// @@ begin lint list maintained by maint/add_warning @@

#![allow(renamed_and_removed_lints)] // @@REMOVE_WHEN(ci_arti_stable)

#![allow(unknown_lints)] // @@REMOVE_WHEN(ci_arti_nightly)

#![warn(missing_docs)]

#![warn(noop_method_call)]

#![warn(unreachable_pub)]

#![warn(clippy::all)]

#![deny(clippy::await_holding_lock)]

#![deny(clippy::cargo_common_metadata)]

#![deny(clippy::cast_lossless)]

#![deny(clippy::checked_conversions)]

#![allow(clippy::cognitive_complexity)] // See arti#2556

#![deny(clippy::debug_assert_with_mut_call)]

#![deny(clippy::exhaustive_enums)]

#![deny(clippy::exhaustive_structs)]

#![deny(clippy::expl_impl_clone_on_copy)]

#![deny(clippy::fallible_impl_from)]

#![deny(clippy::implicit_clone)]

#![deny(clippy::large_stack_arrays)]

#![warn(clippy::manual_ok_or)]

#![deny(clippy::missing_docs_in_private_items)]

#![warn(clippy::needless_borrow)]

#![warn(clippy::needless_pass_by_value)]

#![warn(clippy::option_option)]

#![deny(clippy::print_stderr)]

#![deny(clippy::print_stdout)]

#![warn(clippy::rc_buffer)]

#![deny(clippy::ref_option_ref)]

#![warn(clippy::semicolon_if_nothing_returned)]

#![warn(clippy::trait_duplication_in_bounds)]

#![deny(clippy::unchecked_time_subtraction)]

#![deny(clippy::unnecessary_wraps)]

#![warn(clippy::unseparated_literal_suffix)]

#![deny(clippy::unwrap_used)]

#![deny(clippy::mod_module_files)]

#![allow(clippy::let_unit_value)] // This can reasonably be done for explicitness

#![allow(clippy::uninlined_format_args)]

#![allow(clippy::significant_drop_in_scrutinee)] // arti/-/merge_requests/588/#note_2812945

#![allow(clippy::result_large_err)] // temporary workaround for arti#587

#![allow(clippy::needless_raw_string_hashes)] // complained-about code is fine, often best

#![allow(clippy::needless_lifetimes)] // See arti#1765

#![allow(mismatched_lifetime_syntaxes)] // temporary workaround for arti#2060

#![allow(clippy::collapsible_if)] // See arti#2342

#![deny(clippy::unused_async)]

#![deny(clippy::string_slice)] // See arti#2571

//! <!-- @@ end lint list maintained by maint/add_warning @@ -->

//! Tracing exporter to write spans to a file in the OTLP JSON format.

// TODO: If https://github.com/open-telemetry/opentelemetry-rust/issues/2602 gets fixed, we can

// replace this entire file with whatever upstream has for doing this.

use opentelemetry_proto::transform::common::tonic::ResourceAttributesWithSchema;

use opentelemetry_proto::transform::trace::tonic::group_spans_by_resource_and_scope;

use opentelemetry_sdk::{

    Resource,

    error::{OTelSdkError, OTelSdkResult},

    trace::SpanExporter,

};

use std::{

    fmt::Debug,

    io::{LineWriter, Write},

    sync::{Arc, Mutex},

};

/// Tracing exporter to write OTLP JSON to a file (or anything else that implements [`LineWriter`].

#[derive(Debug)]

pub struct FileExporter<W: Write + Send + Debug> {

    /// The [`LineWriter`] to write to.

    writer: Arc<Mutex<LineWriter<W>>>,

    /// The [`Resource`] to associate spans with.

    resource: Resource,

}

impl<W: Write + Send + Debug> FileExporter<W> {

    /// Create a new [`FileExporter`]

}

// Note that OpenTelemetry can only represent events as children of spans, so this exporter only

// works on spans. If you want a event to be exported, you need to make sure it exists within some

// span.

impl<W: Write + Send + Debug> SpanExporter for FileExporter<W> {

            // See https://opentelemetry.io/docs/specs/otel/protocol/file-exporter/ for format

        }))

}