public async Task <ExecutionData> ProcessAsync(RouteConfig routeConfig,
HttpRequest request, HttpResponse response, RouteData data)
{
request.Headers.TryGetValue("content-type", out var contentType);
var requestId = Guid.NewGuid().ToString();
var resourceId = Guid.NewGuid().ToString();
var executionData = new ExecutionData
{
RequestId = requestId,
ResourceId = resourceId,
Route = routeConfig.Route,
Request = request,
Response = response,
Data = data,
Downstream = GetDownstream(routeConfig, request, data),
Payload = await GetPayloadAsync(resourceId, routeConfig.Route, request, data),
UserId = _valueProvider.Get("@user_id", request, data),
ContentType = contentType,
};
if (_messages.TryGetValue(GetMessagesKey(routeConfig.Route), out var dataAndSchema))
{
executionData.ValidationErrors = await GetValidationErrorsAsync(routeConfig.Route,
executionData.Payload, dataAndSchema.Value);
}
return(executionData);
}
public IEnumerable <string> Get()
{
return(new [] {
_valueProvider.Get(),
_valueProvider.Get()
});
}
public IEnumerable <string> Get()
{
var builder1 = _builderFactory(1);
var builder2 = _builderFactory(2);
return(new[] {
_valueProvider.Get(),
_valueProvider.Get(),
builder1.Build(),
builder2.Build(),
});
}
/// <summary>
/// Create a copy of the request that adds a header to each request.
/// </summary>
/// <typeparam name="TContext">
/// The type of object used as a context for resolving deferred parameters.
/// </typeparam>
/// <param name="request">
/// The HTTP request.
/// </param>
/// <param name="headerName">
/// The header name.
/// </param>
/// <param name="valueProvider">
/// The header value provider.
/// </param>
/// <param name="ensureQuoted">
/// Ensure that the header value is quoted?
/// </param>
/// <returns>
/// The new <see cref="HttpRequest{TContext}"/>.
/// </returns>
public static HttpRequest <TContext> WithHeaderFromProvider <TContext>(this HttpRequest <TContext> request, string headerName, IValueProvider <TContext, string> valueProvider, bool ensureQuoted = false)
{
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
if (String.IsNullOrWhiteSpace(headerName))
{
throw new ArgumentException("Argument cannot be null, empty, or composed entirely of whitespace: 'name'.", nameof(headerName));
}
if (valueProvider == null)
{
throw new ArgumentNullException(nameof(valueProvider));
}
return(request.WithRequestAction((requestMessage, context) =>
{
requestMessage.Headers.Remove(headerName);
string headerValue = valueProvider.Get(context);
if (headerValue == null)
{
return;
}
if (ensureQuoted)
{
headerValue = EnsureQuoted(headerValue);
}
requestMessage.Headers.Add(headerName, headerValue);
}));
}
/// <summary>
/// Wrap the specified value provider in a value provider that utilises a more-derived context type.
/// </summary>
/// <typeparam name="TDerivedContext">
/// The more-derived type used by the new provider as a context for each request.
/// </typeparam>
/// <returns>
/// The outer (converting) value provider.
/// </returns>
public IValueProvider <TDerivedContext, TValue> ContextTo <TDerivedContext>()
where TDerivedContext : TContext
{
// Can't close over members of structs.
