236 lines
6.2 KiB
Rust
236 lines
6.2 KiB
Rust
//! Contains type and functions related to Garage configuration file
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use std::io::Read;
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use std::net::SocketAddr;
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use std::path::PathBuf;
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use serde::{de, Deserialize};
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use crate::error::Error;
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/// Represent the whole configuration
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#[derive(Deserialize, Debug, Clone)]
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pub struct Config {
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/// Path where to store metadata. Should be fast, but low volume
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pub metadata_dir: PathBuf,
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/// Path where to store data. Can be slower, but need higher volume
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pub data_dir: PathBuf,
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/// Size of data blocks to save to disk
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#[serde(default = "default_block_size")]
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pub block_size: usize,
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/// Replication mode. Supported values:
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/// - none, 1 -> no replication
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/// - 2 -> 2-way replication
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/// - 3 -> 3-way replication
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// (we can add more aliases for this later)
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pub replication_mode: String,
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/// Zstd compression level used on data blocks
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#[serde(
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deserialize_with = "deserialize_compression",
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default = "default_compression"
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)]
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pub compression_level: Option<i32>,
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/// RPC secret key: 32 bytes hex encoded
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pub rpc_secret: String,
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/// Address to bind for RPC
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pub rpc_bind_addr: SocketAddr,
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/// Public IP address of this node
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pub rpc_public_addr: Option<String>,
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/// Timeout for Netapp's ping messagess
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pub rpc_ping_timeout_msec: Option<u64>,
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/// Timeout for Netapp RPC calls
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pub rpc_timeout_msec: Option<u64>,
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// -- Bootstraping and discovery
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/// Bootstrap peers RPC address
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#[serde(default)]
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pub bootstrap_peers: Vec<String>,
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/// Configuration for automatic node discovery through Consul
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#[serde(default)]
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pub consul_discovery: Option<ConsulDiscoveryConfig>,
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/// Configuration for automatic node discovery through Kubernetes
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#[serde(default)]
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pub kubernetes_discovery: Option<KubernetesDiscoveryConfig>,
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// -- DB
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/// Database engine to use for metadata (options: sled, sqlite, lmdb)
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#[serde(default = "default_db_engine")]
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pub db_engine: String,
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/// Sled cache size, in bytes
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#[serde(default = "default_sled_cache_capacity")]
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pub sled_cache_capacity: u64,
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/// Sled flush interval in milliseconds
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#[serde(default = "default_sled_flush_every_ms")]
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pub sled_flush_every_ms: u64,
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// -- APIs
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/// Configuration for S3 api
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pub s3_api: S3ApiConfig,
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/// Configuration for K2V api
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pub k2v_api: Option<K2VApiConfig>,
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/// Configuration for serving files as normal web server
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pub s3_web: Option<WebConfig>,
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/// Configuration for the admin API endpoint
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#[serde(default = "Default::default")]
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pub admin: AdminConfig,
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}
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/// Configuration for S3 api
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#[derive(Deserialize, Debug, Clone)]
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pub struct S3ApiConfig {
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/// Address and port to bind for api serving
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pub api_bind_addr: Option<SocketAddr>,
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/// S3 region to use
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pub s3_region: String,
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/// Suffix to remove from domain name to find bucket. If None,
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/// vhost-style S3 request are disabled
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pub root_domain: Option<String>,
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}
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/// Configuration for K2V api
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#[derive(Deserialize, Debug, Clone)]
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pub struct K2VApiConfig {
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/// Address and port to bind for api serving
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pub api_bind_addr: SocketAddr,
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}
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/// Configuration for serving files as normal web server
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#[derive(Deserialize, Debug, Clone)]
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pub struct WebConfig {
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/// Address and port to bind for web serving
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pub bind_addr: SocketAddr,
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/// Suffix to remove from domain name to find bucket
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pub root_domain: String,
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}
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/// Configuration for the admin and monitoring HTTP API
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#[derive(Deserialize, Debug, Clone, Default)]
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pub struct AdminConfig {
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/// Address and port to bind for admin API serving
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pub api_bind_addr: Option<SocketAddr>,
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/// Bearer token to use to scrape metrics
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pub metrics_token: Option<String>,
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/// Bearer token to use to access Admin API endpoints
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pub admin_token: Option<String>,
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/// OTLP server to where to export traces
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pub trace_sink: Option<String>,
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}
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#[derive(Deserialize, Debug, Clone)]
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pub struct ConsulDiscoveryConfig {
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/// Consul http or https address to connect to to discover more peers
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pub consul_http_addr: String,
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/// Consul service name to use
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pub service_name: String,
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/// CA TLS certificate to use when connecting to Consul
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pub ca_cert: Option<String>,
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/// Client TLS certificate to use when connecting to Consul
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pub client_cert: Option<String>,
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/// Client TLS key to use when connecting to Consul
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pub client_key: Option<String>,
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/// Skip TLS hostname verification
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#[serde(default)]
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pub tls_skip_verify: bool,
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}
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#[derive(Deserialize, Debug, Clone)]
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pub struct KubernetesDiscoveryConfig {
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/// Kubernetes namespace the service discovery resources are be created in
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pub namespace: String,
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/// Service name to filter for in k8s custom resources
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pub service_name: String,
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/// Skip creation of the garagenodes CRD
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#[serde(default)]
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pub skip_crd: bool,
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}
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fn default_db_engine() -> String {
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"sled".into()
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}
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fn default_sled_cache_capacity() -> u64 {
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128 * 1024 * 1024
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}
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fn default_sled_flush_every_ms() -> u64 {
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2000
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}
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fn default_block_size() -> usize {
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1048576
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}
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/// Read and parse configuration
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pub fn read_config(config_file: PathBuf) -> Result<Config, Error> {
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let mut file = std::fs::OpenOptions::new()
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.read(true)
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.open(config_file.as_path())?;
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let mut config = String::new();
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file.read_to_string(&mut config)?;
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Ok(toml::from_str(&config)?)
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}
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fn default_compression() -> Option<i32> {
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Some(1)
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}
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fn deserialize_compression<'de, D>(deserializer: D) -> Result<Option<i32>, D::Error>
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where
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D: de::Deserializer<'de>,
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{
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use std::convert::TryFrom;
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struct OptionVisitor;
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impl<'de> serde::de::Visitor<'de> for OptionVisitor {
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type Value = Option<i32>;
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fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
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formatter.write_str("int or 'none'")
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}
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fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
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where
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E: de::Error,
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{
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if value.eq_ignore_ascii_case("none") {
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Ok(None)
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} else {
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Err(E::custom(format!(
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"Invalid compression level: '{}', should be a number, or 'none'",
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value
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)))
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}
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}
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fn visit_i64<E>(self, v: i64) -> Result<Self::Value, E>
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where
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E: de::Error,
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{
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i32::try_from(v)
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.map(Some)
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.map_err(|_| E::custom("Compression level out of bound".to_owned()))
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}
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fn visit_u64<E>(self, v: u64) -> Result<Self::Value, E>
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where
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E: de::Error,
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{
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i32::try_from(v)
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.map(Some)
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.map_err(|_| E::custom("Compression level out of bound".to_owned()))
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}
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}
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deserializer.deserialize_any(OptionVisitor)
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}
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