初始化

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2025-11-26 11:32:30 +08:00
commit 2163829349
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using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Formatting;
using System.Net.Http.Headers;
using System.Web.Http.Description;
using System.Xml.Linq;
using Newtonsoft.Json;
namespace MQTTServerSideAPI.Areas.HelpPage
{
/// <summary>
/// This class will generate the samples for the help page.
/// </summary>
public class HelpPageSampleGenerator
{
/// <summary>
/// Initializes a new instance of the <see cref="HelpPageSampleGenerator"/> class.
/// </summary>
public HelpPageSampleGenerator()
{
ActualHttpMessageTypes = new Dictionary<HelpPageSampleKey, Type>();
ActionSamples = new Dictionary<HelpPageSampleKey, object>();
SampleObjects = new Dictionary<Type, object>();
SampleObjectFactories = new List<Func<HelpPageSampleGenerator, Type, object>>
{
DefaultSampleObjectFactory,
};
}
/// <summary>
/// Gets CLR types that are used as the content of <see cref="HttpRequestMessage"/> or <see cref="HttpResponseMessage"/>.
/// </summary>
public IDictionary<HelpPageSampleKey, Type> ActualHttpMessageTypes { get; internal set; }
/// <summary>
/// Gets the objects that are used directly as samples for certain actions.
/// </summary>
public IDictionary<HelpPageSampleKey, object> ActionSamples { get; internal set; }
/// <summary>
/// Gets the objects that are serialized as samples by the supported formatters.
/// </summary>
public IDictionary<Type, object> SampleObjects { get; internal set; }
/// <summary>
/// Gets factories for the objects that the supported formatters will serialize as samples. Processed in order,
/// stopping when the factory successfully returns a non-<see langref="null"/> object.
/// </summary>
/// <remarks>
/// Collection includes just <see cref="ObjectGenerator.GenerateObject(Type)"/> initially. Use
/// <code>SampleObjectFactories.Insert(0, func)</code> to provide an override and
/// <code>SampleObjectFactories.Add(func)</code> to provide a fallback.</remarks>
[SuppressMessage("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures",
Justification = "This is an appropriate nesting of generic types")]
public IList<Func<HelpPageSampleGenerator, Type, object>> SampleObjectFactories { get; private set; }
/// <summary>
/// Gets the request body samples for a given <see cref="ApiDescription"/>.
/// </summary>
/// <param name="api">The <see cref="ApiDescription"/>.</param>
/// <returns>The samples keyed by media type.</returns>
public IDictionary<MediaTypeHeaderValue, object> GetSampleRequests(ApiDescription api)
{
return GetSample(api, SampleDirection.Request);
}
/// <summary>
/// Gets the response body samples for a given <see cref="ApiDescription"/>.
/// </summary>
/// <param name="api">The <see cref="ApiDescription"/>.</param>
/// <returns>The samples keyed by media type.</returns>
public IDictionary<MediaTypeHeaderValue, object> GetSampleResponses(ApiDescription api)
{
return GetSample(api, SampleDirection.Response);
}
/// <summary>
/// Gets the request or response body samples.
/// </summary>
/// <param name="api">The <see cref="ApiDescription"/>.</param>
/// <param name="sampleDirection">The value indicating whether the sample is for a request or for a response.</param>
/// <returns>The samples keyed by media type.</returns>
public virtual IDictionary<MediaTypeHeaderValue, object> GetSample(ApiDescription api, SampleDirection sampleDirection)
{
if (api == null)
{
throw new ArgumentNullException("api");
}
string controllerName = api.ActionDescriptor.ControllerDescriptor.ControllerName;
string actionName = api.ActionDescriptor.ActionName;
IEnumerable<string> parameterNames = api.ParameterDescriptions.Select(p => p.Name);
Collection<MediaTypeFormatter> formatters;
Type type = ResolveType(api, controllerName, actionName, parameterNames, sampleDirection, out formatters);
var samples = new Dictionary<MediaTypeHeaderValue, object>();
// Use the samples provided directly for actions
var actionSamples = GetAllActionSamples(controllerName, actionName, parameterNames, sampleDirection);
foreach (var actionSample in actionSamples)
{
samples.Add(actionSample.Key.MediaType, WrapSampleIfString(actionSample.Value));
}
// Do the sample generation based on formatters only if an action doesn't return an HttpResponseMessage.
// Here we cannot rely on formatters because we don't know what's in the HttpResponseMessage, it might not even use formatters.
if (type != null && !typeof(HttpResponseMessage).IsAssignableFrom(type))
{
object sampleObject = GetSampleObject(type);
foreach (var formatter in formatters)
{
foreach (MediaTypeHeaderValue mediaType in formatter.SupportedMediaTypes)
{
if (!samples.ContainsKey(mediaType))
{
object sample = GetActionSample(controllerName, actionName, parameterNames, type, formatter, mediaType, sampleDirection);
// If no sample found, try generate sample using formatter and sample object
if (sample == null && sampleObject != null)
{
sample = WriteSampleObjectUsingFormatter(formatter, sampleObject, type, mediaType);
}
samples.Add(mediaType, WrapSampleIfString(sample));
}
}
}
}
return samples;
}
/// <summary>
/// Search for samples that are provided directly through <see cref="ActionSamples"/>.
