rename mode to consul_http_api

doc/book/reference-manual/configuration.md

@@ -318,16 +318,16 @@ Garage supports discovering other nodes of the cluster using Consul.  For this
 to work correctly, nodes need to know their IP address by which they can be
 reached by other nodes of the cluster, which should be set in `rpc_public_addr`.
 
-### `mode`
-
-Two modes of service discovery are supported: `node`  and `service`. `node`, the default will register a service using
-the `/v1/catalog` endpoints and mTLS (if `client_cert` and `client_key` are provided). `service` mode uses the
-`v1/agent` endpoints instead, where an optional `consul_http_token` may be provided.
-
 ### `consul_http_addr` and `service_name`
 
 The `consul_http_addr` parameter should be set to the full HTTP(S) address of the Consul server.
 
+### `consul_http_api`
+
+Two APIs for service registration are supported: `catalog`  and `agent`. `catalog`, the default, will register a service using
+the `/v1/catalog` endpoints and mTLS (if `client_cert` and `client_key` are provided). The `agent` API uses the
+`v1/agent` endpoints instead, where an optional `consul_http_token` may be provided.
+
 ### `service_name`
 
 `service_name` should be set to the service name under which Garage's
@@ -335,8 +335,8 @@ RPC ports are announced.
 
 ### `client_cert`, `client_key`
 
-`node` mode only. TLS client certificate and client key to use when communicating with Consul over TLS.
-Both are mandatory when doing so.
+TLS client certificate and client key to use when communicating with Consul over TLS. Both are mandatory when doing so.
+Only available when `consul_http_api = "catalog"`.
 
 ### `ca_cert`
 
@@ -349,8 +349,8 @@ Skip server hostname verification in TLS handshake.
 
