Detect IONOS managed Stackable clusters and skip installing releases

Author: sbernauer

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Added
 
 - Added Listener operator to supported operators ([#143](https://github.com/stackabletech/stackablectl/pull/143))
+- Detect IONOS managed Stackable clusters and skip installing releases ([#147](https://github.com/stackabletech/stackablectl/pull/147))
 
 ## [0.5.0] - 2022-09-14
 

Cargo.lock

@@ -19,6 +19,7 @@ kube = "0.74" # Using openssl (and not native-tls) as kube-rs team tries to move
 lazy_static = "1.4"
 log = "0.4"
 openssl = { version = "0.10.36", features = ["vendored"] } # Must match version from kube
+regex = "1.6"
 which = "4.2"
 semver = "1.0"
 serde = { version = "1.0", features = ["derive"]}

Cargo.toml

@@ -0,0 +1,36 @@
+use std::error::Error;
+
+use k8s_openapi::api::apps::v1::Deployment;
+use kube::{api::ListParams, Api, ResourceExt};
+use lazy_static::lazy_static;
+use regex::Regex;
+
+/// We asked the IONOS guys and agreed an this way of identifying a managed stackable cluster
+/// One ideas was to give the Namespace `stackable-operators` as special label
+///
+/// The current solution lists the deployment in the `stackable-operators` namespace and searches for matching names
+/// This is far from the ideal solution and should be improved when there are better points of identifying a managed stackable cluster
+pub async fn detect_ionos_managed_stackable_operators() -> Result<Vec<String>, Box<dyn Error>> {
+    lazy_static! {
+        static ref OPERATOR_DEPLOYMENT_REGEX: Regex =
+            Regex::new("dp-[0-9a-f]{20}-([a-z-]+)-operator-deployment").unwrap();
+    }
+
+    let mut operators = Vec::new();
+
+    let client = crate::kube::get_client().await?;
+    let deployments = Api::<Deployment>::namespaced(client, "stackable-operators")
+        .list(&ListParams::default())
+        .await?;
+    for deployment in deployments {
+        let deployment_name = deployment.name_unchecked();
+        if let Some(operator_name) = OPERATOR_DEPLOYMENT_REGEX
+            .captures(&deployment_name)
+            .and_then(|cap| cap.get(1).map(|m| m.as_str()))
+        {
+            operators.push(operator_name.to_string());
+        }
+    }
+
+    Ok(operators)
+}

src/ionos.rs

@@ -9,6 +9,7 @@ mod arguments;
 mod demo;
 mod helm;
 mod helpers;
+mod ionos;
 mod kind;
 mod kube;
 mod operator;

src/main.rs

@@ -1,4 +1,4 @@
-use crate::{arguments::OutputType, helpers, kind, operator, operator::Operator, CliArgs};
+use crate::{arguments::OutputType, helpers, ionos, kind, operator, operator::Operator, CliArgs};
 use cached::proc_macro::cached;
 use clap::{ArgGroup, Parser, ValueHint};
 use indexmap::IndexMap;
@@ -201,6 +201,15 @@ pub async fn install_release(
     include_products: &[String],
     exclude_products: &[String],
 ) -> Result<(), Box<dyn Error>> {
+    let managed_stackable_operators = ionos::detect_ionos_managed_stackable_operators().await?;
+    if !managed_stackable_operators.is_empty() {
+        warn!("stackablectl detected that you are running on a managed Stackable cluster operated by IONOS. \
+        As IONOS has installed the Stackable operators already, stackablectl is not going to install them a second time. \
+        Please make sure that your managed Stackable cluster uses the same Stackable operator versions as the release {release_name}. \
+        You can list the Stackable operator versions of the {release_name} release using `stackablectl release describe {release_name}`.");
+        return Ok(());
+    }
+
     info!("Installing release {release_name}");
     let release = get_release(release_name).await;