/// </summary>
/// <param name="controllerName">Name of the controller.</param>
/// <param name="actionName">Name of the action.</param>
/// <param name="parameterNames">The parameter names.</param>
/// <param name="type">The CLR type.</param>
/// <param name="formatter">The formatter.</param>
/// <param name="mediaType">The media type.</param>
/// <param name="sampleDirection">The value indicating whether the sample is for a request or for a response.</param>
/// <returns>The sample that matches the parameters.</returns>
public virtual object GetActionSample(string controllerName, string actionName, IEnumerable<string> parameterNames, Type type, MediaTypeFormatter formatter, MediaTypeHeaderValue mediaType, SampleDirection sampleDirection)
{
object sample;
// First, try to get the sample provided for the specified mediaType, sampleDirection, controllerName, actionName and parameterNames.
// If not found, try to get the sample provided for the specified mediaType, sampleDirection, controllerName and actionName regardless of the parameterNames.
// If still not found, try to get the sample provided for the specified mediaType and type.
// Finally, try to get the sample provided for the specified mediaType.
if (ActionSamples.TryGetValue(new HelpPageSampleKey(mediaType, sampleDirection, controllerName, actionName, parameterNames), out sample) ||
ActionSamples.TryGetValue(new HelpPageSampleKey(mediaType, sampleDirection, controllerName, actionName, new[] { "*" }), out sample) ||
ActionSamples.TryGetValue(new HelpPageSampleKey(mediaType, type), out sample) ||
ActionSamples.TryGetValue(new HelpPageSampleKey(mediaType), out sample))
{
return sample;
}
return null;
}
/// <summary>
/// Gets the sample object that will be serialized by the formatters.
/// First, it will look at the <see cref="SampleObjects"/>. If no sample object is found, it will try to create
/// one using <see cref="DefaultSampleObjectFactory"/> (which wraps an <see cref="ObjectGenerator"/>) and other
/// factories in <see cref="SampleObjectFactories"/>.
/// </summary>
/// <param name="type">The type.</param>
/// <returns>The sample object.</returns>
[SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes",
Justification = "Even if all items in SampleObjectFactories throw, problem will be visible as missing sample.")]
public virtual object GetSampleObject(Type type)
{
object sampleObject;
if (!SampleObjects.TryGetValue(type, out sampleObject))
{
// No specific object available, try our factories.
foreach (Func<HelpPageSampleGenerator, Type, object> factory in SampleObjectFactories)
{
if (factory == null)
{
continue;
}
try
{
sampleObject = factory(this, type);
if (sampleObject != null)
{
break;
}
}
catch
{
// Ignore any problems encountered in the factory; go on to the next one (if any).
}
}
}
return sampleObject;
}
/// <summary>
/// Resolves the actual type of <see cref="System.Net.Http.ObjectContent{T}"/> passed to the <see cref="System.Net.Http.HttpRequestMessage"/> in an action.
/// </summary>
/// <param name="api">The <see cref="ApiDescription"/>.</param>
/// <returns>The type.</returns>
public virtual Type ResolveHttpRequestMessageType(ApiDescription api)
{
string controllerName = api.ActionDescriptor.ControllerDescriptor.ControllerName;
string actionName = api.ActionDescriptor.ActionName;
IEnumerable<string> parameterNames = api.ParameterDescriptions.Select(p => p.Name);
Collection<MediaTypeFormatter> formatters;
return ResolveType(api, controllerName, actionName, parameterNames, SampleDirection.Request, out formatters);
}
/// <summary>
/// Resolves the type of the action parameter or return value when <see cref="HttpRequestMessage"/> or <see cref="HttpResponseMessage"/> is used.
/// </summary>
/// <param name="api">The <see cref="ApiDescription"/>.</param>
/// <param name="controllerName">Name of the controller.</param>
/// <param name="actionName">Name of the action.</param>
/// <param name="parameterNames">The parameter names.</param>
/// <param name="sampleDirection">The value indicating whether the sample is for a request or a response.</param>
/// <param name="formatters">The formatters.</param>
[SuppressMessage("Microsoft.Design", "CA1021:AvoidOutParameters", Justification = "This is only used in advanced scenarios.")]
