blockscout-service-launcher: Add features for each module (#529)

* Split launcher crate on 'database', 'launcher', and 'tracing' features

* Bump 'tonic' to 0.9, 'opentelemetry' to 0.19, 'opentelemetry-jaeger' to 0.18, 'tracing-opentelemetry' to 0.19

* Sort dependencies

* Bump to 0.8.0

libs/blockscout-service-launcher/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "blockscout-service-launcher"
-version = "0.7.1"
+version = "0.8.0"
 description = "Allows to launch blazingly fast blockscout rust services"
 license = "MIT"
 repository = "https://github.com/blockscout/blockscout-rs"
@@ -11,32 +11,67 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-serde = { version = "1.0", features = ["derive"] }
-actix-web = "4"
-actix-web-prom = "0.6"
-cfg-if = "1.0.0"
-tracing = "0.1"
-tonic = "0.8"
-futures = "0.3"
-prometheus = "0.13"
-opentelemetry = { version = "0.18", features = ["rt-tokio"] }
-opentelemetry-jaeger = { version = "0.17", features = ["rt-tokio"] }
-tracing-opentelemetry = "0.18"
-tracing-subscriber = { version = "0.3", features = ["env-filter", "json"] }
-anyhow = "1.0"
-tokio = { version = "1", features = ["rt-multi-thread"] }
+actix-web = { version = "4", optional = true }
+actix-web-prom = { version = "0.6", optional = true }
+anyhow = { version = "1.0", optional = true }
+futures = { version = "0.3", optional = true }
+cfg-if = { version = "1.0.0", optional = true }
+opentelemetry = { version = "0.19", optional = true }
+opentelemetry-jaeger = { version = "0.18", features = ["rt-tokio"], optional = true }
+prometheus = { version = "0.13", optional = true }
+serde = { version = "1.0", features = ["derive"], optional = true }
+tokio = { version = "1", optional = true }
+tonic = { version = ">= 0.8, < 0.10", optional = true }
+tracing = { version = "0.1", optional = true }
+tracing-opentelemetry = { version = "0.19", optional = true }
+tracing-subscriber = { version = "0.3", features = ["env-filter", "json"], optional = true }
+url = { version = "2.3.1", optional = true }
 
 # Dependencies required for database initialization
 
-sea-orm-0_11 = { package = "sea-orm", version = "0.11", optional = true }
-sea-orm-migration-0_11 = { package = "sea-orm-migration", version = "0.11", optional = true }
-
 sea-orm-0_10 = { package = "sea-orm", version = "0.10", optional = true }
 sea-orm-migration-0_10 = { package = "sea-orm-migration", version = "0.10", optional = true }
 
-url = { version = "2.3.1", optional = true }
+sea-orm-0_11 = { package = "sea-orm", version = "0.11", optional = true }
+sea-orm-migration-0_11 = { package = "sea-orm-migration", version = "0.11", optional = true }
 
 [features]
-database = ["url"]
-database-0_11 = ["sea-orm-0_11", "sea-orm-migration-0_11", "database"]
-database-0_10 = ["sea-orm-0_10", "sea-orm-migration-0_10", "database"]
+default = ["launcher", "tracing"]
+launcher = [
+    "dep:actix-web",
+    "dep:actix-web-prom",
+    "dep:anyhow",
+    "dep:futures",
+    "dep:prometheus",
+    "dep:serde",
+    "dep:tokio",
+    "dep:tonic",
+    "dep:tracing",
+]
+tracing = [
+    "dep:anyhow",
+    "dep:opentelemetry",
+    "dep:opentelemetry-jaeger",
+    "dep:serde",
+    "dep:tracing-opentelemetry",
+    "dep:tracing-subscriber",
+]
+
+# Cannot be used without corresponding sea-orm dependency.
+# Choose any of `database-0_10`, `database-0_11` for the actual usage.
+database = [
+    "dep:anyhow",
+    "dep:cfg-if",
+    "dep:tracing",
+    "dep:url",
+]
+database-0_10 = [
+    "database",
+    "dep:sea-orm-0_10",
+    "dep:sea-orm-migration-0_10",
+]
+database-0_11 = [
+    "database",
+    "dep:sea-orm-0_11",
+    "dep:sea-orm-migration-0_11",
+]

libs/blockscout-service-launcher/src/launch.rs → libs/blockscout-service-launcher/src/launcher/launch.rs

