Add skip-cardano-bin-download option in e2e

This option allows to use directly the cardano-cli & cardano-node binary files
in the /mithril-devnet directory, without having to download them on IOHK github repository

Author: dlachaume

mithril-test-lab/mithril-devnet/devnet-mkfiles.sh

@@ -41,6 +41,12 @@ NUM_POOL_NODES=$3
 SLOT_LENGTH=$4
 EPOCH_LENGTH=$5
 
+if [[ "$SKIP_CARDANO_BIN_DOWNLOAD" = "true" ]]; then
+  SKIP_CARDANO_BIN_DOWNLOAD=true
+else
+  SKIP_CARDANO_BIN_DOWNLOAD=false
+fi
+
 SUPPLY=100000000000
 NETWORK_MAGIC=42
 SECURITY_PARAM=2
@@ -105,10 +111,12 @@ if ! mkdir -p "${ROOT}"; then
   exit
 fi
 
-# download cardano-cli & cardano-node
-curl -sL ${CARDANO_BINARY_URL} --output cardano-bin.tar.gz
-tar xzf cardano-bin.tar.gz ./cardano-cli ./cardano-node 
-rm -f cardano-bin.tar.gz
+# download cardano-cli & cardano-node if enabled (default: yes)
+if [ "$SKIP_CARDANO_BIN_DOWNLOAD" = false ]; then
+  curl -sL ${CARDANO_BINARY_URL} --output cardano-bin.tar.gz
+  tar xzf cardano-bin.tar.gz ./cardano-cli ./cardano-node 
+  rm -f cardano-bin.tar.gz
+fi
 
 # and copy cardano-cli & cardano-node
 cp cardano-cli ${ROOT}/cardano-cli

mithril-test-lab/mithril-end-to-end/src/devnet/runner.rs

@@ -59,6 +59,7 @@ impl Devnet {
         number_of_pool_nodes: u8,
         cardano_slot_length: f64,
         cardano_epoch_length: f64,
+        skip_cardano_bin_download: bool,
     ) -> Result<Devnet, String> {
         let bootstrap_script = "devnet-mkfiles.sh";
         let bootstrap_script_path = devnet_scripts_dir
@@ -79,6 +80,10 @@ impl Devnet {
         }
 
         let mut bootstrap_command = Command::new(&bootstrap_script_path);
+        bootstrap_command.env(
+            "SKIP_CARDANO_BIN_DOWNLOAD",
+            skip_cardano_bin_download.to_string(),
+        );
         let command_args = &[
             artifacts_target_dir.to_str().unwrap(),
             &number_of_bft_nodes.to_string(),

mithril-test-lab/mithril-end-to-end/src/main.rs

@@ -57,6 +57,10 @@ pub struct Args {
     /// Enable run only mode
     #[clap(long)]
     run_only: bool,
+
+    /// Skip cardano binaries download
+    #[clap(long)]
+    skip_cardano_bin_download: bool,
 }
 
 #[tokio::main]
@@ -84,6 +88,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
         args.number_of_pool_nodes,
         args.cardano_slot_length,
         args.cardano_epoch_length,
+        args.skip_cardano_bin_download,
     )
     .await?;