public virtual Type ResolveType(ApiDescription api, string controllerName, string actionName, IEnumerable<string> parameterNames, SampleDirection sampleDirection, out Collection<MediaTypeFormatter> formatters)
{
if (!Enum.IsDefined(typeof(SampleDirection), sampleDirection))
{
throw new InvalidEnumArgumentException("sampleDirection", (int)sampleDirection, typeof(SampleDirection));
}
if (api == null)
{
throw new ArgumentNullException("api");
}
Type type;
if (ActualHttpMessageTypes.TryGetValue(new HelpPageSampleKey(sampleDirection, controllerName, actionName, parameterNames), out type) ||
ActualHttpMessageTypes.TryGetValue(new HelpPageSampleKey(sampleDirection, controllerName, actionName, new[] { "*" }), out type))
{
// Re-compute the supported formatters based on type
Collection<MediaTypeFormatter> newFormatters = new Collection<MediaTypeFormatter>();
foreach (var formatter in api.ActionDescriptor.Configuration.Formatters)
{
if (IsFormatSupported(sampleDirection, formatter, type))
{
newFormatters.Add(formatter);
}
}
formatters = newFormatters;
}
else
{
switch (sampleDirection)
{
case SampleDirection.Request:
ApiParameterDescription requestBodyParameter = api.ParameterDescriptions.FirstOrDefault(p => p.Source == ApiParameterSource.FromBody);
type = requestBodyParameter == null ? null : requestBodyParameter.ParameterDescriptor.ParameterType;
formatters = api.SupportedRequestBodyFormatters;
break;
case SampleDirection.Response:
default:
type = api.ResponseDescription.ResponseType ?? api.ResponseDescription.DeclaredType;
formatters = api.SupportedResponseFormatters;
break;
}
}
return type;
}
/// <summary>
/// Writes the sample object using formatter.
/// </summary>
/// <param name="formatter">The formatter.</param>
/// <param name="value">The value.</param>
/// <param name="type">The type.</param>
/// <param name="mediaType">Type of the media.</param>
/// <returns></returns>
[SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes", Justification = "The exception is recorded as InvalidSample.")]
public virtual object WriteSampleObjectUsingFormatter(MediaTypeFormatter formatter, object value, Type type, MediaTypeHeaderValue mediaType)
{
if (formatter == null)
{
throw new ArgumentNullException("formatter");
}
if (mediaType == null)
{
throw new ArgumentNullException("mediaType");
}
object sample = String.Empty;
MemoryStream ms = null;
HttpContent content = null;
try
{
if (formatter.CanWriteType(type))
{
ms = new MemoryStream();
content = new ObjectContent(type, value, formatter, mediaType);
formatter.WriteToStreamAsync(type, value, ms, content, null).Wait();
ms.Position = 0;
StreamReader reader = new StreamReader(ms);
string serializedSampleString = reader.ReadToEnd();
if (mediaType.MediaType.ToUpperInvariant().Contains("XML"))
{
serializedSampleString = TryFormatXml(serializedSampleString);
}
else if (mediaType.MediaType.ToUpperInvariant().Contains("JSON"))
{
serializedSampleString = TryFormatJson(serializedSampleString);
}
sample = new TextSample(serializedSampleString);
}
else
{
sample = new InvalidSample(String.Format(
CultureInfo.CurrentCulture,
"Failed to generate the sample for media type '{0}'. Cannot use formatter '{1}' to write type '{2}'.",
mediaType,
formatter.GetType().Name,
type.Name));
}
}
catch (Exception e)
{
sample = new InvalidSample(String.Format(
CultureInfo.CurrentCulture,
"An exception has occurred while using the formatter '{0}' to generate sample for media type '{1}'. Exception message: {2}",
formatter.GetType().Name,
mediaType.MediaType,
UnwrapException(e).Message));
}
finally
{
if (ms != null)
{
ms.Dispose();
}
if (content != null)
{
content.Dispose();
}
}
return sample;
}
internal static Exception UnwrapException(Exception exception)
{
AggregateException aggregateException = exception as AggregateException;
if (aggregateException != null)
{
return aggregateException.Flatten().InnerException;
}
return exception;
}
// Default factory for sample objects
private static object DefaultSampleObjectFactory(HelpPageSampleGenerator sampleGenerator, Type type)
{
// Try to create a default sample object
ObjectGenerator objectGenerator = new ObjectGenerator();
return objectGenerator.GenerateObject(type);
}
[SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes", Justification = "Handling the failure by returning the original string.")]
private static string TryFormatJson(string str)
{
try
{
object parsedJson = JsonConvert.DeserializeObject(str);
return JsonConvert.SerializeObject(parsedJson, Formatting.Indented);
}
catch
{
// can't parse JSON, return the original string
return str;
}
}
[SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes", Justification = "Handling the failure by returning the original string.")]
