stephenseo/EN605.607.81.SP22_ASDM_Project
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Have backend always return JSON String

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This commit is contained in:
Stephen Seo 2022-03-16 13:09:07 +09:00
parent 97ca4adecc
commit b9921e6f47
3 changed files with 65 additions and 5 deletions
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49
back_end/Cargo.lock generated
View file

@ -133,11 +133,28 @@ dependencies = [
name = "four_line_dropper_backend"
version = "0.1.0"
dependencies = [
"bytes",
"futures",
"serde_json",
"tokio",
"warp",
]
[[package]]
name = "futures"
version = "0.3.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f73fe65f54d1e12b726f517d3e2135ca3125a437b6d998caf1962961f7172d9e"
dependencies = [
"futures-channel",
"futures-core",
"futures-executor",
"futures-io",
"futures-sink",
"futures-task",
"futures-util",
]
[[package]]
name = "futures-channel"
version = "0.3.21"
@ -154,6 +171,34 @@ version = "0.3.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0c09fd04b7e4073ac7156a9539b57a484a8ea920f79c7c675d05d289ab6110d3"
[[package]]
name = "futures-executor"
version = "0.3.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9420b90cfa29e327d0429f19be13e7ddb68fa1cccb09d65e5706b8c7a749b8a6"
dependencies = [
"futures-core",
"futures-task",
"futures-util",
]
[[package]]
name = "futures-io"
version = "0.3.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fc4045962a5a5e935ee2fdedaa4e08284547402885ab326734432bed5d12966b"
[[package]]
name = "futures-macro"
version = "0.3.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "33c1e13800337f4d4d7a316bf45a567dbcb6ffe087f16424852d97e97a91f512"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "futures-sink"
version = "0.3.21"
@ -172,9 +217,13 @@ version = "0.3.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d8b7abd5d659d9b90c8cba917f6ec750a74e2dc23902ef9cd4cc8c8b22e6036a"
dependencies = [
"futures-channel",
"futures-core",
"futures-io",
"futures-macro",
"futures-sink",
"futures-task",
"memchr",
"pin-project-lite",
"pin-utils",
"slab",

2
back_end/Cargo.toml
View file

@ -9,3 +9,5 @@ edition = "2021"
tokio = { version = "1", features = ["full"] }
warp = "0.3"
serde_json = "1.0"
bytes = "1.1"
futures = "0.3.21"

19
back_end/src/main.rs
View file

@ -1,15 +1,24 @@
mod json_handlers;
use serde_json::Value;
use warp::Filter;
use warp::Rejection;
#[tokio::main]
async fn main() {
let route = warp::body::content_length_limit(1024 * 32)
.and(warp::body::json())
.map(|json_value: Value| {
let result = json_handlers::handle_json(json_value);
result.unwrap_or_else(|e| e)
.and(warp::body::bytes())
.and_then(|bytes: bytes::Bytes| async move {
let body_str_result = std::str::from_utf8(bytes.as_ref());
if let Ok(body_str) = body_str_result {
let json_result = serde_json::from_str(body_str);
if let Ok(json_value) = json_result {
Ok(json_handlers::handle_json(json_value).unwrap_or_else(|e| e))
} else {
Ok(String::from("{\"type\": \"invalid_syntax\"}"))
}
} else {
Ok::<String, Rejection>(String::from("{\"type\": \"invalid_syntax\"}"))
}
});
warp::serve(route).run(([0, 0, 0, 0], 1237)).await;