Merge pull request #105 from ktrance/master

Http request support

environments/dotnet/ExecutorModule.cs

@@ -64,10 +64,10 @@ namespace Fission.DotNetCore
                 response.StatusCode = HttpStatusCode.InternalServerError;
                 return response;
             }
-            var args = ((DynamicDictionary)Request.Query).ToDictionary();
+            
             try
             {
-                return _userFunc.Invoke(new FissionContext(args, new Logger()));
+                return _userFunc.Invoke(FissionContext.Build(Request, new Logger()));
             }
             catch (Exception e)
             {

environments/dotnet/FissionCompiler.cs

@@ -26,7 +26,8 @@ namespace Fission.DotNetCore.Compiler
             {
                 MetadataReference.CreateFromFile(coreDir.FullName + Path.DirectorySeparatorChar + "mscorlib.dll"),
                 MetadataReference.CreateFromFile(typeof(object).GetTypeInfo().Assembly.Location),
-                MetadataReference.CreateFromFile(Assembly.GetEntryAssembly().Location)
+                MetadataReference.CreateFromFile(Assembly.GetEntryAssembly().Location),
+                MetadataReference.CreateFromFile(typeof(System.Runtime.Serialization.Json.DataContractJsonSerializer).GetTypeInfo().Assembly.Location)
             };
 
             foreach (var referencedAssembly in Assembly.GetEntryAssembly().GetReferencedAssemblies())

environments/dotnet/FissionContext.cs

@@ -1,46 +1,67 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
+using System.Security.Cryptography.X509Certificates;
+using System.Text;
+using Nancy;
 
 namespace Fission.DotNetCore.Api
 {
     public class FissionContext
     {
-        public FissionContext(Dictionary<string, object> args, Logger logger)
+        public FissionContext(Dictionary<string, object> args, Logger logger, FissionHttpRequest request)
         {
             if (args == null) throw new ArgumentNullException(nameof(args));
             if (logger == null) throw new ArgumentNullException(nameof(logger));
+            if (request == null) throw new ArgumentNullException(nameof(request));
             Arguments = args;
             Logger = logger;
+            Request = request;
         }
 
         public Dictionary<string, object> Arguments { get; private set; }
+
+        public FissionHttpRequest Request { get; private set; }
+
         public Logger Logger { get; private set; }
+
+        public static FissionContext Build(Request request, Logger logger)
+        {
+            return new FissionContext(((DynamicDictionary)request.Query).ToDictionary(),
+                                        logger,
+                                        new FissionHttpRequest(request));
+        }
     }
 
     public class Logger
     {
         public void Write(Severity severity, string format, params object[] args)
         {
-            Console.WriteLine($"{DateTime.Now.ToString("MM/dd/yy H:mm:ss zzz")} {severity}: " + format, args);    
+            Console.WriteLine($"{DateTime.Now.ToString("MM/dd/yy H:mm:ss zzz")} {severity}: " + format, args);
         }
 
-        public void WriteInfo(string format, params object[] args){
+        public void WriteInfo(string format, params object[] args)
+        {
             Write(Severity.Info, format, args);
         }
 
-        public void WriteWarning(string format, params object[] args){
+        public void WriteWarning(string format, params object[] args)
+        {
             Write(Severity.Warning, format, args);
         }
 
-        public void WriteError(string format, params object[] args){
+        public void WriteError(string format, params object[] args)
+        {
             Write(Severity.Error, format, args);
         }
 
-        public void WriteCritical(string format, params object[] args){
+        public void WriteCritical(string format, params object[] args)
+        {
             Write(Severity.Critical, format, args);
         }
 