private static string TryFormatXml(string str)
{
try
{
XDocument xml = XDocument.Parse(str);
return xml.ToString();
}
catch
{
// can't parse XML, return the original string
return str;
}
}
private static bool IsFormatSupported(SampleDirection sampleDirection, MediaTypeFormatter formatter, Type type)
{
switch (sampleDirection)
{
case SampleDirection.Request:
return formatter.CanReadType(type);
case SampleDirection.Response:
return formatter.CanWriteType(type);
}
return false;
}
private IEnumerable<KeyValuePair<HelpPageSampleKey, object>> GetAllActionSamples(string controllerName, string actionName, IEnumerable<string> parameterNames, SampleDirection sampleDirection)
{
HashSet<string> parameterNamesSet = new HashSet<string>(parameterNames, StringComparer.OrdinalIgnoreCase);
foreach (var sample in ActionSamples)
{
HelpPageSampleKey sampleKey = sample.Key;
if (String.Equals(controllerName, sampleKey.ControllerName, StringComparison.OrdinalIgnoreCase) &&
String.Equals(actionName, sampleKey.ActionName, StringComparison.OrdinalIgnoreCase) &&
(sampleKey.ParameterNames.SetEquals(new[] { "*" }) || parameterNamesSet.SetEquals(sampleKey.ParameterNames)) &&
sampleDirection == sampleKey.SampleDirection)
{
yield return sample;
}
}
}
private static object WrapSampleIfString(object sample)
{
string stringSample = sample as string;
if (stringSample != null)
{
return new TextSample(stringSample);
}
return sample;
}
}
}

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Net.Http.Headers;
namespace MQTTServerSideAPI.Areas.HelpPage
{
/// <summary>
/// This is used to identify the place where the sample should be applied.
/// </summary>
public class HelpPageSampleKey
{
/// <summary>
/// Creates a new <see cref="HelpPageSampleKey"/> based on media type.
/// </summary>
/// <param name="mediaType">The media type.</param>
public HelpPageSampleKey(MediaTypeHeaderValue mediaType)
{
if (mediaType == null)
{
throw new ArgumentNullException("mediaType");
}
ActionName = String.Empty;
ControllerName = String.Empty;
MediaType = mediaType;
ParameterNames = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
}
/// <summary>
/// Creates a new <see cref="HelpPageSampleKey"/> based on media type and CLR type.
/// </summary>
/// <param name="mediaType">The media type.</param>
/// <param name="type">The CLR type.</param>
public HelpPageSampleKey(MediaTypeHeaderValue mediaType, Type type)
: this(mediaType)
{
if (type == null)
{
throw new ArgumentNullException("type");
}
ParameterType = type;
}
/// <summary>
/// Creates a new <see cref="HelpPageSampleKey"/> based on <see cref="SampleDirection"/>, controller name, action name and parameter names.
/// </summary>
/// <param name="sampleDirection">The <see cref="SampleDirection"/>.</param>
/// <param name="controllerName">Name of the controller.</param>
/// <param name="actionName">Name of the action.</param>
/// <param name="parameterNames">The parameter names.</param>
public HelpPageSampleKey(SampleDirection sampleDirection, string controllerName, string actionName, IEnumerable<string> parameterNames)
{
if (!Enum.IsDefined(typeof(SampleDirection), sampleDirection))
{
throw new InvalidEnumArgumentException("sampleDirection", (int)sampleDirection, typeof(SampleDirection));
}
if (controllerName == null)
{
throw new ArgumentNullException("controllerName");
}
if (actionName == null)
{
throw new ArgumentNullException("actionName");
}
if (parameterNames == null)
{
throw new ArgumentNullException("parameterNames");
}
ControllerName = controllerName;
ActionName = actionName;
ParameterNames = new HashSet<string>(parameterNames, StringComparer.OrdinalIgnoreCase);
SampleDirection = sampleDirection;
}
/// <summary>
/// Creates a new <see cref="HelpPageSampleKey"/> based on media type, <see cref="SampleDirection"/>, controller name, action name and parameter names.
/// </summary>
/// <param name="mediaType">The media type.</param>
/// <param name="sampleDirection">The <see cref="SampleDirection"/>.</param>
/// <param name="controllerName">Name of the controller.</param>
/// <param name="actionName">Name of the action.</param>
/// <param name="parameterNames">The parameter names.</param>
public HelpPageSampleKey(MediaTypeHeaderValue mediaType, SampleDirection sampleDirection, string controllerName, string actionName, IEnumerable<string> parameterNames)
: this(sampleDirection, controllerName, actionName, parameterNames)
{
if (mediaType == null)
{
throw new ArgumentNullException("mediaType");
}
MediaType = mediaType;
}
/// <summary>
/// Gets the name of the controller.
/// </summary>
/// <value>
/// The name of the controller.
/// </value>
public string ControllerName { get; private set; }
/// <summary>
/// Gets the name of the action.
/// </summary>
/// <value>
/// The name of the action.
/// </value>
public string ActionName { get; private set; }
/// <summary>
/// Gets the media type.
/// </summary>
/// <value>
/// The media type.
