pub const CURRENT_SPAN: &str = "span";
pub const FIELDS: &str = "fields";
pub const FILENAME: &str = "filename";
pub const LEVEL: &str = "level";
pub const LINE_NUMBER: &str = "line_number";
pub const SPAN_LIST: &str = "spans";
pub const TARGET: &str = "target";
pub const THREAD_ID: &str = "threadId";
pub const THREAD_NAME: &str = "threadName";
pub const TIMESTAMP: &str = "timestamp";