From d956e3e653b61075ef0a49ea3645993ad6805058 Mon Sep 17 00:00:00 2001
From: Andrew Lock <andrewlock.net@gmail.com>
Date: Sat, 10 Oct 2020 20:26:24 +0100
Subject: [PATCH] Add deployment scripts

---
 helmcharts/TestApp/build_and_deploy.sh | 18 +++++
 helmcharts/TestApp/deploy_and_wait.sh  | 97 ++++++++++++++++++++++++++
 2 files changed, 115 insertions(+)
 create mode 100644 helmcharts/TestApp/build_and_deploy.sh
 create mode 100644 helmcharts/TestApp/deploy_and_wait.sh

diff --git a/helmcharts/TestApp/build_and_deploy.sh b/helmcharts/TestApp/build_and_deploy.sh
new file mode 100644
index 0000000..119d7d9
--- /dev/null
+++ b/helmcharts/TestApp/build_and_deploy.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+set -euo pipefail
+
+# Change to this directory if you're running outside the directory
+cd "$(dirname "$0")"
+
+# Build the current docker images
+./docker_build.sh $*
+
+# Deploy and wait for success
+CHART="./charts/test-app" \
+RELEASE_NAME="my-test-app-release" \
+NAMESPACE="local" \
+HELM_ARGS="--set test-app-cli.image.tag=$1 \
+  --set test-app-api.image.tag=$1 \
+  --set test-app-service.image.tag=$1 \
+" \
+./deploy_and_wait.sh
\ No newline at end of file
diff --git a/helmcharts/TestApp/deploy_and_wait.sh b/helmcharts/TestApp/deploy_and_wait.sh
new file mode 100644
index 0000000..e770fe9
--- /dev/null
+++ b/helmcharts/TestApp/deploy_and_wait.sh
@@ -0,0 +1,97 @@
+#!/bin/bash
+set -euo pipefail
+
+# Required Variables: 
+[ -z "$CHART" ] && echo "Need to set CHART" && exit 1;
+[ -z "$RELEASE_NAME" ] && echo "Need to set RELEASE_NAME" && exit 1;
+[ -z "$NAMESPACE" ] && echo "Need to set NAMESPACE" && exit 1;
+
+# Set the helm context to the same as the kubectl context
+KUBE_CONTEXT=$(kubectl config current-context)
+
+# Install/upgrade the chart
+helm upgrade --install \
+  $RELEASE_NAME \
+  $CHART \
+  --kube-context "${KUBE_CONTEXT}" \
+  --namespace="$NAMESPACE" \
+  $HELM_ARGS
+
+echo 'LOG: Watching for successful release...'
+
+# Timeout after 6 repeats = 60 seconds
+release_timeout=6
+counter=0
+
+# Loop while $counter < $release_timeout
+while [ $counter -lt $release_timeout ]; do
+    # Fetch a list of release names
+    releases="$(helm ls -q --kube-context "${KUBE_CONTEXT}")"
+
+    # Check if $releases contains RELEASE_NAME
+    if ! echo "${releases}" | grep -qF "${RELEASE_NAME}"; then
+
+        echo "${releases}"
+        echo "LOG: ${RELEASE_NAME} not found. ${counter}/${release_timeout} checks completed; retrying."
+
+        # NOTE: The pre-increment usage. This makes the arithmatic expression
+        # always exit 0. The post-increment form exits non-zero when counter
+        # is zero. More information here: http://wiki.bash-hackers.org/syntax/arith_expr#arithmetic_expressions_and_return_codes
+        ((++counter))
+        sleep 10
+    else
+        # Our release is there, we can stop checking
+        break
+    fi
+done
+
+if [ $counter -eq $release_timeout ]; then
+    echo "LOG: ${RELEASE_NAME} failed to appear." 1>&2
+    exit 1
+fi
+
+
+# Timeout after 20 mins (to leave time for migrations)
+timeout=120
+counter=0
+
+# While $counter < $timeout
+while [ $counter -lt $timeout ]; do
+    
+    # Fetch all pods tagged with the release
+    release_pods="$(kubectl get pods \
+        -l "app.kubernetes.io/instance=${RELEASE_NAME}" \
+        -o 'custom-columns=NAME:.metadata.name,STATUS:.status.phase' \
+        -n "${NAMESPACE}" \
+        --context "${KUBE_CONTEXT}" \
+        --no-headers \
+    )"
+    
+    # If we have any failures, then the release failed
+    if echo "${release_pods}" | grep -qE 'Failed'; then
+      echo "LOG: ${RELEASE_NAME} failed. Check the pod logs."
+      exit 1
+    fi
+
+    # Are any of the pods _not_ in the Running/Succeeded status?
+    if echo "${release_pods}" | grep -qvE 'Running|Succeeded'; then
+
+        echo "${release_pods}" | grep -vE 'Running|Succeeded'
+        echo "${RELEASE_NAME} pods not ready. ${counter}/${timeout} checks completed; retrying."
+
+        # NOTE: The pre-increment usage. This makes the arithmatic expression
+        # always exit 0. The post-increment form exits non-zero when counter
+        # is zero. More information here: http://wiki.bash-hackers.org/syntax/arith_expr#arithmetic_expressions_and_return_codes
+        ((++counter))
+        sleep 10
+    else
+        #All succeeded, we're done!
+        echo "${release_pods}"
+        echo "LOG: All ${RELEASE_NAME} pods running. Done!"
+        exit 0
+    fi
+done
+
+# We timed out
+echo "LOG: Release ${RELEASE_NAME} did not complete in time" 1>&2
+exit 1
\ No newline at end of file