IValueProvider <TContext, TValue> valueProvider = ValueProvider;
return(ValueProvider <TDerivedContext> .FromSelector(
context => valueProvider.Get(context)
));
}
public PayloadSchema Transform(string payload, string resourceId, Route route, HttpRequest request, RouteData data)
{
var payloadKey = GetPayloadKey(route);
var command = _payloads.ContainsKey(payloadKey)
? GetObjectFromPayload(route, payload)
: GetObject(payload);
var commandValues = (IDictionary <string, object>)command;
if (!string.IsNullOrWhiteSpace(resourceId))
{
var resourceIdProperty = string.IsNullOrWhiteSpace(route.ResourceId?.Property)
? _options.ResourceId.Property
: route.ResourceId?.Property;
if (string.IsNullOrWhiteSpace(resourceIdProperty))
{
resourceIdProperty = ResourceIdProperty;
}
commandValues[resourceIdProperty] = resourceId;
}
foreach (var setter in route.Bind ?? Enumerable.Empty <string>())
{
var keyAndValue = setter.Split(':');
var key = keyAndValue[0];
var value = keyAndValue[1];
commandValues[key] = _valueProvider.Get(value, request, data);
var routeValue = value.Length > 2 ? value.Substring(1, value.Length - 2) : string.Empty;
if (data.Values.TryGetValue(routeValue, out var dataValue))
{
commandValues[key] = dataValue;
}
}
foreach (var transformation in route.Transform ?? Enumerable.Empty <string>())
{
var beforeAndAfter = transformation.Split(':');
var before = beforeAndAfter[0];
var after = beforeAndAfter[1];
if (!commandValues.TryGetValue(before, out var value))
{
continue;
}
commandValues.Remove(before);
commandValues.Add(after, value);
}
_payloads.TryGetValue(payloadKey, out var payloadSchema);
return(new PayloadSchema(command as ExpandoObject, payloadSchema?.Schema));
}
public string GetDownstream(RouteConfig routeConfig, HttpRequest request, RouteData data)
{
if (string.IsNullOrWhiteSpace(routeConfig.Downstream))
{
return(null);
}
var stringBuilder = new StringBuilder();
var downstream = routeConfig.Downstream;
stringBuilder.Append(downstream);
if (downstream.Contains("@"))
{
foreach (var token in _valueProvider.Tokens)
{
var tokenName = $"@{token}";
stringBuilder.Replace(tokenName, _valueProvider.Get(tokenName, request, data));
}
}
foreach (var(key, value) in data.Values)
{
if (value is null)
{
continue;
}
if (key is "url")
{
stringBuilder.Append($"/{value}");
continue;
}
stringBuilder.Replace($"{{{key}}}", value.ToString());
}
if (_options.PassQueryString == false || routeConfig.Route.PassQueryString == false)
{
return(stringBuilder.ToString());
}
var queryString = request.QueryString.ToString();
if (downstream.Contains("?") && !string.IsNullOrWhiteSpace(queryString))
{
queryString = $"&{queryString.Substring(1, queryString.Length - 1)}";
}
stringBuilder.Append(queryString);
return(stringBuilder.ToString());
}
public string RequestValueAndSaving(string name, IValueValidator validator, IValueProvider valueProvider)
{
var result = validator.Validate(valueProvider?.Get(name));
while (!result.IsValid)
{
Console.WriteLine(Resources.PleaseEnterValue, name);
result = validator.Validate(Console.ReadLine());
if (!result.IsValid)
{
Console.WriteLine(result.Value);
continue;
}
RequestValueSaving(name, result.Value, valueProvider);
}
return(result.Value);
}
/// <summary>
/// Wrap the value provider in a value provider that converts its value to a string.
/// </summary>
/// <returns>
/// The outer (converting) value provider.
/// </returns>
/// <remarks>
/// If the underlying value is <c>null</c> then the converted string value will be <c>null</c>, too.
/// </remarks>
public IValueProvider <TContext, string> ValueToString()
{
// Special-case conversion to save on allocations.
if (typeof(TValue) == typeof(string))
{
return((IValueProvider <TContext, string>)ValueProvider);
}
// Can't close over members of structs.
IValueProvider <TContext, TValue> valueProvider = ValueProvider;
return(ValueProvider <TContext> .FromSelector(
context =>
{
TValue value = valueProvider.Get(context);
return value != null ? value.ToString() : null;
}
));
}
private async Task <Result <string, string> > TryResolveAsync(
string input,
ValueAddress address
)
{
try
{
var entity = await provider
.Get(address.EntityAddress);
if (entity == null)
{
return(new Result(error: $"Entity not found: {address.EntityAddress}"));
}
string GetEntityPropertyValue(IEnumerable <string> path)
{
var _path = string.Join(".", path);
var value = entity.SelectToken(_path);
if (value == null)
{
throw new Exception($"No value at path: {_path}");
}
return(value.ToString());
}
var output = input.Replace(
oldValue: address.ToInterpolationString(),
newValue: GetEntityPropertyValue(address.PropertyPath),
comparisonType: StringComparison.OrdinalIgnoreCase
);
return(new Result(ok: output));
}
catch (Exception ex)
{
return(new Result(error: ex.Message));
}
}
