From ee92b7824fe2e7d5ba0ed2d84f75e0b0e09660c0 Mon Sep 17 00:00:00 2001
From: subhamkrai <srai@redhat.com>
Date: Tue, 21 Sep 2021 14:02:25 +0530
Subject: [PATCH] core: add initial code

This commit adds inital code with
ceph command supported.

Also, adding the initial CI and updating the
Readme file.

Closes: https://github.com/rook/kubectl-rook-ceph/issues/2
Signed-off-by: subhamkrai <srai@redhat.com>
---
 .github/workflows/ci.yaml          | 55 ++++++++++++++++++++++++++++++
 .github/workflows/shell-check.yaml | 17 +++++++++
 README.md                          | 13 ++++++-
 kubectl-rook-ceph.sh               | 48 ++++++++++++++++++++++++++
 tests/github-action-helper.sh      | 32 +++++++++++++++++
 5 files changed, 164 insertions(+), 1 deletion(-)
 create mode 100644 .github/workflows/ci.yaml
 create mode 100644 .github/workflows/shell-check.yaml
 create mode 100755 kubectl-rook-ceph.sh
 create mode 100644 tests/github-action-helper.sh

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 00000000..83249002
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,55 @@
+name: kubectl plugin test
+on:
+  pull_request:
+
+defaults:
+  run:
+    # reference: https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#using-a-specific-shell
+    shell: bash --noprofile --norc -eo pipefail -x {0}
+
+jobs:
+  Plugin-test:
+    runs-on: ubuntu-latest
+    steps:
+    - name: checkout
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+
+    - name: setup minikube
+      uses: manusa/actions-setup-minikube@v2.4.2
+      with:
+        minikube version: 'v1.23.2'
+        kubernetes version: 'v1.22.2'
+        start args: --memory 6g --cpus=2
+        github token: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: print k8s cluster status
+      run:  |
+        minikube status
+        kubectl get nodes
+
+    - name: use local disk
+      run: tests/github-action-helper.sh use_local_disk
+
+    - name: deploy rook cluster
+      run: tests/github-action-helper.sh deploy_rook
+
+    - name: wait for operator pod to be ready
+      run: tests/github-action-helper.sh wait_for_pod_to_be_ready_state
+
+    - name: Test pluging with ceph commands
+      run: |
+        # when we have the kubectl krew plugin available we can use like `kubectl rook-ceph` but for now in local deployment we have to use `kubectl rook_ceph` as kubectl plugin has this limitation.
+        # Doc link to clear the comment above:
+          # https://krew.sigs.k8s.io/docs/developer-guide/develop/naming-guide/
+          # https://kubernetes.io/docs/tasks/extend-kubectl/kubectl-plugins/#naming-a-plugin
+          # https://krew.sigs.k8s.io/docs/developer-guide/distributing-with-krew/
+        sudo install kubectl-rook-ceph.sh /usr/local/bin/kubectl-rook_ceph
+        # run ceph commands with the plugin
+        kubectl rook_ceph ceph status
+        kubectl rook_ceph ceph status -f json
+        kubectl rook_ceph ceph status --format json-pretty
+        kubectl rook_ceph ceph mon dump
+        kubectl rook_ceph ceph mon stat
+        kubectl rook_ceph ceph osd tree
diff --git a/.github/workflows/shell-check.yaml b/.github/workflows/shell-check.yaml
new file mode 100644
index 00000000..56ec6110
--- /dev/null
+++ b/.github/workflows/shell-check.yaml
@@ -0,0 +1,17 @@
+name: ShellCheck
+on:
+  pull_request:
+
+jobs:
+  shellcheck:
+    name: Shellcheck
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Run ShellCheck
+      uses: ludeeus/action-shellcheck@master
+      with:
+        severity: warning
+        check_together: 'yes'
+        disable_matcher: false
+        format: gcc
diff --git a/README.md b/README.md
index 1118e926..e80395aa 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,18 @@ Provide common management and troubleshooting tools for the Rook Ceph storage pr
 
 ## Install
 
-TBD
+To install tool without krew
+
+1. Download the [kubectl-rook-ceph.sh](kubectl-rook-ceph.sh)
+2. ```sudo install kubectl-rook-ceph.sh /usr/local/bin/kubectl-rook_ceph```
+
+Now, use the tool with `kubectl`
+
+```console
+# example: `kubectl rook_ceph` as prefix with `ceph` command
+kubectl rook_ceph ceph status
+```
+
 
 ## Commands
 
diff --git a/kubectl-rook-ceph.sh b/kubectl-rook-ceph.sh
new file mode 100755
index 00000000..19cdaf8a
--- /dev/null
+++ b/kubectl-rook-ceph.sh
@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+
+# Copyright 2021 The Rook Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -eEuo pipefail
+
+usages() {
+  cat <<EOF
+Description:
+  'kubectl rook-ceph ceph' provides common management and troubleshooting tools for Ceph.
+
+Commands:
+  ceph - run any 'ceph' CLI command as given
+    args  - any 'ceph' CLI argument or flag
+
+Usage:
+  kubectl rook-ceph ceph [command] [args...]
+
+EOF
+}
+
+ceph_command() {
+  kubectl --namespace rook-ceph exec deploy/rook-ceph-operator -- /bin/bash -c "${*} --conf=/var/lib/rook/rook-ceph/rook-ceph.config"
+}
+
+main() {
+  if [ $# -ge 2 ]; then
+    if [ "$1" = "ceph" ]; then
+      ceph_command "$@"
+    fi
+  else
+    usages
+  fi
+}
+
+main "$@"
diff --git a/tests/github-action-helper.sh b/tests/github-action-helper.sh
new file mode 100644
index 00000000..5a553f26
--- /dev/null
+++ b/tests/github-action-helper.sh
@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+
+set -eEuo pipefail
+
+# source https://github.com/rook/rook
+use_local_disk() {
+    sudo swapoff --all --verbose
+    sudo umount /mnt
+    # search for the device since it keeps changing between sda and sdb
+    sudo wipefs --all --force /dev/$(lsblk|awk '/14G/ {print $1}'| head -1)1
+    sudo lsblk
+}
+
+deploy_rook() {
+    kubectl create -f https://raw.githubusercontent.com/rook/rook/master/cluster/examples/kubernetes/ceph/common.yaml
+    kubectl create -f https://raw.githubusercontent.com/rook/rook/master/cluster/examples/kubernetes/ceph/crds.yaml
+    kubectl create -f https://raw.githubusercontent.com/rook/rook/master/cluster/examples/kubernetes/ceph/operator.yaml
+    curl https://raw.githubusercontent.com/rook/rook/master/cluster/examples/kubernetes/ceph/cluster-test.yaml -o cluster-test.yaml
+    sed -i "s|#deviceFilter:|deviceFilter: $(lsblk|awk '/14G/ {print $1}'| head -1)|g" cluster-test.yaml
+    kubectl create -f cluster-test.yaml
+}
+
+# wait_for_pod_to_be_ready_state check for operator pod to in ready state
+wait_for_pod_to_be_ready_state() {
+  timeout 20 bash <<-'EOF'
+    until [ $(kubectl get pod -l app=rook-ceph-operator -n rook-ceph -o jsonpath='{.items[*].metadata.name}' -o custom-columns=READY:status.containerStatuses[*].ready | grep -c true) -eq 1 ]; do
+      echo "waiting for the pods to be in ready state"
+      sleep 1
+    done
+EOF
+
+}