@@ -1,4 +1,4 @@
-use crate::{
+use super::{
     metrics::Metrics,
     router::{configure_router, HttpRouter},
     settings::{MetricsSettings, ServerSettings},

libs/blockscout-service-launcher/src/launcher/mod.rs

@@ -0,0 +1,8 @@
+mod launch;
+mod metrics;
+mod router;
+mod settings;
+
+pub use launch::{launch, LaunchSettings};
+pub use router::HttpRouter;
+pub use settings::*;

libs/blockscout-service-launcher/src/settings.rs → libs/blockscout-service-launcher/src/launcher/settings.rs

@@ -61,44 +61,3 @@ impl Default for MetricsSettings {
         }
     }
 }
-
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
-#[serde(rename_all = "snake_case")]
-pub enum TracingFormat {
-    Default,
-    Json,
-}
-
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
-#[serde(default, deny_unknown_fields)]
-pub struct TracingSettings {
-    /// If disabled, tracing is not initialized for neither
-    /// stdout, nor jaeger (enabled by default).
-    pub enabled: bool,
-    pub format: TracingFormat,
-}
-
-impl Default for TracingSettings {
-    fn default() -> Self {
-        Self {
-            enabled: true,
-            format: TracingFormat::Default,
-        }
-    }
-}
-
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
-#[serde(default, deny_unknown_fields)]
-pub struct JaegerSettings {
-    pub enabled: bool,
-    pub agent_endpoint: String,
-}
-
-impl Default for JaegerSettings {
-    fn default() -> Self {
-        Self {
-            enabled: false,
-            agent_endpoint: "127.0.0.1:6831".to_string(),
-        }
-    }
-}

libs/blockscout-service-launcher/src/lib.rs

@@ -1,13 +1,8 @@
-mod launch;
-mod metrics;
-mod router;
-mod settings;
-mod tracing;
-
-pub use crate::tracing::init_logs;
-pub use launch::{launch, LaunchSettings};
-pub use router::HttpRouter;
-pub use settings::*;
-
 #[cfg(feature = "database")]
 pub mod database;
+
+#[cfg(feature = "launcher")]
+pub mod launcher;
+
+#[cfg(feature = "tracing")]
+pub mod tracing;

libs/blockscout-service-launcher/src/tracing.rs → libs/blockscout-service-launcher/src/tracing/init.rs

@@ -1,4 +1,4 @@
-use crate::{JaegerSettings, TracingFormat, TracingSettings};
+use super::{JaegerSettings, TracingFormat, TracingSettings};
 use opentelemetry::{
     global::{self},
     sdk::{self, propagation::TraceContextPropagator},

libs/blockscout-service-launcher/src/tracing/mod.rs

@@ -0,0 +1,5 @@
+mod init;
+mod settings;
+
+pub use init::*;
+pub use settings::*;

libs/blockscout-service-launcher/src/tracing/settings.rs

@@ -0,0 +1,42 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum TracingFormat {
+    Default,
+    Json,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct TracingSettings {
+    /// If disabled, tracing is not initialized for neither
+    /// stdout, nor jaeger (enabled by default).
+    pub enabled: bool,
+    pub format: TracingFormat,
+}
+
+impl Default for TracingSettings {
+    fn default() -> Self {
+        Self {
+            enabled: true,
+            format: TracingFormat::Default,
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct JaegerSettings {
+    pub enabled: bool,
+    pub agent_endpoint: String,
+}
+
+impl Default for JaegerSettings {
+    fn default() -> Self {
+        Self {
+            enabled: false,
+            agent_endpoint: "127.0.0.1:6831".to_string(),
+        }
+    }
+}