static unsafe dynamic do_query_with_caching(string query, IDatabase redisDB, GraphQLClient graphQL)
{
// Try to get the query result from redis
string jsonString = redisDB.StringGet(query);
// Check if a result was returned (the query IS in the cache)
if (String.IsNullOrEmpty(jsonString)) // If the query IS NOT in the cache
{
// Issue graphQL query
var graphQLResponse = graphQL.PostQueryAsync(query).GetAwaiter().GetResult();
// Convert graphQL response to JSON string
jsonString = graphQLResponse.Data.ToString();
// Conditionally store result in Redis cache
if (jsonString.Length * sizeof(char) < 1024 * 1024 * 10)
{
// Add to cache
redisDB.StringSetAsync(query, jsonString);
}
// Return JObject
return(graphQLResponse.Data);
}
else // The query IS in the cache
{
// Parse JSON string into JObject and return
return(JsonConvert.DeserializeObject <dynamic>(jsonString));
}
}
/*
* This function will either execute an arbitrary (NON MUTATION) graphql query, or return the cached result. Cached results
* are stored until memory limits are exceeded, and then evicted using an LRU policy.
* @Param: query is the string representation of the graphql query you wish to execute
*/
static async System.Threading.Tasks.Task <dynamic> do_graphql_query_caching(string query)
{
// check if the query is in Redis cache
string key = query;
string jsonString = db.StringGet(key);
if (String.IsNullOrEmpty(jsonString))
{
// Not in redis cache, query graphql
var graphQLResponse = await graphQL.PostQueryAsync(query);
jsonString = graphQLResponse.Data.ToString();
// Conditionally add to redis cache
if (true)//returnVal.Length <= 10000)
{
db.StringSetAsync(query, jsonString);
}
// done
//do_logging_write(graphQLResponse.GetType().FullName);
return(graphQLResponse.Data);
}
else
{
// Is in redis cache, return result
return(JsonConvert.DeserializeObject <dynamic>(jsonString));
}
}
static async Task Main()
{
using var graphQLClient = new GraphQLClient(ServerUrl);
// Basic GraphQL query
var allMoviesResponse = await graphQLClient.PostQueryAsync(@"{ movies { title } }"); // TODO: Add 'year'
Console.WriteLine($"Title of first movie: {allMoviesResponse.Data.movies[0].title}");
var allMovies = allMoviesResponse.GetDataFieldAs <IEnumerable <Movie> >("movies");
Console.WriteLine("All movies:");
foreach (var movie in allMovies)
{
Console.WriteLine($"\t{movie.Title} ({movie.Year})");
}
// Parameterized GraphQL query
var firstActorsInMoviesResponse = await graphQLClient.PostAsync(new GraphQLRequest
{
Query = @"query ($firstMovies: Int, $firstCast: Int, $genre: Genre!) {
movies(first: $firstMovies, genre: $genre) {
title
year
cast(first: $firstCast) {
character
actor {
name
}
}
}
}",
Variables = new
{
firstMovies = 3, // optional
firstCast = 1, // optional
genre = "ACTION", // required
},
});
var firstActorsInMovies = firstActorsInMoviesResponse.GetDataFieldAs <IEnumerable <Movie> >("movies");
Console.WriteLine("First actors in movies:");
foreach (var movie in firstActorsInMovies)
{
Console.WriteLine($"\t{movie.Title} ({movie.Year})");
foreach (var castMember in movie.Cast)
{
Console.WriteLine($"\t\t{castMember.Character}, played by {castMember.Actor.Name}");
}
}
}
public async Task <List <ProductModel> > GetProducts()
{
var stringquery = @"{ products
{ id name price }
}";
var query = new GraphQLRequest
{
Query = stringquery
};
var response = await _client.PostAsync(query);
var response2 = await _client.PostQueryAsync(stringquery);
var test = response2.GetDataFieldAs <List <ProductModel> >("products");
return(response.GetDataFieldAs <List <ProductModel> >("products"));
}
public async Task <T> Query <T>(string endpointUrl, string q)
{
if (_graphQLClient == null)
{
_graphQLClient = new GraphQLClient(endpointUrl);
_graphQLClient.DefaultRequestHeaders.Add("User-Agent", "GraphQL");
_graphQLClient.DefaultRequestHeaders.Add("Authorization", "bearer 6e12ba408462d0e362cfab249e1cfd7603973dc0");
}
var response = await _graphQLClient.PostQueryAsync(q);
// dynamic
// var value = response.Data.name;
// Typed
var user = response.GetDataFieldAs <T>("user");
return(user);
}
public static async Task <T> PostQueryAsync <T>(string endpoint, string query, string section, CancellationToken?token = null)
{
var gqlClient = new GraphQLClient(endpoint, new GraphQLClientOptions {
MediaType = new MediaTypeHeaderValue("application/json")
});
try
{
var gqlResponse = await gqlClient.PostQueryAsync(query, token ?? CancellationToken.None);
if (gqlResponse.Errors?.Length > 0)
{
throw new GraphQLException(gqlResponse.Errors[0]);
}
var result = gqlResponse.GetDataFieldAs <T>(section);
return(result);
}
finally
{
gqlClient.Dispose();
}
}
public static async Task <List <HouseholdModel> > GetHouseholdsAsync()
{
var response = (await GraphQLClient.PostQueryAsync(Queries.HouseholdsQuery)).ThrowIfNotSuccessful();
return(response.GetDataFieldAs <List <HouseholdModel> >("households"));
}
public static async Task <List <NotificationModel> > GetNotificationsAsync()
{
var response = (await GraphQLClient.PostQueryAsync(Queries.NotificationsQuery)).ThrowIfNotSuccessful();
return(response.GetDataFieldAs <List <NotificationModel> >("notifications"));
}
