I struggle with assigning values to an 'HttpRequestMessage' class.
My code is:
let requestMsg = new HttpRequestMessage()
requestMsg.RequestUri = new System.Uri("https://yh-finance.p.rapidapi.com/stock/v2/get-summary?symbol=BMW.DE®ion=DE");;
When I assign the URL, I get the response:
val it : bool = false
I tried to assign a different Method but also got the same response.
> requestMsg.Method = HttpMethod.Post;;
val it : bool = false
requestMsg has this content:
> requestMsg;;
val it : HttpRequestMessage =
Method: GET, RequestUri: '<null>', Version: 1.1, Content: <null>, Headers:
{
}
{Content = null;
Headers = seq [];
Method = GET;
Options = seq [];
Properties = seq [];
RequestUri = null;
Version = 1.1;
VersionPolicy = RequestVersionOrLower;}
How can I modify the HttpRequestMessage object?
Assignment in F# is done with <-: https://learn.microsoft.com/en-us/dotnet/fsharp/language-reference/values/#mutable-variables
requestMsg.Method <- HttpMethod.Post
Related
How can I retrieve API keys for a function app in Azure using ListWebAppFunctionKeysArgs?
I have the following method:
public static Output<Dictionary<string, string>?> Get(string resourceGroupName, FunctionApp functionApp)
{
var output =
Output.Tuple(functionApp.Name, functionApp.Name)
.Apply(async tuple => {
var current = Pulumi.Azure.Core.GetClientConfig.InvokeAsync().Result;
var subscriptionId = current.SubscriptionId;
var appName = tuple.Item1;
var httpClient = new HttpClient();
httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", AuthToken.Value);
var url = $"https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Web/sites/{appName}/functions?api-version=2022-03-01";
var result = await httpClient.GetAsync(url);
if (!result.IsSuccessStatusCode) throw new Exception($"Error: Failed to retrive Azure function names from {appName}");
var json = await result.Content.ReadAsStringAsync();
var root = JsonConvert.DeserializeObject<JsonSupport.AzureFunctionItems.Root>(json);
var items = root.value.Select(async v => {
var data = await ListWebAppFunctionKeys.InvokeAsync(new ListWebAppFunctionKeysArgs {
Name = appName,
FunctionName = v.properties.name,
ResourceGroupName = resourceGroupName
});
return data.Properties;
});
var data = items.SelectMany(v => v.Result).ToList();
return new Dictionary<string, string>(data);
});
return output;
}
Here's the code that I'm struggling with:
var json = await result.Content.ReadAsStringAsync();
var root = JsonConvert.DeserializeObject<JsonSupport.AzureFunctionItems.Root>(json);
var items = root.value.Select(async v => {
var data = await ListWebAppFunctionKeys.InvokeAsync(new ListWebAppFunctionKeysArgs {
Name = appName,
FunctionName = v.properties.name,
ResourceGroupName = resourceGroupName
});
return data.Properties; // Property values are null
});
Here's the result:
In conclusion, how do I acquire API keys for a function app?
Azure Search V11
I can't get this to work. But with the standard FieldBuilder the index is created.
private static async Task CreateIndexAsync(SearchIndexClient indexClient, string indexName, Type type)
{
var builder = new FieldBuilder
{
Serializer = new JsonObjectSerializer(new JsonSerializerOptions {PropertyNamingPolicy = new CamelCaseNamingPolicy()})
};
var searchFields = builder.Build(type).ToArray();
var definition = new SearchIndex(indexName, searchFields);
await indexClient.CreateIndexAsync(definition);
}
`
public class CamelCaseNamingPolicy : JsonNamingPolicy
{
public override string ConvertName(string name)
{
return char.ToLower(name[0]) + name.Substring(1);
}
}
See our sample for FieldBuilder. Basically, you must use a naming policy for both FieldBuilder and the SearchClient:
var clientOptions = new SearchClientOptions
{
Serializer = new JsonObjectSerializer(
new JsonSerializerOptions
{
PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
}),
};
var builder = new FieldBuilder
{
Serializer = clientOptions.Serializer,
};
var index = new SearchIndex("name")
{
Fields = builder.Build(type),
};
var indexClient = new SearchIndexClient(uri, clientOptions);
await indexClient.CreateIndexAsync(index);
await Task.DelayAsync(5000); // can take a little while
var searchClient = new SearchClient(uri, clientOptions);
var response = await searchClient.SearchAsync("whatever");
While this sample works (our sample code comes from oft-executed tests), if you have further troubles, please be sure to post the exact exception message you are getting.
