chore: automate updating etc/telegraf.conf and etc/telegraf_windows.conf (#9684)

.circleci/config.yml

@@ -25,6 +25,23 @@ executors:
       GOFLAGS: -p=8
 
 commands:
+  generate-config:
+    parameters:
+      os:
+        type: string
+        default: "linux"
+    steps:
+      - checkout
+      - attach_workspace:
+          at: '/build'
+      - run: ./scripts/generate_config.sh << parameters.os >>
+      - store_artifacts:
+          path: './new-config'
+          destination: 'new-config'
+      - persist_to_workspace:
+          root: './new-config'
+          paths:
+            - '*'
   check-changed-files-or-halt:
     steps:
       - run: ./scripts/check-file-changes.sh
@@ -335,6 +352,24 @@ jobs:
             PR=${CIRCLE_PULL_REQUEST##*/}
             printf -v payload '{ "pullRequestNumber": "%s" }' "$PR"
             curl -X POST "https://182c7jdgog.execute-api.us-east-1.amazonaws.com/prod/shareArtifacts" --data "$payload"
+  generate-config:
+    executor: go-1_17
+    steps:
+      - generate-config
+  generate-config-win:
+    executor:
+        name: win/default
+        shell: bash.exe
+    steps:
+      - generate-config:
+          os: windows
+  update-config:
+    executor: go-1_17
+    steps:
+      - checkout
+      - attach_workspace:
+          at: '/new-config'
+      - run: ./scripts/update_config.sh ${UPDATE_CONFIG_TOKEN}
 
 commonjobs:
   - &test-awaiter
@@ -446,6 +481,28 @@ workflows:
       - *static-package
       - *mipsel-package
       - *mips-package
+      - 'generate-config':
+          requires:
+            - 'amd64-package'
+          filters:
+            branches:
+              only:
+                - master
+      - 'generate-config-win':
+          requires:
+            - 'windows-package'
+          filters:
+            branches:
+              only:
+                - master
+      - 'update-config':
+          requires:
+            - 'generate-config-win'
+            - 'generate-config'
+          filters:
+            branches:
+              only:
+                - master
       - 'share-artifacts':
           requires:
             - 'i386-package'

scripts/generate_config.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+# This script is responsible for generating the Telegraf config found under the `etc` directory.
+# This script is meant to be only ran in within the Circle CI pipeline so that the Tiger Bot can update them automatically.
+# It supports Windows and Linux because the configs are different depending on the OS.
+
+
+os=$1 # windows or linux
+exe_path="/build/extracted" # Path will contain telegraf binary
+config_name="telegraf.conf"
+
+if [ "$os" = "windows" ]; then
+    zip=$(/bin/find ./build/dist -maxdepth 1 -name "*windows_amd64.zip" -print)
+    exe_path="$PWD/build/extracted"
+    unzip "$zip" -d "$exe_path"
+    config_name="telegraf_windows.conf"
+    exe_path=$(/bin/find "$exe_path" -name telegraf.exe -type f -print)
+else
+    tar_path=$(find /build/dist -maxdepth 1 -name "*linux_amd64.tar.gz" -print | grep -v ".*static.*")
+    mkdir "$exe_path"
+    tar --extract --file="$tar_path" --directory "$exe_path"
+    exe_path=$(find "$exe_path" -name telegraf -type f -print | grep ".*usr/bin/.*")
+fi
+
+$exe_path config > $config_name
+
+mkdir ./new-config
+mv $config_name ./new-config

scripts/update_config.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+# This script is responsible for triggering the Tiger Bot endpoint that will create the pull request with the newly generated configs.
+# This script is meant to be only ran in within the Circle CI pipeline.
+
+token=$1
+
+config_path="/new-config"
+
+if [ ! -f "$config_path/telegraf.conf" ]; then
+    echo "$config_path/telegraf.conf does not exist"
+    exit
+fi
+if [ ! -f "$config_path/telegraf_windows.conf" ]; then
+    echo "$config_path/telegraf_windows.conf does not exist"
+    exit
+fi
+
+if cmp -s "$config_path/telegraf.conf" "etc/telegraf.conf" && cmp -s "$config_path/telegraf_windows.conf" "etc/telegraf_windows.conf"; then
+    echo "Both telegraf.conf and telegraf_windows.conf haven't changed"
+fi
+
+curl -H "Authorization: Bearer $token" -X POST "https://182c7jdgog.execute-api.us-east-1.amazonaws.com/prod/updateConfig"