/// </value>
public MediaTypeHeaderValue MediaType { get; private set; }
/// <summary>
/// Gets the parameter names.
/// </summary>
public HashSet<string> ParameterNames { get; private set; }
public Type ParameterType { get; private set; }
/// <summary>
/// Gets the <see cref="SampleDirection"/>.
/// </summary>
public SampleDirection? SampleDirection { get; private set; }
public override bool Equals(object obj)
{
HelpPageSampleKey otherKey = obj as HelpPageSampleKey;
if (otherKey == null)
{
return false;
}
return String.Equals(ControllerName, otherKey.ControllerName, StringComparison.OrdinalIgnoreCase) &&
String.Equals(ActionName, otherKey.ActionName, StringComparison.OrdinalIgnoreCase) &&
(MediaType == otherKey.MediaType || (MediaType != null && MediaType.Equals(otherKey.MediaType))) &&
ParameterType == otherKey.ParameterType &&
SampleDirection == otherKey.SampleDirection &&
ParameterNames.SetEquals(otherKey.ParameterNames);
}
public override int GetHashCode()
{
int hashCode = ControllerName.ToUpperInvariant().GetHashCode() ^ ActionName.ToUpperInvariant().GetHashCode();
if (MediaType != null)
{
hashCode ^= MediaType.GetHashCode();
}
if (SampleDirection != null)
{
hashCode ^= SampleDirection.GetHashCode();
}
if (ParameterType != null)
{
hashCode ^= ParameterType.GetHashCode();
}
foreach (string parameterName in ParameterNames)
{
hashCode ^= parameterName.ToUpperInvariant().GetHashCode();
}
return hashCode;
}
}
}

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using System;
namespace MQTTServerSideAPI.Areas.HelpPage
{
/// <summary>
/// This represents an image sample on the help page. There's a display template named ImageSample associated with this class.
/// </summary>
public class ImageSample
{
/// <summary>
/// Initializes a new instance of the <see cref="ImageSample"/> class.
/// </summary>
/// <param name="src">The URL of an image.</param>
public ImageSample(string src)
{
if (src == null)
{
throw new ArgumentNullException("src");
}
Src = src;
}
public string Src { get; private set; }
public override bool Equals(object obj)
{
ImageSample other = obj as ImageSample;
return other != null && Src == other.Src;
}
public override int GetHashCode()
{
return Src.GetHashCode();
}
public override string ToString()
{
return Src;
}
}
}

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using System;
namespace MQTTServerSideAPI.Areas.HelpPage
{
/// <summary>
/// This represents an invalid sample on the help page. There's a display template named InvalidSample associated with this class.
/// </summary>
public class InvalidSample
{
public InvalidSample(string errorMessage)
{
if (errorMessage == null)
{
throw new ArgumentNullException("errorMessage");
}
ErrorMessage = errorMessage;
}
public string ErrorMessage { get; private set; }
public override bool Equals(object obj)
{
InvalidSample other = obj as InvalidSample;
return other != null && ErrorMessage == other.ErrorMessage;
}
public override int GetHashCode()
{
return ErrorMessage.GetHashCode();
}
public override string ToString()
{
return ErrorMessage;
}
}
}

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using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.Linq;
using System.Reflection;
namespace MQTTServerSideAPI.Areas.HelpPage
{
/// <summary>
/// This class will create an object of a given type and populate it with sample data.
/// </summary>
public class ObjectGenerator
{
internal const int DefaultCollectionSize = 2;
private readonly SimpleTypeObjectGenerator SimpleObjectGenerator = new SimpleTypeObjectGenerator();
/// <summary>
/// Generates an object for a given type. The type needs to be public, have a public default constructor and settable public properties/fields. Currently it supports the following types:
/// Simple types: <see cref="int"/>, <see cref="string"/>, <see cref="Enum"/>, <see cref="DateTime"/>, <see cref="Uri"/>, etc.
/// Complex types: POCO types.
/// Nullables: <see cref="Nullable{T}"/>.
/// Arrays: arrays of simple types or complex types.
/// Key value pairs: <see cref="KeyValuePair{TKey,TValue}"/>
/// Tuples: <see cref="Tuple{T1}"/>, <see cref="Tuple{T1,T2}"/>, etc
/// Dictionaries: <see cref="IDictionary{TKey,TValue}"/> or anything deriving from <see cref="IDictionary{TKey,TValue}"/>.
/// Collections: <see cref="IList{T}"/>, <see cref="IEnumerable{T}"/>, <see cref="ICollection{T}"/>, <see cref="IList"/>, <see cref="IEnumerable"/>, <see cref="ICollection"/> or anything deriving from <see cref="ICollection{T}"/> or <see cref="IList"/>.
/// Queryables: <see cref="IQueryable"/>, <see cref="IQueryable{T}"/>.