 ### `consul_http_token`
 
-`service` mode only. Uses the provided token for communication with Consul. The policy assigned to this token
-should at least have these rules:
+Uses the provided token for communication with Consul. Only available when `consul_http_api = "agent"`.
+The policy assigned to this token should at least have these rules:
 
 ```hcl
 // the `service_name` specified above

src/rpc/consul.rs

@@ -8,8 +8,8 @@ use serde::{Deserialize, Serialize};
 
 use netapp::NodeID;
 
+use garage_util::config::ConsulDiscoveryAPI;
 use garage_util::config::ConsulDiscoveryConfig;
-use garage_util::config::ConsulDiscoveryMode;
 
 const META_PREFIX: &str = "fr-deuxfleurs-garagehq";
 
@@ -78,18 +78,18 @@ pub struct ConsulDiscovery {
 impl ConsulDiscovery {
 	pub fn new(config: ConsulDiscoveryConfig) -> Result<Self, ConsulError> {
 		let mut builder: reqwest::ClientBuilder = reqwest::Client::builder();
-		builder = builder.danger_accept_invalid_certs(config.tls_skip_verify);
-
-		let client: reqwest::Client = match &config.mode {
-			ConsulDiscoveryMode::Node => {
-				if let Some(ca_cert) = &config.ca_cert {
+		if config.tls_skip_verify {
+			builder = builder.danger_accept_invalid_certs(true);
+		} else if let Some(ca_cert) = &config.ca_cert {
 			let mut ca_cert_buf = vec![];
 			File::open(ca_cert)?.read_to_end(&mut ca_cert_buf)?;
 			builder = builder.use_rustls_tls();
-					builder = builder
-						.add_root_certificate(reqwest::Certificate::from_pem(&ca_cert_buf[..])?);
+			builder =
+				builder.add_root_certificate(reqwest::Certificate::from_pem(&ca_cert_buf[..])?);
 		}
 
+		let client: reqwest::Client = match &config.consul_http_api {
+			ConsulDiscoveryAPI::Catalog => {
 				match (&config.client_cert, &config.client_key) {
 					(Some(client_cert), Some(client_key)) => {
 						let mut client_cert_buf = vec![];
@@ -111,15 +111,7 @@ impl ConsulDiscovery {
 
 				builder.build()?
 			}
-			ConsulDiscoveryMode::Service => {
-				if let Some(ca_cert) = &config.ca_cert {
-					let mut ca_cert_buf = vec![];
-					File::open(ca_cert)?.read_to_end(&mut ca_cert_buf)?;
-					builder = builder
-						.add_root_certificate(reqwest::Certificate::from_pem(&ca_cert_buf[..])?);
-					builder = builder.use_rustls_tls();
-				}
-
+			ConsulDiscoveryAPI::Agent => {
 				if let Some(token) = &config.consul_http_token {
 					let mut headers = reqwest::header::HeaderMap::new();
 					headers.insert(
@@ -150,9 +142,9 @@ impl ConsulDiscovery {
 		let mut ret = vec![];
 		for ent in entries {
 			let ip = ent.address.parse::<IpAddr>().ok();
-			let pubkey = match &self.config.mode {
-				ConsulDiscoveryMode::Node => ent.node_meta.get("pubkey"),
-				ConsulDiscoveryMode::Service => {
+			let pubkey = match &self.config.consul_http_api {
+				ConsulDiscoveryAPI::Catalog => ent.node_meta.get("pubkey"),
+				ConsulDiscoveryAPI::Agent => {
 					ent.service_meta.get(&format!("{}-pubkey", META_PREFIX))
 				}
 			}
@@ -187,9 +179,9 @@ impl ConsulDiscovery {
 		]
 		.concat();
 
-		let meta_prefix: String = match &self.config.mode {
-			ConsulDiscoveryMode::Node => "".to_string(),
-			ConsulDiscoveryMode::Service => format!("{}-", META_PREFIX),
+		let meta_prefix: String = match &self.config.consul_http_api {
+			ConsulDiscoveryAPI::Catalog => "".to_string(),
+			ConsulDiscoveryAPI::Agent => format!("{}-", META_PREFIX),
 		};
 
 		let mut meta = HashMap::from([
@@ -206,15 +198,15 @@ impl ConsulDiscovery {
 		let url = format!(
 			"{}/v1/{}",
 			self.config.consul_http_addr,
-			(match &self.config.mode {
-				ConsulDiscoveryMode::Node => "catalog/register",
-				ConsulDiscoveryMode::Service => "agent/service/register?replace-existing-checks",
+			(match &self.config.consul_http_api {
+				ConsulDiscoveryAPI::Catalog => "catalog/register",
+				ConsulDiscoveryAPI::Agent => "agent/service/register?replace-existing-checks",
 			})
 		);
 
 		let req = self.client.put(&url);
-		let http = (match &self.config.mode {
-			ConsulDiscoveryMode::Node => req.json(&ConsulPublishEntry {
+		let http = (match &self.config.consul_http_api {
+			ConsulDiscoveryAPI::Catalog => req.json(&ConsulPublishEntry {
 				node: node.clone(),
 				address: rpc_public_addr.ip(),
 				node_meta: meta.clone(),
@@ -227,7 +219,7 @@ impl ConsulDiscovery {
 					port: rpc_public_addr.port(),
 				},
 			}),
-			ConsulDiscoveryMode::Service => req.json(&ConsulPublishService {
+			ConsulDiscoveryAPI::Agent => req.json(&ConsulPublishService {
 				service_id: node.clone(),
 				service_name: self.config.service_name.clone(),
 				tags,

src/util/config.rs

@@ -136,22 +136,22 @@ pub struct AdminConfig {
 }
 
 #[derive(Deserialize, Debug, Clone)]
-pub enum ConsulDiscoveryMode {
+pub enum ConsulDiscoveryAPI {
 	#[serde(rename_all = "lowercase")]
-	Node,
-	Service,
+	Catalog,
+	Agent,
 }
-impl ConsulDiscoveryMode {
+impl ConsulDiscoveryAPI {
 	fn default() -> Self {
-		ConsulDiscoveryMode::Node
+		ConsulDiscoveryAPI::Catalog
 	}
 }
 
 #[derive(Deserialize, Debug, Clone)]
 pub struct ConsulDiscoveryConfig {
-	/// Mode of consul operation: either `node` (the default) or `service`
-	#[serde(default = "ConsulDiscoveryMode::default")]
-	pub mode: ConsulDiscoveryMode,
+	/// The consul api to use when registering: either `catalog` (the default) or `agent`
+	#[serde(default = "ConsulDiscoveryAPI::default")]
+	pub consul_http_api: ConsulDiscoveryAPI,
 	/// Consul http or https address to connect to to discover more peers
 	pub consul_http_addr: String,
 	/// Consul service name to use