Add support for Helmfile

Dockerfile

@@ -1,17 +1,21 @@
-FROM linkyard/alpine-helm:2.16.6
+FROM alpine/helm:2.14.3
 LABEL maintainer "mario.siegenthaler@linkyard.ch"
 
 RUN apk add --update --upgrade --no-cache jq bash curl git gettext libintl
 
 ENV KUBERNETES_VERSION 1.16.9
+ENV HELMFILE_LATEST_VERSION=0.114.0
 RUN curl -L -o /usr/local/bin/kubectl https://storage.googleapis.com/kubernetes-release/release/v${KUBERNETES_VERSION}/bin/linux/amd64/kubectl; \
-  chmod +x /usr/local/bin/kubectl
-
-ADD assets /opt/resource
-RUN chmod +x /opt/resource/*
+  chmod +x /usr/local/bin/kubectl && \
+  curl -L -o /usr/local/bin/helmfile https://github.com/roboll/helmfile/releases/download/v${HELMFILE_LATEST_VERSION}/helmfile_linux_amd64 && \
+  chmod +x /usr/local/bin/helmfile
 
 RUN mkdir -p "$(helm home)/plugins"
 RUN helm plugin install https://github.com/databus23/helm-diff && \
-  helm plugin install https://github.com/rimusz/helm-tiller
+  helm plugin install https://github.com/rimusz/helm-tiller && \
+  helm plugin install https://github.com/fairfaxmedia/helm-git
+
+ADD assets /opt/resource
+RUN chmod +x /opt/resource/*
 
 ENTRYPOINT [ "/bin/bash" ]

README.md

@@ -95,6 +95,19 @@ on the cluster.
 * `wait`: *Optional.* Allows deploy task to sleep for X seconds before continuing to next task. Allows pods to restart and become stable, useful where dependency between pods exists. (Default: 0)
 * `kubeconfig_path`: *Optional.* File containing a kubeconfig. Overrides source configuration for cluster, token, and admin config.
 
+*For Helmfile*
+
+Params are under the `helmfile` key.
+* `enable`: *Optional.* Enable helmfile support. (Default: false)
+* `action`: *Optional.* Helmfile command. (Default: apply)
+* `file`: *Optional.* Helmfile file. (Default: helmfile.yaml)
+* `directory`: *Optional.* The directory name where the helmfile is located. For `helmfile.d` support this is the parent directory. (Default: .)
+* `environment`: *Optional.* Helmfile environment name.
+* `state_values_file`: *Optional.* Helmfile state value file option.
+* `state_values_set`: *Optional.* Helmfile state values set option.
+* `selector`: *Optional.* Helmfile selector option.
+* `env_vars`: *Optional.* Environment variables to be set before executing helmfile command.
+
 ## Example
 
