cloudfront-logs 0.9.1

AWS CloudFront log line parser
Documentation 
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use crate::{shared::*, types::*, CheckedRawLogLine};

pub use LogLine as SimpleLogLine;

/// A simple log line representation owning its field data
///
/// Only primitive types from Rust's core/std library and types composable from them are used for the fields.
/// Therefore types like Date and Time are not present, because they require external dependencies.
#[derive(Debug, PartialEq)]
pub struct LogLine {
    pub date: String,
    pub time: String,
    pub x_edge_location: String,
    pub sc_bytes: u64,
    pub c_ip: IpAddr,
    pub cs_method: String,
    pub cs_host: String,
    pub cs_uri_stem: String,
    pub sc_status: u16,
    pub cs_referer: Option<String>,
    pub cs_user_agent: String,
    pub cs_uri_query: Option<String>,
    pub cs_cookie: Option<String>,
    pub x_edge_result_type: EdgeResultType,
    pub x_edge_request_id: String,
    pub x_host_header: String,
    pub cs_protocol: CsProtocol,
    pub cs_bytes: u64,
    pub time_taken: Duration,
    pub x_forwarded_for: Option<ForwardedForAddrs>,
    pub ssl_protocol: Option<SslProtocol>,
    pub ssl_cipher: Option<String>, // *1
    pub x_edge_response_result_type: EdgeResultType,
    pub cs_protocol_version: CsProtocolVersion,
    pub fle_status: Option<String>, // *1
    pub fle_encrypted_fields: Option<u64>,
    pub c_port: u16,
    pub time_to_first_byte: Duration,
    pub x_edge_detailed_result_type: DetailedEdgeResultType,
    pub sc_content_type: String,
    pub sc_content_len: u64,
    pub sc_range_start: Option<i64>,
    pub sc_range_end: Option<i64>,
}

// *1: These fields are not typed (enums),
// currently I have no use case for them and some of those have too many variants.

impl LogLine {
    pub fn try_from_with_raw(line: &str) -> Result<Self, &'static str> {
        let raw = CheckedRawLogLine::try_from(line)?;
        Self::try_from(raw)
    }
}

impl<'a> TryFrom<&'a str> for LogLine {
    type Error = &'static str;

    fn try_from(line: &'a str) -> Result<Self, Self::Error> {
        validate_line(line)?;

        let mut iter = MemchrTabSplitter::new(line);

        let line = Self {
            date: iter.next().unwrap().to_string(),
            time: iter.next().unwrap().to_string(),
            x_edge_location: iter.next().unwrap().to_string(),
            sc_bytes: iter
                .next()
                .unwrap()
                .parse::<u64>()
                .map_err(|_e| "sc_bytes invalid")?,
            c_ip: iter.next().unwrap().parse().map_err(|_e| "c_ip invalid")?,
            cs_method: iter.next().unwrap().to_string(),
            cs_host: iter.next().unwrap().to_string(),
            cs_uri_stem: iter.next().unwrap().to_string(),
            sc_status: iter
                .next()
                .unwrap()
                .parse::<u16>()
                .map_err(|_e| "sc_status invalid")?,
            cs_referer: iter.next().unwrap().to_optional_string(),
            cs_user_agent: iter.next().unwrap().to_string(),
            cs_uri_query: iter.next().unwrap().to_optional_string(),
            cs_cookie: iter.next().unwrap().to_optional_string(),
            x_edge_result_type: iter
                .next()
                .unwrap()
                .parse()
                .map_err(|_e| "x_edge_result_type invalid")?,
            x_edge_request_id: iter.next().unwrap().to_string(),
            x_host_header: iter.next().unwrap().to_string(),
            cs_protocol: iter
                .next()
                .unwrap()
                .parse()
                .map_err(|_e| "cs_protocol invalid")?,
            cs_bytes: iter
                .next()
                .unwrap()
                .parse::<u64>()
                .map_err(|_e| "cs_bytes invalid")?,
            time_taken: iter
                .next()
                .unwrap()
                .parse::<f64>()
                .map(Duration::from_secs_f64)
                .map_err(|_e| "time_taken invalid")?,
            x_forwarded_for: iter
                .next()
                .and_then(as_optional_t)
                .transpose()
                .map_err(|_e| "x_forwarded_for invalid")?,
            ssl_protocol: iter
                .next()
                .and_then(as_optional_t)
                .transpose()
                .map_err(|_e| "ssl_protocol invalid")?,
            ssl_cipher: iter.next().unwrap().to_optional_string(),
            x_edge_response_result_type: iter
                .next()
                .unwrap()
                .parse()
                .map_err(|_e| "x_edge_response_result_type invalid")?,
            cs_protocol_version: iter
                .next()
                .unwrap()
                .parse()
                .map_err(|_e| "cs_protocol_version invalid")?,
            fle_status: iter.next().unwrap().to_optional_string(),
            fle_encrypted_fields: iter
                .next()
                .and_then(as_optional_t)
                .transpose()
                .map_err(|_e| "fle_encrypted_fields invalid")?,
            c_port: iter
                .next()
                .unwrap()
                .parse::<u16>()
                .map_err(|_e| "c_port invalid")?,
            time_to_first_byte: iter
                .next()
                .unwrap()
                .parse::<f64>()
                .map(Duration::from_secs_f64)
                .map_err(|_e| "time_to_first_byte invalid")?,
            x_edge_detailed_result_type: iter
                .next()
                .unwrap()
                .parse()
                .map_err(|_e| "x_edge_detailed_result_type invalid")?,
            sc_content_type: iter.next().unwrap().to_string(),
            sc_content_len: iter
                .next()
                .unwrap()
                .parse::<u64>()
                .map_err(|_e| "sc_content_len invalid")?,
            sc_range_start: iter
                .next()
                .and_then(as_optional_t)
                .transpose()
                .map_err(|_e| "sc_range_start invalid")?,
            sc_range_end: iter
                .next()
                .and_then(as_optional_t)
                .transpose()
                .map_err(|_e| "sc_range_end invalid")?,
        };
        Ok(line)
    }
}