/// </summary>
/// <param name="type">The type.</param>
/// <returns>An object of the given type.</returns>
public object GenerateObject(Type type)
{
return GenerateObject(type, new Dictionary<Type, object>());
}
[SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes", Justification = "Here we just want to return null if anything goes wrong.")]
private object GenerateObject(Type type, Dictionary<Type, object> createdObjectReferences)
{
try
{
if (SimpleTypeObjectGenerator.CanGenerateObject(type))
{
return SimpleObjectGenerator.GenerateObject(type);
}
if (type.IsArray)
{
return GenerateArray(type, DefaultCollectionSize, createdObjectReferences);
}
if (type.IsGenericType)
{
return GenerateGenericType(type, DefaultCollectionSize, createdObjectReferences);
}
if (type == typeof(IDictionary))
{
return GenerateDictionary(typeof(Hashtable), DefaultCollectionSize, createdObjectReferences);
}
if (typeof(IDictionary).IsAssignableFrom(type))
{
return GenerateDictionary(type, DefaultCollectionSize, createdObjectReferences);
}
if (type == typeof(IList) ||
type == typeof(IEnumerable) ||
type == typeof(ICollection))
{
return GenerateCollection(typeof(ArrayList), DefaultCollectionSize, createdObjectReferences);
}
if (typeof(IList).IsAssignableFrom(type))
{
return GenerateCollection(type, DefaultCollectionSize, createdObjectReferences);
}
if (type == typeof(IQueryable))
{
return GenerateQueryable(type, DefaultCollectionSize, createdObjectReferences);
}
if (type.IsEnum)
{
return GenerateEnum(type);
}
if (type.IsPublic || type.IsNestedPublic)
{
return GenerateComplexObject(type, createdObjectReferences);
}
}
catch
{
// Returns null if anything fails
return null;
}
return null;
}
private static object GenerateGenericType(Type type, int collectionSize, Dictionary<Type, object> createdObjectReferences)
{
Type genericTypeDefinition = type.GetGenericTypeDefinition();
if (genericTypeDefinition == typeof(Nullable<>))
{
return GenerateNullable(type, createdObjectReferences);
}
if (genericTypeDefinition == typeof(KeyValuePair<,>))
{
return GenerateKeyValuePair(type, createdObjectReferences);
}
if (IsTuple(genericTypeDefinition))
{
return GenerateTuple(type, createdObjectReferences);
}
Type[] genericArguments = type.GetGenericArguments();
if (genericArguments.Length == 1)
{
if (genericTypeDefinition == typeof(IList<>) ||
genericTypeDefinition == typeof(IEnumerable<>) ||
genericTypeDefinition == typeof(ICollection<>))
{
Type collectionType = typeof(List<>).MakeGenericType(genericArguments);
return GenerateCollection(collectionType, collectionSize, createdObjectReferences);
}
if (genericTypeDefinition == typeof(IQueryable<>))
{
return GenerateQueryable(type, collectionSize, createdObjectReferences);
}
Type closedCollectionType = typeof(ICollection<>).MakeGenericType(genericArguments[0]);
if (closedCollectionType.IsAssignableFrom(type))
{
return GenerateCollection(type, collectionSize, createdObjectReferences);
}
}
if (genericArguments.Length == 2)
{
if (genericTypeDefinition == typeof(IDictionary<,>))
{
Type dictionaryType = typeof(Dictionary<,>).MakeGenericType(genericArguments);
return GenerateDictionary(dictionaryType, collectionSize, createdObjectReferences);
}
Type closedDictionaryType = typeof(IDictionary<,>).MakeGenericType(genericArguments[0], genericArguments[1]);
if (closedDictionaryType.IsAssignableFrom(type))
{
return GenerateDictionary(type, collectionSize, createdObjectReferences);
}
}
if (type.IsPublic || type.IsNestedPublic)
{
return GenerateComplexObject(type, createdObjectReferences);
}
return null;
}
private static object GenerateTuple(Type type, Dictionary<Type, object> createdObjectReferences)
{
Type[] genericArgs = type.GetGenericArguments();
object[] parameterValues = new object[genericArgs.Length];
bool failedToCreateTuple = true;
ObjectGenerator objectGenerator = new ObjectGenerator();
for (int i = 0; i < genericArgs.Length; i++)
{
parameterValues[i] = objectGenerator.GenerateObject(genericArgs[i], createdObjectReferences);
failedToCreateTuple &= parameterValues[i] == null;
}
if (failedToCreateTuple)
{
return null;
}
object result = Activator.CreateInstance(type, parameterValues);
return result;
}
private static bool IsTuple(Type genericTypeDefinition)
{
return genericTypeDefinition == typeof(Tuple<>) ||
genericTypeDefinition == typeof(Tuple<,>) ||
genericTypeDefinition == typeof(Tuple<,,>) ||
genericTypeDefinition == typeof(Tuple<,,,>) ||
genericTypeDefinition == typeof(Tuple<,,,,>) ||
genericTypeDefinition == typeof(Tuple<,,,,,>) ||
genericTypeDefinition == typeof(Tuple<,,,,,,>) ||