 ### Out
@@ -137,3 +150,16 @@ jobs:
         path: version/image_tag # Read value from version/number
         type: string            # Make sure it's interpreted as a string by Helm (not a number)
 ```
+
+Add to job to use helmfile:
+
+```yaml
+jobs:
+  # ...
+  plan:
+  - put: myapp-helm
+    params:
+      helmfile:
+        enable: true
+        directory: branch # Parent directory containing the helmfile.d
+```

assets/out

@@ -48,10 +48,23 @@ wait=$(jq -r '.params.wait // 0' < $payload)
 check_is_ready=$(jq -r '.params.check_is_ready // "false"' < $payload)
 kubeconfig_namespace=$(jq -r '.source.kubeconfig_namespace // "false"' < $payload)
 
+# helmfile params
+hf_enable=$(jq -r '.params.helmfile.enable // "false"' < $payload)
+hf_action=$(jq -r '.params.helmfile.action // "apply"' < $payload)
+hf_directory=$(jq -r '.params.helmfile.directory // "."' < $payload)
+hf_file=$(jq -r '.params.helmfile.file // "helmfile.yaml"' < $payload)
+hf_environment=$(jq -r '.params.helmfile.environment // ""' < $payload)
+hf_state_values_file=$(jq -r '.params.helmfile.state_values_file // ""' < $payload)
+hf_state_values_set=$(jq -r '.params.helmfile.state_values_set // ""' < $payload)
+hf_selector=$(jq -r '.params.helmfile.selector // ""' < $payload)
+hf_env_vars=$(jq -r '.params.helmfile.env_vars // ""' < $payload)
+
 if [ -z "$chart" ]; then
-  if [[ "$test" == "false" && "$delete" == "false" ]]; then
-    echo "invalid payload (missing chart)"
-    exit 1
+  if [ "$hf_enable" = "false" ]; then
+    if [[ "$test" == "false" && "$delete" == "false" ]]; then
+      echo "invalid payload (missing chart)"
+      exit 1
+    fi
   fi
 fi
 if [ -f "$source/$namespace_file" ]; then
@@ -292,6 +305,66 @@ wait_ready_notice() {
   fi
 }
 
+helmfile_action() {
+  echo "Executing Helmfile function"
+  echo "hf_enable: ${hf_enable}"
+  echo "hf_action: ${hf_action}"
+  echo "hf_directory: ${hf_directory}"
+  echo "hf_file: ${hf_file}"
+  echo "hf_environment: ${hf_environment}"
+  echo "hf_state_values_file: ${hf_state_values_file}"
+  echo "hf_selector: ${hf_selector}"
+  echo "hf_env_vars: ${hf_env_vars}"
+
+  if [ -n "$hf_env_vars" ]; then
+    IFS=' ' read -r -a envvars <<< "${hf_env_vars}"
+    export "${envvars[@]}"
+  fi
+
+  apply_args=()
+
+  if [ -n "$hf_directory" ]; then
+    cd /tmp/build/put/$hf_directory
+  fi
+
+  if [ ! -d "helmfile.d" ]; then
+    if [ -n "$hf_file" ]; then
+      apply_args+=("--file" "$hf_file")
+    fi
+  fi
+
+  if [ -n "$hf_environment" ]; then
+    apply_args+=("--environment" "$hf_environment")
+  fi
+
+  if [ -n "$namespace" ]; then
+    apply_args+=("--namespace" "$namespace")
+  fi
+
+  if [ -n "$hf_state_values_file" ]; then
+    apply_args+=("--state-values-file" "$hf_state_values_file")
+  fi
+
+  if [ -n "$hf_state_values_set" ]; then
+    apply_args+=("--state-values-set" "$hf_state_values_set")
+  fi
+
+  if [ -n "$hf_selector" ]; then
+    apply_args+=("--selector" "$hf_selector")
+  fi
+
+  apply_args+=("$hf_action")
+
+  if [ -n "$values" ]; then
+    apply_args+=("--values" "$values")
+  fi
+
+  apply_args+=("--suppress-secrets")
+
+  echo "Arguments: ${apply_args[@]}"
+
+  helmfile "${apply_args[@]}" | tee $logfile
+}
 
 if [ "$delete" = true ]; then
   helm_delete
@@ -301,12 +374,25 @@ elif [ "$test" = true ]; then
   helm_test
   result="$(jq -n "{version:{release:\"$release\", tested: \"true\"}, metadata: [{name: \"release\", value: \"$release\"}]}")"
   echo "$result" | jq -s add  >&3
+elif [ "$hf_enable" = "true" ]; then
+  helmfile_action
+
+  if [ "$release" = "" ]; then
+    release=$(${helm_bin} ls -qrd --tiller-namespace $tiller_namespace --max 20 | head -1)
+  fi
+  deployed=$(current_deployed "$release")
+  revision=$(echo $deployed | awk '{ print $1 }')
+  chart=$(echo $deployed | awk '{ print $8 }')
+  echo "Deployed revision $revision of $release"
+  wait_ready_notice
+  result="$(jq -n "{version:{release:\"$release\", revision:\"$revision\"}, metadata: [{name: \"release\", value: \"$release\"},{name: \"revision\", value: \"$revision\"},{name: \"chart\", value: \"$chart\"}]}")"
+  echo "$result" | jq -s add  >&3
 else
   echo "Installing $release"
   helm_upgrade
 
   if [ "$release" = "" ]; then
-    release=$(helm ls -qrd --tiller-namespace $tiller_namespace --max 20 | head -1)
+    release=$(${helm_bin} ls -qrd --tiller-namespace $tiller_namespace --max 20 | head -1)
   fi
   deployed=$(current_deployed "$release")
   revision=$(echo $deployed | awk '{ print $1 }')