make: add Go version linting for Dockerfile and YAML files

Author: ffranr

Makefile

@@ -57,6 +57,8 @@ DOCKER_TOOLS = docker run \
   -v $(shell bash -c "go env GOMODCACHE || (mkdir -p /tmp/go-modcache; echo /tmp/go-modcache)"):/tmp/build/.modcache \
   -v $$(pwd):/build taproot-assets-tools
 
+GO_VERSION = 1.21.0
+
 GREEN := "\\033[0;32m"
 NC := "\\033[0m"
 define print
@@ -251,10 +253,20 @@ fmt: $(GOIMPORTS_BIN)
 	@$(call print, "Formatting source.")
 	gofmt -l -w -s $(GOFILES_NOVENDOR)
 
-lint: docker-tools
+check-go-version-yaml:
+	@$(call print, "Checking for target Go version (v$(GO_VERSION)) in  YAML files (*.yaml, *.yml)")
+	./tools/check-go-version-yaml.sh $(GO_VERSION)
+
+check-go-version-dockerfile:
+	@$(call print, "Checking for target Go version (v$(GO_VERSION)) in Dockerfile files (*Dockerfile)")
+	./tools/check-go-version-dockerfile.sh $(GO_VERSION)
+
+lint-source: docker-tools
 	@$(call print, "Linting source.")
 	$(DOCKER_TOOLS) golangci-lint run -v $(LINT_WORKERS)
 
+lint: lint-source check-go-version-dockerfile check-go-version-yaml
+
 list:
 	@$(call print, "Listing commands.")
 	@$(MAKE) -qp | \

tools/check-go-version-dockerfile.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+# Function to check if the Dockerfile contains only the specified Go version
+check_go_version() {
+    local dockerfile="$1"
+    local required_go_version="$2"
+
+    # Use grep to find lines with 'FROM golang:'
+    local go_lines=$(grep -i '^FROM golang:' "$dockerfile")
+
+    # Check if all lines have the required Go version
+    if echo "$go_lines" | grep -q -v "$required_go_version"; then
+        echo "Error: $dockerfile does not use Go version $required_go_version exclusively."
+        exit 1
+    else
+        echo "$dockerfile is using Go version $required_go_version."
+    fi
+}
+
+# Check if the target Go version argument is provided
+if [ $# -eq 0 ]; then
+    echo "Usage: $0 <target_go_version>"
+    exit 1
+fi
+
+target_go_version="$1"
+
+# Search for Dockerfiles in the current directory and its subdirectories
+dockerfiles=$(find . -type f -name "*.Dockerfile" -o -name "Dockerfile")
+
+# Check each Dockerfile
+for file in $dockerfiles; do
+    check_go_version "$file" "$target_go_version"
+done
+
+echo "All Dockerfiles pass the Go version check for Go version $target_go_version."

tools/check-go-version-yaml.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+
+# Function to check if the YAML file contains the specified Go version after 'GO_VERSION:'
+check_go_version() {
+    local yamlfile="$1"
+    local required_go_version="$2"
+
+    # Use grep to find lines with 'GO_VERSION:'
+    local go_lines=$(grep -i 'GO_VERSION:' "$yamlfile" || true)  # Ignore grep exit status
+
+    # Check if any lines specify the Go version
+    if [ -n "$go_lines" ]; then
+        # Extract the Go version from the file's lines. Example matching strings:
+        # GO_VERSION: "1.21.0"
+        # GO_VERSION: '1.21.0'
+        # GO_VERSION: 1.21.0
+        # GO_VERSION:1.21.0
+        #   GO_VERSION:1.21.0
+        local extracted_go_version=$(echo "$go_lines" | sed -n 's/^[[:space:]]*GO_VERSION:[[:space:]]*\(['\''"]\?\)\?\([0-9]\+\.[0-9]\+\.[0-9]\+\)\(['\''"]\?\)\?/\2/p')
+
+        # Check if the extracted Go version matches the required version
+        if [ "$extracted_go_version" != "$required_go_version" ]; then
+            echo "Error: $yamlfile specifies Go version '$extracted_go_version', but not version '$required_go_version'."
+            exit 1
+        else
+            echo "$yamlfile specifies Go version $required_go_version."
+        fi
+    fi
+}
+
+# Check if the target Go version argument is provided
+if [ $# -eq 0 ]; then
+    echo "Usage: $0 <target_go_version>"
+    exit 1
+fi
+
+target_go_version="$1"
+
+# Search for YAML files in the current directory and its subdirectories
+yaml_files=$(find . -type f -name "*.yaml" -o -name "*.yml")
+
+# Check each YAML file
+for file in $yaml_files; do
+    check_go_version "$file" "$target_go_version"
+done
+
+echo "All YAML files pass the Go version check for Go version $target_go_version."