genericTypeDefinition == typeof(Tuple<,,,,,,,>);
}
private static object GenerateKeyValuePair(Type keyValuePairType, Dictionary<Type, object> createdObjectReferences)
{
Type[] genericArgs = keyValuePairType.GetGenericArguments();
Type typeK = genericArgs[0];
Type typeV = genericArgs[1];
ObjectGenerator objectGenerator = new ObjectGenerator();
object keyObject = objectGenerator.GenerateObject(typeK, createdObjectReferences);
object valueObject = objectGenerator.GenerateObject(typeV, createdObjectReferences);
if (keyObject == null && valueObject == null)
{
// Failed to create key and values
return null;
}
object result = Activator.CreateInstance(keyValuePairType, keyObject, valueObject);
return result;
}
private static object GenerateArray(Type arrayType, int size, Dictionary<Type, object> createdObjectReferences)
{
Type type = arrayType.GetElementType();
Array result = Array.CreateInstance(type, size);
bool areAllElementsNull = true;
ObjectGenerator objectGenerator = new ObjectGenerator();
for (int i = 0; i < size; i++)
{
object element = objectGenerator.GenerateObject(type, createdObjectReferences);
result.SetValue(element, i);
areAllElementsNull &= element == null;
}
if (areAllElementsNull)
{
return null;
}
return result;
}
private static object GenerateDictionary(Type dictionaryType, int size, Dictionary<Type, object> createdObjectReferences)
{
Type typeK = typeof(object);
Type typeV = typeof(object);
if (dictionaryType.IsGenericType)
{
Type[] genericArgs = dictionaryType.GetGenericArguments();
typeK = genericArgs[0];
typeV = genericArgs[1];
}
object result = Activator.CreateInstance(dictionaryType);
MethodInfo addMethod = dictionaryType.GetMethod("Add") ?? dictionaryType.GetMethod("TryAdd");
MethodInfo containsMethod = dictionaryType.GetMethod("Contains") ?? dictionaryType.GetMethod("ContainsKey");
ObjectGenerator objectGenerator = new ObjectGenerator();
for (int i = 0; i < size; i++)
{
object newKey = objectGenerator.GenerateObject(typeK, createdObjectReferences);
if (newKey == null)
{
// Cannot generate a valid key
return null;
}
bool containsKey = (bool)containsMethod.Invoke(result, new object[] { newKey });
if (!containsKey)
{
object newValue = objectGenerator.GenerateObject(typeV, createdObjectReferences);
addMethod.Invoke(result, new object[] { newKey, newValue });
}
}
return result;
}
private static object GenerateEnum(Type enumType)
{
Array possibleValues = Enum.GetValues(enumType);
if (possibleValues.Length > 0)
{
return possibleValues.GetValue(0);
}
return null;
}
private static object GenerateQueryable(Type queryableType, int size, Dictionary<Type, object> createdObjectReferences)
{
bool isGeneric = queryableType.IsGenericType;
object list;
if (isGeneric)
{
Type listType = typeof(List<>).MakeGenericType(queryableType.GetGenericArguments());
list = GenerateCollection(listType, size, createdObjectReferences);
}
else
{
list = GenerateArray(typeof(object[]), size, createdObjectReferences);
}
if (list == null)
{
return null;
}
if (isGeneric)
{
Type argumentType = typeof(IEnumerable<>).MakeGenericType(queryableType.GetGenericArguments());
MethodInfo asQueryableMethod = typeof(Queryable).GetMethod("AsQueryable", new[] { argumentType });
return asQueryableMethod.Invoke(null, new[] { list });
}
return Queryable.AsQueryable((IEnumerable)list);
}
private static object GenerateCollection(Type collectionType, int size, Dictionary<Type, object> createdObjectReferences)
{
Type type = collectionType.IsGenericType ?
collectionType.GetGenericArguments()[0] :
typeof(object);
object result = Activator.CreateInstance(collectionType);
MethodInfo addMethod = collectionType.GetMethod("Add");
bool areAllElementsNull = true;
ObjectGenerator objectGenerator = new ObjectGenerator();
for (int i = 0; i < size; i++)
{
object element = objectGenerator.GenerateObject(type, createdObjectReferences);
addMethod.Invoke(result, new object[] { element });
areAllElementsNull &= element == null;
}
if (areAllElementsNull)
{
return null;
}
return result;
}
private static object GenerateNullable(Type nullableType, Dictionary<Type, object> createdObjectReferences)
{
Type type = nullableType.GetGenericArguments()[0];
ObjectGenerator objectGenerator = new ObjectGenerator();
return objectGenerator.GenerateObject(type, createdObjectReferences);
}
private static object GenerateComplexObject(Type type, Dictionary<Type, object> createdObjectReferences)
{
object result = null;
if (createdObjectReferences.TryGetValue(type, out result))
{
// The object has been created already, just return it. This will handle the circular reference case.