I have a Stream which contains List of objects. i.e. List<ProductSubCategoryListModel> and
ProductSubCategoryListModel contains isSelected boolean and CategoryId int.
I want to filter Stream which only has isSelected == true and get list type of List<ProductSubCategoryListModel> in return. After this need to get all the CategoryId from `List.
Here's my code.
Future<void> fetchProducts(
TrendingCategoriesModel categoryModel, int pageIndex) async {
_localCategoryModel = categoryModel;
//Stream I want to manipulate to get List<ProductSubCategoryListModel>
var stream = _categoryListController.stream;
var request = ProductListRequestModel();
var searchParameterModel = SearchParams();
searchParameterModel.SearchText = '';
searchParameterModel.CategoryIDs = //List<int> of CategoryIds filtered from List<ProductSubCategoryListModel>;
searchParameterModel.SubCategoryIDs = null;
searchParameterModel.AttributeIDs = null;
searchParameterModel.SubAttributeIDs = null;
searchParameterModel.StartPrice = 0;
searchParameterModel.EndPrice = null;
searchParameterModel.EndPrice = null;
request.PageIndex = pageIndex;
request.PageSize = 10;
request.SortExpression = '';
request.SortType = '';
request.IsGetFilterData = true;
request.searchParams = searchParameterModel;
if (!_productListController.isClosed) _productListController.sink.add(null);
var response =
await _networkHandler.callAPI(NetworkUrl.PRODUCT_LIST, request);
if (response != null) {
}
}
You can use map method https://api.flutter.dev/flutter/dart-async/Stream/map.html. it returns new stream with mapped data. Map will be applied to each event in a stream.
Additionally you can apply distinct method https://api.flutter.dev/flutter/dart-async/Stream/distinct.html just after map, if you need to ensure that only unique values will be emitted to the subscriber
I am using within my code some EF LINQ expressions to keep complex queries over my model in one place:
public static IQueryable<User> ToCheck(this IQueryable<User> queryable, int age, bool valueToCheck = true)
{
return queryable.Where(ToBeReviewed(age, valueToCheck));
}
public static Expression<Func<User, bool>> ToCheck(int age, bool valueToCheck = true)
{
return au => au.Status == UserStatus.Inactive
|| au.Status == UserStatus.Active &&
au.Age.HasValue && au.Age.Value > age;
}
I am then able to use them in queries:
var globalQuery = db.Users.ToCheck(value);
And also in selects:
var func = EntityExtensions.ToCheck(value);
var q = db.Department.Select(d => new
{
OrdersTotal = d.Orders.Sum(o => o.Price),
ToCheck = d.Users.AsQueryable().Count(func),
})
What I am trying to achieve is to actually use the same expression/function within a select, to evaluate it for each row.
var usersQuery = query.Select(au => new {
Id = au.Id,
Email = au.Email,
Status = au.Status.ToString(),
ToBeChecked = ???, // USE FUNCTION HERE
CreationTime = au.CreationTime,
LastLoginTime = au.LastLoginTime,
});
I am pretty that threre would be a way using plain EF capabilities or LINQKit, but can't find it.
Answering my own question :)
As pointed by #ivan-stoev, the use of Linqkit was the solution:
var globalQueryfilter = db.Users.AsExpandable.Where(au => au.Department == "hq");
var func = EntityExtensions.ToCheck(value);
var usersQuery = globalQueryfilter.Select(au => new
{
Id = au.Id,
Email = au.Email,
Status = au.Status.ToString(),
ToBeChecked = func.Invoke(au),
CreationTime = au.CreationTime,
LastLoginTime = au.LastLoginTime,
});
return appUsersQuery;
It's required to use the AsExpandable extension method from Linqkit along with Invoke with the function in the select method.
