Add network id to stellar network info. (#2413)

Author: fnando

cmd/crates/soroban-test/tests/it/integration/network.rs

@@ -1,5 +1,5 @@
 use predicates::prelude::{predicate, PredicateBooleanExt};
-use soroban_test::TestEnv;
+use soroban_test::{AssertExt, TestEnv};
 
 #[tokio::test]
 #[allow(clippy::too_many_lines)]
@@ -52,3 +52,34 @@ async fn unset_default_network() {
         .stdout(predicate::str::contains("STELLAR_NETWORK=").not())
         .success();
 }
+
+#[tokio::test]
+async fn network_info_includes_id_in_text_output() {
+    let sandbox = &TestEnv::new();
+    sandbox
+        .new_assert_cmd("network")
+        .arg("info")
+        .assert()
+        .success()
+        .stderr(predicate::str::contains(
+            "Network Id: baefd734b8d3e48472cff83912375fedbc7573701912fe308af730180f97d74a",
+        ));
+}
+
+#[tokio::test]
+async fn network_info_includes_id_in_json_output() {
+    let sandbox = &TestEnv::new();
+    let output = sandbox
+        .new_assert_cmd("network")
+        .arg("info")
+        .arg("--output")
+        .arg("json")
+        .assert()
+        .success()
+        .stdout_as_str();
+    let info: serde_json::Value = serde_json::from_str(&output).unwrap();
+    assert_eq!(
+        info["id"],
+        "baefd734b8d3e48472cff83912375fedbc7573701912fe308af730180f97d74a"
+    );
+}

cmd/soroban-cli/src/commands/network/info.rs

@@ -1,3 +1,5 @@
+use sha2::{Digest, Sha256};
+
 use crate::commands::global;
 use crate::config::network;
 use crate::{config, print, rpc};
@@ -37,6 +39,7 @@ pub struct Cmd {
 
 #[derive(serde::Deserialize, serde::Serialize)]
 struct Info {
+    pub id: String,
     pub version: String,
     pub commit_hash: String,
     pub build_timestamp: String,
@@ -48,6 +51,7 @@ struct Info {
 
 impl Info {
     fn print_text(&self, print: &print::Print) {
+        print.infoln(format!("Network Id: {}", self.id));
         print.infoln(format!("Version: {}", self.version));
         print.infoln(format!("Commit Hash: {}", self.commit_hash));
         print.infoln(format!("Build Timestamp: {}", self.build_timestamp));
@@ -81,7 +85,9 @@ impl Cmd {
         let rpc_client = self.config.get_network()?.rpc_client()?;
         let network_result = rpc_client.get_network().await?;
         let version_result = rpc_client.get_version_info().await?;
+        let id = hex::encode(Sha256::digest(network_result.passphrase.as_bytes()));
         let info = Info {
+            id,
             version: version_result.version,
             commit_hash: version_result.commmit_hash,
             build_timestamp: version_result.build_timestamp,