the item elements does not have a value attribute.");
}
var key = item.Attribute("key");
if (key == null || string.IsNullOrWhiteSpace((string)key))
{
throw new ArgumentException("All expressions must specify a unique 'key'.", key.ToString());
}
var value = item.Attribute("value");
if (value == null || string.IsNullOrWhiteSpace((string)value))
{
throw new ArgumentException("All expressions must specify a 'value'.", value.ToString());
}
expressions[(string)key] = Reduce((string)value);
}
}