-        public void WriteVerbose(string format, params object[] args){
+        public void WriteVerbose(string format, params object[] args)
+        {
             Write(Severity.Verbose, format, args);
         }
     }
@@ -53,4 +74,41 @@ namespace Fission.DotNetCore.Api
         Critical,
         Verbose
     }
+
+    public class FissionHttpRequest
+    {
+        private readonly Request _request;
+        internal FissionHttpRequest(Request request)
+        {
+            if (request == null) throw new ArgumentNullException(nameof(request));
+            _request = request;
+        }
+
+        public Stream Body { get { return _request.Body; } }
+
+        public string BodyAsString()
+        {
+            int length = (int)_request.Body.Length;
+            byte[] data = new byte[length];
+            _request.Body.Read(data, 0, length);
+            return Encoding.UTF8.GetString(data);
+        }
+        
+        public Dictionary<string, IEnumerable<string>> Headers
+        {
+            get
+            {
+                var headers = new Dictionary<string, IEnumerable<string>>();
+                foreach (var kv in _request.Headers)
+                {
+                    headers.Add(kv.Key, kv.Value);
+                }
+                return headers;
+            }
+        }
+
+        public X509Certificate Certificate { get { return _request.ClientCertificate; } }
+        public string Url { get { return _request.Url.ToString(); } }
+        public string Method { get { return _request.Method; } }
+    }
 }