I want to add one more example:
Expression<Func<AddressObject, string, string>> selectExpr = (n, a) => n == null ? "[no address]" : n.OFFNAME + a;
var result = context.AddressObjects.AsExpandable().Select(addressObject => selectExpr.Invoke(addressObject, "1"));
Also, expression can be static in a helper.
p.s. please not forget to add "using LinqKit;" and use "AsExpandable".
When I do let! read = from.AsyncRead buf in F#, it blocks and doesn't return until the TCP socket is dead. Why? And how do I fix it?
Its code:
module StreamUtil
open System.IO
/// copy from 'from' stream to 'toStream'
let (|>>) (from : Stream) (toStream : Stream) =
let buf = Array.zeroCreate<byte> 1024
let rec doBlock () =
async {
let! read = from.AsyncRead buf
if read <= 0 then
toStream.Flush()
return ()
else
do! toStream.AsyncWrite(buf, 0, read)
return! doBlock () }
doBlock ()
It's being called from this code:
use fs = new FileStream(targPath, FileMode.CreateNew, FileAccess.ReadWrite)
do! req.InputStream |>> fs
and requested over HTTP with this code from Windows Phone 7.1 emulator:
public void Send()
{
var b = new UriBuilder(_imageService.BaseUrl) {Path = "/images"};
var req = WebRequest.CreateHttp(b.Uri);
req.ContentType = "image/jpeg";
req.Method = "POST";
var imgLen = SelectedImage.ImageStream.Length;
req.Headers[HttpRequestHeader.ContentLength] = imgLen.ToString(CultureInfo.InvariantCulture);
req.Accept = "application/json";
req.BeginGetRequestStream(RequestReady, new ReqState(req, imgLen));
}
void RequestReady(IAsyncResult ar)
{
var state = (ReqState)ar.AsyncState;
var req = state.Request;
var reqStream = req.EndGetRequestStream(ar);
SmartDispatcher.BeginInvoke(() =>
{
using (var sw = new StreamWriter(reqStream))
using (var br = new BinaryReader(SelectedVoucher.ImageStream))
{
var readBytes = br.ReadBytes(state.ImgLen);
// tried both 2
sw.Write(readBytes);
//sw.Write(Convert.ToBase64String(readBytes));
sw.Flush();
sw.Close();
}
req.BeginGetResponse(ResponseReady, req);
});
}
// WHY IS IT YOU ARE NOT CALLED???
void ResponseReady(IAsyncResult ar)
{
try
{
var request = (HttpWebRequest)ar.AsyncState;
var response = request.EndGetResponse(ar);
SmartDispatcher.BeginInvoke(() =>
{
var rdr = new StreamReader(response.GetResponseStream());
var msg = rdr.ReadToEnd();
var imageLocation = response.Headers["Location"];
Debug.WriteLine(msg);
Debug.WriteLine(imageLocation);
});
}
catch (WebException ex)
{
Debug.WriteLine(ex.ToString());
}
catch (Exception ex)
{
Debug.WriteLine(ex.ToString());
}
}
Unsuccessfully. The ResponseReady callback is never reached.
Meanwhile, this code works excellent:
open System
open System.Net.Http // WebAPI nuget
let sync aw = Async.RunSynchronously aw
let postC<'a> (c : HttpClient) (r : Uri) (cont : HttpContent) =
let response = sync <| Async.AwaitTask( c.PostAsync(r, cont) )
let struc:'a = sync <| deserialize<'a> response
response, struc
let withContent<'a> (fVerb : (HttpClient -> Uri -> HttpContent -> _ * 'a))=
let c = new HttpClient()
fVerb c
[<Test>]
let ``POST /images 201 + Location header`` () =
let post = withContent<MyImage> postC
let bytes = IO.File.ReadAllBytes("sample.jpg")
let hash = SHA1.Create().ComputeHash(bytes) |> Convert.ToBase64String
let pic = new ByteArrayContent(bytes)
pic.Headers.Add("Content-Type", "image/jpeg")
pic.Headers.Add("X-SHA1-Hash", hash)
let resp, ri = (resource "/images", pic) ||> post
resp.StatusCode =? Code.Created
ri.sha1 =? hash
mustHaveHeaders resp
I couldn't get Fiddler2 working with WP7.
EDIT: Welcome to a yak. I've moved onto greener pastures myself ;)
YOu should put the bytes into the before sending and using BufferStream INput output