start of logtail package
Signed-off-by: Christine Dodrill <me@christine.website>
This commit is contained in:
parent
dec722918c
commit
03d700bdb6
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@ -4,10 +4,6 @@
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debug/
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target/
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# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
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# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
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Cargo.lock
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# These are backup files generated by rustfmt
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**/*.rs.bk
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@ -0,0 +1,161 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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[[package]]
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name = "block-buffer"
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version = "0.9.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4152116fd6e9dadb291ae18fc1ec3575ed6d84c29642d97890f4b4a3417297e4"
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dependencies = [
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"generic-array",
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]
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[[package]]
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name = "cfg-if"
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version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
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[[package]]
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name = "cpufeatures"
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version = "0.1.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "66c99696f6c9dd7f35d486b9d04d7e6e202aa3e8c40d553f2fdf5e7e0c6a71ef"
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dependencies = [
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"libc",
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]
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[[package]]
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name = "digest"
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version = "0.9.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d3dd60d1080a57a05ab032377049e0591415d2b31afd7028356dbf3cc6dcb066"
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dependencies = [
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"generic-array",
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]
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[[package]]
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name = "generic-array"
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version = "0.14.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "501466ecc8a30d1d3b7fc9229b122b2ce8ed6e9d9223f1138d4babb253e51817"
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dependencies = [
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"typenum",
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"version_check",
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]
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[[package]]
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name = "getrandom"
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version = "0.2.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7fcd999463524c52659517fe2cea98493cfe485d10565e7b0fb07dbba7ad2753"
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dependencies = [
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"cfg-if",
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"libc",
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"wasi",
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]
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[[package]]
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name = "hex"
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version = "0.4.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
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[[package]]
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name = "libc"
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version = "0.2.100"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a1fa8cddc8fbbee11227ef194b5317ed014b8acbf15139bd716a18ad3fe99ec5"
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[[package]]
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name = "logtail"
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version = "0.1.0"
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dependencies = [
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"hex",
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"rand",
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"sha2",
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]
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[[package]]
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name = "opaque-debug"
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version = "0.3.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "624a8340c38c1b80fd549087862da4ba43e08858af025b236e509b6649fc13d5"
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[[package]]
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name = "ppv-lite86"
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version = "0.2.10"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
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[[package]]
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name = "rand"
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version = "0.8.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "2e7573632e6454cf6b99d7aac4ccca54be06da05aca2ef7423d22d27d4d4bcd8"
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dependencies = [
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"libc",
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"rand_chacha",
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"rand_core",
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"rand_hc",
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]
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[[package]]
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name = "rand_chacha"
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version = "0.3.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
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dependencies = [
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"ppv-lite86",
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"rand_core",
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]
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[[package]]
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name = "rand_core"
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version = "0.6.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
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dependencies = [
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"getrandom",
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]
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[[package]]
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name = "rand_hc"
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version = "0.3.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d51e9f596de227fda2ea6c84607f5558e196eeaf43c986b724ba4fb8fdf497e7"
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dependencies = [
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"rand_core",
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]
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[[package]]
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name = "sha2"
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version = "0.9.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b362ae5752fd2137731f9fa25fd4d9058af34666ca1966fb969119cc35719f12"
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dependencies = [
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"block-buffer",
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"cfg-if",
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"cpufeatures",
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"digest",
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"opaque-debug",
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]
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[[package]]
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name = "typenum"
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version = "1.13.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "879f6906492a7cd215bfa4cf595b600146ccfac0c79bcbd1f3000162af5e8b06"
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[[package]]
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name = "version_check"
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version = "0.9.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"
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[[package]]
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name = "wasi"
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version = "0.10.2+wasi-snapshot-preview1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
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@ -0,0 +1,2 @@
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[workspace]
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members = ["crates/*"]
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@ -0,0 +1,11 @@
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[package]
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name = "logtail"
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version = "0.1.0"
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edition = "2018"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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hex = "0.4"
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rand = "0"
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sha2 = "0.9"
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@ -0,0 +1,115 @@
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use sha2::{Digest, Sha256};
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use std::fmt;
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/// This represents an instance that write logs.
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/// Private IDs are only shared with the server when writing logs.
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#[derive(Clone, PartialEq, Eq)]
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pub struct PrivateID([u8; SHA256_SIZE]);
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impl PrivateID {
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/// Safely generate a new PrivateId for use in Config objects.
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/// You should persist this across runs of an instance of your app, so that
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/// it can append to the same log file on each run.
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pub fn new() -> Self {
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let mut id: [u8; 32] = rand::random();
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id[0] &= 248;
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id[31] = (id[31] & 127) | 64;
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Self(id)
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}
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/// Parse a PrivateID from its base 16 representation.
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pub fn from_hex(data: String) -> Result<Self, hex::FromHexError> {
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let mut id: [u8; 32] = [0; 32];
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hex::decode_to_slice(data, &mut id)?;
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Ok(Self(id))
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}
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/// Show a private ID as its base 16 representation.
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pub fn as_hex(&self) -> String {
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hex::encode(self.0)
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}
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pub fn as_public(&self) -> PublicID {
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let mut hasher = Sha256::new();
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hasher.update(&self.0);
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PublicID(hasher.finalize().into())
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}
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}
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impl fmt::Display for PrivateID {
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fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
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write!(f, "{}", self.as_hex())
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}
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}
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impl fmt::Debug for PrivateID {
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fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
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write!(f, "PrivateID({})", self.as_hex())
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}
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}
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const SHA256_SIZE: usize = 32;
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#[derive(Clone, PartialEq, Eq)]
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pub struct PublicID([u8; SHA256_SIZE]);
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impl PublicID {
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/// Parse a PublicID from its base 16 representation.
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pub fn from_hex(data: String) -> Result<Self, hex::FromHexError> {
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let mut id: [u8; 32] = [0; 32];
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hex::decode_to_slice(data, &mut id)?;
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Ok(Self(id))
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}
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/// Show a public ID as its base 16 representation.
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pub fn as_hex(&self) -> String {
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hex::encode(self.0)
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}
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}
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impl fmt::Display for PublicID {
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fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
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write!(f, "{}", self.as_hex())
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}
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}
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impl fmt::Debug for PublicID {
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fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
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write!(f, "PublicID({})", self.as_hex())
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn id() {
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let id = PrivateID::new();
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assert_ne!(id.as_hex(), "".to_string());
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}
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#[test]
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fn encode_decode() {
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let id = PrivateID::new();
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let as_hex = id.as_hex();
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let other_id = PrivateID::from_hex(as_hex).unwrap();
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assert_eq!(id, other_id);
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}
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#[test]
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fn to_public() {
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let id = PrivateID::from_hex(
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"6451f1641112c13e80daa7237d62391b028e638fef9cf91fd7ea347a5290a643".to_string(),
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)
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.unwrap();
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let pub_id = id.as_public();
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assert_eq!(
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pub_id,
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PublicID::from_hex(
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"db3a35df70555653e5fcff5bbc06e1573ad67e00744b56691c15cde72d17c449".to_string()
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)
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.unwrap()
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);
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}
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}
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