Merge branch 'master' into review

1 files changed, 169 insertions, 0 deletions

diff --git a/src/utils/deploy.rs b/src/utils/deploy.rs
new file mode 100644
index 0000000..59217df
--- /dev/null
+++ b/src/utils/deploy.rs
@@ -0,0 +1,169 @@
+// SPDX-FileCopyrightText: 2020 Serokell <https://serokell.io/>
+//
+// SPDX-License-Identifier: MPL-2.0
+
+use std::borrow::Cow;
+use tokio::process::Command;
+
+fn build_activate_command(
+    activate_path_str: String,
+    sudo: &Option<String>,
+    profile_path: &str,
+    closure: &str,
+    bootstrap_cmd: &Option<String>,
+    auto_rollback: bool,
+    temp_path: &Cow<str>,
+    confirm_timeout: u16,
+    magic_rollback: bool,
+) -> String {
+    let mut self_activate_command = format!(
+        "{} '{}' '{}' --temp-path {} --confirm-timeout {}",
+        activate_path_str, profile_path, closure, temp_path, confirm_timeout
+    );
+
+    if magic_rollback {
+        self_activate_command = format!("{} --magic-rollback", self_activate_command);
+    }
+
+    if auto_rollback {
+        self_activate_command = format!("{} --auto-rollback", self_activate_command);
+    }
+
+    if let Some(ref bootstrap_cmd) = bootstrap_cmd {
+        self_activate_command = format!(
+            "{} --bootstrap-cmd '{}'",
+            self_activate_command, bootstrap_cmd
+        );
+    }
+
+    if let Some(sudo_cmd) = &sudo {
+        self_activate_command = format!("{} {}", sudo_cmd, self_activate_command);
+    }
+
+    self_activate_command
+}
+
+#[test]
+fn test_activation_command_builder() {
+    let activate_path_str = "/blah/bin/activate".to_string();
+    let sudo = Some("sudo -u test".to_string());
+    let profile_path = "/blah/profiles/test";
+    let closure = "/blah/etc";
+    let bootstrap_cmd = None;
+    let auto_rollback = true;
+    let temp_path = &"/tmp/deploy-rs".into();
+    let confirm_timeout = 30;
+    let magic_rollback = true;
+
+    assert_eq!(
+        build_activate_command(
+            activate_path_str,
+            &sudo,
+            profile_path,
+            closure,
+            &bootstrap_cmd,
+            auto_rollback,
+            temp_path,
+            confirm_timeout,
+            magic_rollback
+        ),
+        "sudo -u test /blah/bin/activate '/blah/profiles/test' '/blah/etc' --temp-path /tmp/deploy-rs --confirm-timeout 30 --magic-rollback --auto-rollback"
+            .to_string(),
+    );
+}
+
+pub async fn deploy_profile(
+    deploy_data: &super::DeployData<'_>,
+    deploy_defs: &super::DeployDefs<'_>,
+) -> Result<(), Box<dyn std::error::Error>> {
+    info!(
+        "Activating profile `{}` for node `{}`",
+        deploy_data.profile_name, deploy_data.node_name
+    );
+
+    let activate_path_str = super::deploy_path_to_activate_path_str(&deploy_defs.current_exe)?;
+
+    let temp_path: Cow<str> = match &deploy_data.merged_settings.temp_path {
+        Some(x) => x.into(),
+        None => "/tmp/deploy-rs".into(),
+    };
+
+    let confirm_timeout = deploy_data.merged_settings.confirm_timeout.unwrap_or(30);
+
+    let magic_rollback = deploy_data.merged_settings.magic_rollback.unwrap_or(false);
+
+    let auto_rollback = deploy_data.merged_settings.auto_rollback.unwrap_or(true);
+
+    let self_activate_command = build_activate_command(
+        activate_path_str,
+        &deploy_defs.sudo,
+        &deploy_defs.profile_path,
+        &deploy_data.profile.profile_settings.path,
+        &deploy_data.profile.profile_settings.bootstrap,
+        auto_rollback,
+        &temp_path,
+        confirm_timeout,
+        magic_rollback,
+    );
+
+    debug!("Constructed activation command: {}", self_activate_command);
+
+    let hostname = match deploy_data.cmd_overrides.hostname {
+        Some(ref x) => x,
+        None => &deploy_data.node.node_settings.hostname,
+    };
+
+    let mut c = Command::new("ssh");
+    let mut ssh_command = c
+        .arg("-t")
+        .arg(format!("ssh://{}@{}", deploy_defs.ssh_user, hostname));
+
+    for ssh_opt in &deploy_data.merged_settings.ssh_opts {
+        ssh_command = ssh_command.arg(ssh_opt);
+    }
+
+    let ssh_exit_status = ssh_command.arg(self_activate_command).status().await?;
+
+    if !ssh_exit_status.success() {
+        good_panic!("Activation over SSH failed");
+    }
+
+    info!("Success activating!");
+
+    if magic_rollback {
+        info!("Attempting to confirm activation");
+
+        let mut c = Command::new("ssh");
+        let mut ssh_confirm_command = c.arg(format!("ssh://{}@{}", deploy_defs.ssh_user, hostname));
+
+        for ssh_opt in &deploy_data.merged_settings.ssh_opts {
+            ssh_confirm_command = ssh_confirm_command.arg(ssh_opt);
+        }
+
+        let lock_hash = &deploy_data.profile.profile_settings.path[11 /* /nix/store/ */ ..];
+        let lock_path = format!("{}/activating-{}", temp_path, lock_hash);
+
+        let mut confirm_command = format!("rm {}", lock_path);
+        if let Some(sudo_cmd) = &deploy_defs.sudo {
+            confirm_command = format!("{} {}", sudo_cmd, confirm_command);
+        }
+
+        debug!(
+            "Attempting to run command to confirm deployment: {}",
+            confirm_command
+        );
+
+        let ssh_exit_status = ssh_confirm_command.arg(confirm_command).status().await?;
+
+        if !ssh_exit_status.success() {
+            good_panic!(
+                "Failed to confirm deployment, the node will roll back in <{} seconds",
+                confirm_timeout
+            );
+        }
+
+        info!("Deployment confirmed.");
+    }
+
+    Ok(())
+}