return result;
}
if (type.IsValueType)
{
result = Activator.CreateInstance(type);
}
else
{
ConstructorInfo defaultCtor = type.GetConstructor(Type.EmptyTypes);
if (defaultCtor == null)
{
// Cannot instantiate the type because it doesn't have a default constructor
return null;
}
result = defaultCtor.Invoke(new object[0]);
}
createdObjectReferences.Add(type, result);
SetPublicProperties(type, result, createdObjectReferences);
SetPublicFields(type, result, createdObjectReferences);
return result;
}
private static void SetPublicProperties(Type type, object obj, Dictionary<Type, object> createdObjectReferences)
{
PropertyInfo[] properties = type.GetProperties(BindingFlags.Public | BindingFlags.Instance);
ObjectGenerator objectGenerator = new ObjectGenerator();
foreach (PropertyInfo property in properties)
{
if (property.CanWrite)
{
object propertyValue = objectGenerator.GenerateObject(property.PropertyType, createdObjectReferences);
property.SetValue(obj, propertyValue, null);
}
}
}
private static void SetPublicFields(Type type, object obj, Dictionary<Type, object> createdObjectReferences)
{
FieldInfo[] fields = type.GetFields(BindingFlags.Public | BindingFlags.Instance);
ObjectGenerator objectGenerator = new ObjectGenerator();
foreach (FieldInfo field in fields)
{
object fieldValue = objectGenerator.GenerateObject(field.FieldType, createdObjectReferences);
field.SetValue(obj, fieldValue);
}
}
private class SimpleTypeObjectGenerator
{
private long _index = 0;
private static readonly Dictionary<Type, Func<long, object>> DefaultGenerators = InitializeGenerators();
[SuppressMessage("Microsoft.Maintainability", "CA1502:AvoidExcessiveComplexity", Justification = "These are simple type factories and cannot be split up.")]
private static Dictionary<Type, Func<long, object>> InitializeGenerators()
{
return new Dictionary<Type, Func<long, object>>
{
{ typeof(Boolean), index => true },
{ typeof(Byte), index => (Byte)64 },
{ typeof(Char), index => (Char)65 },
{ typeof(DateTime), index => DateTime.Now },
{ typeof(DateTimeOffset), index => new DateTimeOffset(DateTime.Now) },
{ typeof(DBNull), index => DBNull.Value },
{ typeof(Decimal), index => (Decimal)index },
{ typeof(Double), index => (Double)(index + 0.1) },
{ typeof(Guid), index => Guid.NewGuid() },
{ typeof(Int16), index => (Int16)(index % Int16.MaxValue) },
{ typeof(Int32), index => (Int32)(index % Int32.MaxValue) },
{ typeof(Int64), index => (Int64)index },
{ typeof(Object), index => new object() },
{ typeof(SByte), index => (SByte)64 },
{ typeof(Single), index => (Single)(index + 0.1) },
{
typeof(String), index =>
{
return String.Format(CultureInfo.CurrentCulture, "sample string {0}", index);
}
},
{
typeof(TimeSpan), index =>
{
return TimeSpan.FromTicks(1234567);
}
},
{ typeof(UInt16), index => (UInt16)(index % UInt16.MaxValue) },
{ typeof(UInt32), index => (UInt32)(index % UInt32.MaxValue) },
{ typeof(UInt64), index => (UInt64)index },
{
typeof(Uri), index =>
{
return new Uri(String.Format(CultureInfo.CurrentCulture, "http://webapihelppage{0}.com", index));
}
},
};
}
public static bool CanGenerateObject(Type type)
{
return DefaultGenerators.ContainsKey(type);
}
public object GenerateObject(Type type)
{
return DefaultGenerators[type](++_index);
}
}
}
}

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@@ -0,0 +1,11 @@
namespace MQTTServerSideAPI.Areas.HelpPage
{
/// <summary>
/// Indicates whether the sample is used for request or response
/// </summary>
public enum SampleDirection
{
Request = 0,
Response
}
}

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@@ -0,0 +1,37 @@
using System;
namespace MQTTServerSideAPI.Areas.HelpPage
{
/// <summary>
/// This represents a preformatted text sample on the help page. There's a display template named TextSample associated with this class.
/// </summary>
public class TextSample
{
public TextSample(string text)
{
if (text == null)
{
throw new ArgumentNullException("text");
}
Text = text;
}
public string Text { get; private set; }
public override bool Equals(object obj)
{
TextSample other = obj as TextSample;
return other != null && Text == other.Text;
}
public override int GetHashCode()
{
return Text.GetHashCode();
}
public override string ToString()
{
return Text;
}
}
}