impl TryFrom<CheckedRawLogLine<'_>> for LogLine {
    type Error = &'static str;

    fn try_from(raw: CheckedRawLogLine<'_>) -> Result<Self, Self::Error> {
        let line = Self {
            date: raw.date.to_string(),
            time: raw.time.to_string(),
            x_edge_location: raw.x_edge_location.to_string(),
            sc_bytes: raw
                .sc_bytes
                .parse::<u64>()
                .map_err(|_e| "sc_bytes invalid")?,
            c_ip: raw.c_ip.parse().map_err(|_e| "c_ip invalid")?,
            cs_method: raw.cs_method.to_string(),
            cs_host: raw.cs_host.to_string(),
            cs_uri_stem: raw.cs_uri_stem.to_string(),
            sc_status: raw
                .sc_status
                .parse::<u16>()
                .map_err(|_e| "sc_status invalid")?,
            cs_referer: raw.cs_referer.to_optional_string(),
            cs_user_agent: raw.cs_user_agent.to_string(),
            cs_uri_query: raw.cs_uri_query.to_optional_string(),
            cs_cookie: raw.cs_cookie.to_optional_string(),
            x_edge_result_type: raw
                .x_edge_result_type
                .parse()
                .map_err(|_e| "x_edge_result_type invalid")?,
            x_edge_request_id: raw.x_edge_request_id.to_string(),
            x_host_header: raw.x_host_header.to_string(),
            cs_protocol: raw
                .cs_protocol
                .parse()
                .map_err(|_e| "cs_protocol invalid")?,
            cs_bytes: raw
                .cs_bytes
                .parse::<u64>()
                .map_err(|_e| "cs_bytes invalid")?,
            time_taken: raw
                .time_taken
                .parse::<f64>()
                .map(Duration::from_secs_f64)
                .map_err(|_e| "time_taken invalid")?,
            x_forwarded_for: parse_as_option(raw.x_forwarded_for)
                .map_err(|_e| "x_forwarded_for invalid")?,
            ssl_protocol: parse_as_option(raw.ssl_protocol).map_err(|_e| "ssl_protocol invalid")?,
            ssl_cipher: raw.ssl_cipher.to_optional_string(),
            x_edge_response_result_type: raw
                .x_edge_response_result_type
                .parse()
                .map_err(|_e| "x_edge_response_result_type invalid")?,
            cs_protocol_version: raw
                .cs_protocol_version
                .parse()
                .map_err(|_e| "cs_protocol_version invalid")?,
            fle_status: raw.fle_status.to_optional_string(),
            fle_encrypted_fields: parse_as_option(raw.fle_encrypted_fields)
                .map_err(|_e| "fle_encrypted_fields invalid")?,
            c_port: raw.c_port.parse::<u16>().map_err(|_e| "c_port invalid")?,
            time_to_first_byte: raw
                .time_to_first_byte
                .parse::<f64>()
                .map(Duration::from_secs_f64)
                .map_err(|_e| "time_to_first_byte invalid")?,
            x_edge_detailed_result_type: raw
                .x_edge_detailed_result_type
                .parse()
                .map_err(|_e| "x_edge_detailed_result_type invalid")?,
            sc_content_type: raw.sc_content_type.to_string(),
            sc_content_len: raw
                .sc_content_len
                .parse::<u64>()
                .map_err(|_e| "sc_content_len invalid")?,
            sc_range_start: parse_as_option(raw.sc_range_start)
                .map_err(|_e| "sc_range_start invalid")?,
            sc_range_end: parse_as_option(raw.sc_range_end).map_err(|_e| "sc_range_end invalid")?,
        };
        Ok(line)
    }
}