Files
windmill/backend/windmill-worker/src/graphql_executor.rs
2023-11-22 18:17:37 +01:00

109 lines
2.8 KiB
Rust

use std::collections::HashMap;
use serde_json::{json, value::RawValue};
use sqlx::types::Json;
use windmill_common::error::Error;
use windmill_common::jobs::QueuedJob;
use windmill_parser_graphql::parse_graphql_sig;
use windmill_queue::HTTP_CLIENT;
use serde::Deserialize;
use crate::{common::build_args_map, AuthedClientBackgroundTask};
#[derive(Deserialize)]
struct GraphqlApi {
bearer_token: Option<String>,
base_url: String,
custom_headers: Option<HashMap<String, String>>,
}
#[derive(Deserialize)]
struct GraphqlResponse {
data: Option<Box<RawValue>>,
errors: Option<Vec<GraphqlError>>,
}
#[derive(Deserialize)]
struct GraphqlError {
message: String,
}
pub async fn do_graphql(
job: &QueuedJob,
client: &AuthedClientBackgroundTask,
query: &str,
db: &sqlx::Pool<sqlx::Postgres>,
) -> windmill_common::error::Result<Box<RawValue>> {
let args = build_args_map(job, client, db).await?.map(Json);
let job_args = if args.is_some() {
args.as_ref()
} else {
job.args.as_ref()
};
let api = if let Some(db) = job_args.as_ref().and_then(|x| x.get("api")) {
serde_json::from_str::<GraphqlApi>(db.get())
.map_err(|e| Error::ExecutionErr(e.to_string()))?
} else {
return Err(Error::BadRequest("Missing api argument".to_string()));
};
// variables is job_args except for api
let mut variables = HashMap::new();
let sig = parse_graphql_sig(&query)
.map_err(|x| Error::ExecutionErr(x.to_string()))?
.args;
if let Some(job_args) = job_args {
for arg in &sig {
variables.insert(
arg.name.clone(),
job_args
.get(&arg.name)
.map(|x| x.to_owned())
.unwrap_or_default(),
);
}
}
let mut request = HTTP_CLIENT.post(api.base_url).json(&json!({
"query": query,
"variables": variables
}));
if let Some(token) = &api.bearer_token {
request = request.bearer_auth(token.as_str());
}
if let Some(headers) = &api.custom_headers {
for (k, v) in headers {
request = request.header(k, v);
}
}
let response = request
.send()
.await
.map_err(|e| Error::ExecutionErr(e.to_string()))?;
let result = response
.json::<GraphqlResponse>()
.await
.map_err(|e| Error::ExecutionErr(e.to_string()))?;
if let Some(errors) = result.errors {
return Err(Error::ExecutionErr(
errors
.into_iter()
.map(|x| x.message)
.collect::<Vec<_>>()
.join("\n"),
));
}
// And then check that we got back the same string we sent over.
return Ok(result
.data
.unwrap_or_else(|| serde_json::from_str("{}").unwrap()));
}