environments/dotnet/README.md

@@ -163,6 +163,114 @@ $ curl "http://$FISSION_ROUTER/add?x=30&y=12"
   42
 ```
 
+## Accessing http request information example
+
+### Setup fission environment
+First you need to setup the fission according to your cluster setup as 
+specified here: https://github.com/fission/fission
+
+
+### Create the class to run
+
+Secondly you need to create a file /tmp/func.cs containing the following code:
+
+```
+using System;
+using Fission.DotNetCore.Api;
+
+public class FissionFunction
+{
+    public string Execute(FissionContext context){
+        var buffer = new System.Text.StringBuilder();
+        foreach(var header in context.Request.Headers){
+                buffer.AppendLine(header.Key);
+                foreach(var item in header.Value){
+                        buffer.AppendLine($"\t{item}");
+                }
+        }
+        buffer.AppendLine($"Url: {context.Request.Url}, method: {context.Request.Method}");
+        return buffer.ToString();
+    }
+}
+
+``` 
+### Run the example
+
+Lastly to run the example:
+
+```
+$ fission env create --name dotnet --image fission/dotnet-env
+
+$ fission function create --name httpinfo --env dotnet --code /tmp/func.cs
+
+$ fission route create --method GET --url /http_info --function httpinfo
+
+$ curl "http://$FISSION_ROUTER/http_info"
+Accept
+	*/*;q=1
+Host
+	fissionserver:8888
+User-Agent
+	curl/7.47.0
+Url: http://fissionserver:8888, method: GET
+
+```
+
+## Accessing http request body example
+
+### Setup fission environment
+First you need to setup the fission according to your cluster setup as 
+specified here: https://github.com/fission/fission
+
+
+### Create the class to run
+
+Secondly you need to create a file /tmp/func.cs containing the following code:
+
+```
+using System.IO;
+using System.Runtime.Serialization.Json;
+using Fission.DotNetCore.Api;
+
+public class FissionFunction
+{
+    public string Execute(FissionContext context)
+    {
+        var person = Person.Deserialize(context.Request.Body);
+        return $"Hello, my name is {person.Name} and I am {person.Age} years old.";
+    }
+}
+
+public class Person
+{
+    public string Name { get; set; }
+    public int Age { get; set; }
+
+    public static Person Deserialize(Stream json)
+    {
+        var serializer = new DataContractJsonSerializer(typeof(Person));
+        return (Person)serializer.ReadObject(json);
+    }
+}
+
+``` 
+### Run the example
+
+Lastly to run the example:
+
+```
+$ fission env create --name dotnet --image fission/dotnet-env
+
+$ fission function create --name httpbody --env dotnet --code /tmp/func.cs
+
+$ fission route create --method GET --url /http_body --function httpbody
+
+$ curl -XPOST "http://$FISSION_ROUTER/http_body" -d '{ "Name":"Arthur", "Age":42}'
+Hello, my name is Arthur and I am 42 years old.
+
+```
+
+
 ## Developing/debugging the enviroment locally
 
 The easiest way to debug the environment is to open the directory in

environments/dotnet/project.json

@@ -1,24 +1,24 @@
 {
-  "version": "1.0.0-*",
-  "buildOptions": {
-    "emitEntryPoint": true,
-    "outputName": "fission-dotnet"
-  },
-
-    "dependencies": {
-        "Microsoft.NETCore.App": {
-            "version": "1.1.0",
-            "type": "platform"
-        },
-        "Microsoft.AspNetCore.Server.Kestrel": "1.0.0",
-        "Microsoft.AspNetCore.Owin": "1.0.0",
-        "Nancy": "2.0.0-barneyrubble",
-        "Microsoft.CodeAnalysis.CSharp": "1.3.0-*",
-        "System.Runtime.Loader": "4.0.0-*",
+    "version": "1.0.0-*",
+    "buildOptions": {
+        "emitEntryPoint": true,
+        "outputName": "fission-dotnet"
     },
-  "frameworks": {
-    "netcoreapp1.0": {
-      "imports": "dnxcore50"
+    "frameworks": {
+        "netcoreapp1.0": {
+            "dependencies": {
+                "Microsoft.NETCore.App": {
+                    "version": "1.1.0",
+                    "type": "platform"
+                },
+                "Microsoft.AspNetCore.Server.Kestrel": "1.0.0",
+                "Microsoft.AspNetCore.Owin": "1.0.0",
+                "Nancy": "2.0.0-barneyrubble",
+                "Microsoft.CodeAnalysis.CSharp": "1.3.0-*",
+                "System.Runtime.Loader": "4.0.0-*",
+                "System.Runtime.Serialization.Json": "4.0.2"
+            },
+            "imports": "netstandard1.3"
+        }
     }
-  }
 }

examples/dotnet/arguments.cs

@@ -0,0 +1,11 @@
+using System;
+using Fission.DotNetCore.Api;
+
+public class FissionFunction 
+{
+    public string Execute(FissionContext context){
+        var x = Convert.ToInt32(context.Arguments["x"]);
+        var y = Convert.ToInt32(context.Arguments["y"]);
+        return (x+y).ToString();
+    }
+

examples/dotnet/helloworld.cs

@@ -0,0 +1,9 @@
+using Fission.DotNetCore.Api;
+
+public class FissionFunction
+{
+    public string Execute(FissionContext context)
+    {
+        return "Hello World!";
+    }
+}

examples/dotnet/requestbody.cs

@@ -0,0 +1,24 @@
+using System.IO;
+using System.Runtime.Serialization.Json;
+using Fission.DotNetCore.Api;
+
+public class FissionFunction
+{
+    public string Execute(FissionContext context)
+    {
+        var person = Person.Deserialize(context.Request.Body);
+        return $"Hello, my name is {person.Name} and I am {person.Age} years old.";
+    }
+}
+
+public class Person
+{
+    public string Name { get; set; }
+    public int Age { get; set; }
+
+    public static Person Deserialize(Stream json)
+    {
+        var serializer = new DataContractJsonSerializer(typeof(Person));
+        return (Person)serializer.ReadObject(json);
+    }
+}

examples/dotnet/requestheaders.cs

@@ -0,0 +1,17 @@
+using System;
+using Fission.DotNetCore.Api;
+
+public class FissionFunction
+{
+    public string Execute(FissionContext context){
+        var buffer = new System.Text.StringBuilder();
+        foreach(var header in context.Request.Headers){
+                buffer.AppendLine(header.Key);
+                foreach(var item in header.Value){
+                        buffer.AppendLine($"\t{item}");
+                }
+        }
+        buffer.AppendLine($"Url: {context.Request.Url}, method: {context.Request.Method}");
+        return buffer.ToString();
+    }
+}