I am fairly new to rust and trying to connect to gmail api to read emails. I am using yup_oauth2 to authenticate and then google_gmail1 to read emails. here is my code
use yup_oauth2::{InstalledFlowAuthenticator, InstalledFlowReturnMethod};
use tokio::io::{stdout, AsyncWriteExt as _};
extern crate google_gmail1 as gmail1;
use gmail1::api::Message;
use gmail1::{Result, Error};
use std::fs;
use gmail1::{Gmail, oauth2, hyper , hyper_rustls , chrono, FieldMask};
#[tokio::main]
async fn main() {
// Read application secret from a file. Sometimes it's easier to compile it directly into
// the binary. The clientsecret file contains JSON like `{"installed":{"client_id": ... }}`
let secret = yup_oauth2::read_application_secret("D:\\email-summarizer\\src\\client_secret.json")
.await
.expect("D:\\email-summarizer\\src\\client_secret.json");
// Create an authenticator that uses an InstalledFlow to authenticate. The
// authentication tokens are persisted to a file named tokencache.json. The
// authenticator takes care of caching tokens to disk and refreshing tokens once
// they've expired.
let auth = InstalledFlowAuthenticator::builder(secret, InstalledFlowReturnMethod::HTTPRedirect)
.persist_tokens_to_disk("tokencache.json")
.build()
.await
.unwrap();
let scopes = &["https://www.googleapis.com/auth/drive.file"];
let mut hub = Gmail::new(
hyper::Client::builder().build(
hyper_rustls::HttpsConnectorBuilder::new().with_native_roots().https_or_http().enable_http1().enable_http2().build()),
auth);
let mut req = Message::default();
let result = hub.users().messages_import(req, "userId")
.process_for_calendar(true)
.never_mark_spam(true)
.internal_date_source("Lorem")
.deleted(false)
.upload_resumable(fs::File::open("D:\\email-summarizer\\src\\file.ext").unwrap(), "application/octet-stream".parse().unwrap()).await;
match result {
Err(e) => match e {
// The Error enum provides details about what exactly happened.
// You can also just use its `Debug`, `Display` or `Error` traits
Error::HttpError(_)
|Error::Io(_)
|Error::MissingAPIKey
|Error::MissingToken(_)
|Error::Cancelled
|Error::UploadSizeLimitExceeded(_, _)
|Error::Failure(_)
|Error::BadRequest(_)
|Error::FieldClash(_)
|Error::JsonDecodeError(_, _) => println!("{}", e),
},
Ok(res) => println!("Success: {:?}", res),
}
}
but when i am running it is giving the following error.
thread 'main' panicked at 'attempt to subtract with overflow', C:\Users\DC\.cargo\registry\src\github.com-1ecc6299db9ec823\google-apis-common-5.0.2\src\lib.rs:691:27
here is the backtrace
0: std::panicking::begin_panic_handler
at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\panicking.rs:575
1: core::panicking::panic_fmt
at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\core\src\panicking.rs:64
2: core::panicking::panic
at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\core\src\panicking.rs:111
3: google_apis_common::impl$14::upload::async_fn$0<alloc::boxed::Box<dyn$<google_apis_common::auth::GetToken>,alloc::alloc::Global>,hyper_rustls::connector::HttpsConnector<hyper::client::connect::http::HttpConnector<hyper::client::connect::dns::GaiResolver>
at C:\Users\DC\.cargo\registry\src\github.com-1ecc6299db9ec823\google-apis-common-5.0.2\src\lib.rs:691
4: google_gmail1::api::impl$110::doit::async_fn$0<hyper_rustls::connector::HttpsConnector<hyper::client::connect::http::HttpConnector<hyper::client::connect::dns::GaiResolver> >,std::fs::File>
at C:\Users\DC\.cargo\registry\src\github.com-1ecc6299db9ec823\google-gmail1-5.0.2+20230116\src\api.rs:9036
5: google_gmail1::api::impl$110::upload_resumable::async_fn$0<hyper_rustls::connector::HttpsConnector<hyper::client::connect::http::HttpConnector<hyper::client::connect::dns::GaiResolver> >,std::fs::File>
at C:\Users\DC\.cargo\registry\src\github.com-1ecc6299db9ec823\google-gmail1-5.0.2+20230116\src\api.rs:9090
6: email_summarizer::main::async_block$0
at .\src\main.rs:41
7: tokio::runtime::park::impl$4::block_on::closure$0<enum2$<email_summarizer::main::async_block_env$0> >
at C:\Users\DC\.cargo\registry\src\github.com-1ecc6299db9ec823\tokio-1.27.0\src\runtime\park.rs:283
8: tokio::runtime::coop::with_budget
at C:\Users\DC\.cargo\registry\src\github.com-1ecc6299db9ec823\tokio-1.27.0\src\runtime\coop.rs:107
9: tokio::runtime::coop::budget
at C:\Users\DC\.cargo\registry\src\github.com-1ecc6299db9ec823\tokio-1.27.0\src\runtime\coop.rs:73
10: tokio::runtime::park::CachedParkThread::block_on<enum2$<email_summarizer::main::async_block_env$0> >
at C:\Users\DC\.cargo\registry\src\github.com-1ecc6299db9ec823\tokio-1.27.0\src\runtime\park.rs:283
11: tokio::runtime::context::BlockingRegionGuard::block_on<enum2$<email_summarizer::main::async_block_env$0> >
at C:\Users\DC\.cargo\registry\src\github.com-1ecc6299db9ec823\tokio-1.27.0\src\runtime\context.rs:315
12: tokio::runtime::scheduler::multi_thread::MultiThread::block_on<enum2$<email_summarizer::main::async_block_env$0> >
at C:\Users\DC\.cargo\registry\src\github.com-1ecc6299db9ec823\tokio-1.27.0\src\runtime\scheduler\multi_thread\mod.rs:66
13: tokio::runtime::runtime::Runtime::block_on<enum2$<email_summarizer::main::async_block_env$0> >
at C:\Users\DC\.cargo\registry\src\github.com-1ecc6299db9ec823\tokio-1.27.0\src\runtime\runtime.rs:304
14: email_summarizer::main
at .\src\main.rs:43
15: core::ops::function::FnOnce::call_once<void (*)(),tuple$<> >
at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405\library\core\src\ops\function.rs:507
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose back
trace.
I know that the error is causing because in the following section -1 is getting subtracted from 0.but i dont know what causing it. I have tried changing this section in google-apis-common-5.0.2\src\lib.rs:691:27
let mut section_reader = self.reader.take(request_size);
let mut req_bytes = vec![];
section_reader.read_to_end(&mut req_bytes).unwrap();
let range_header = ContentRange {
range: Some(Chunk {
first: start,
last: start + request_size - 1,
}),
total_length: self.content_length,
};
if self.delegate.cancel_chunk_upload(&range_header) {
return None;
to
let mut section_reader = self.reader.take(request_size);
let mut req_bytes = vec![];
section_reader.read_to_end(&mut req_bytes).unwrap();
let range_header = ContentRange {
range: Some(Chunk {
first: start,
last: start + request_size - idx.wrapping_sub(1),
}),
total_length: self.content_length,
};
if self.delegate.cancel_chunk_upload(&range_header) {
return None;
