feat: migrate project from cookiecutter to copier template

.github/workflows/ci-for-example.yaml

@@ -29,4 +29,4 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-maven-
       - name: Build with Maven
-        run: mvn clean verify -ntp
+        run: mvn clean verify -ntp

.github/workflows/ci-from-template.yaml

@@ -4,7 +4,7 @@ on:
     branches:
       - main
     paths:
-      - '{{cookiecutter.app_name}}/**'
+      - '{{app_name}}/**'
   workflow_dispatch:
 jobs:
   generate-from-template:
@@ -20,14 +20,14 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: '3.x'
-      - name: Install cookiecutter
+      - name: Install copier
         run: |
-          pip install --upgrade pip cookiecutter
-      - name: Generate from default context (cookiecutter.json)
+          pip install --upgrade pip copier
+      - name: Generate from default context (copier)
         run: |
-          # Generate using the config file test-config.yml from the repo root.
-          # Use the repo root as the template directory (.) and overwrite any existing generated output.
-          cookiecutter --no-input --config-file test-config.yml --overwrite-if-exists --output-dir . .
+          # Use the repo root as the template directory and generate into ./cart-service
+          # Use copier.yml as the default data file with --defaults and --force to overwrite any existing generated output.
+          copier copy . . --defaults --force
       - name: Upload generated cart-service as artifact
         uses: actions/upload-artifact@v4
         with:
@@ -59,5 +59,5 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-maven-
       - name: Build with Maven
-        run: git init && mvn clean verify -Dgit-code-format.skip=true -DargLine="--add-exports jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED" -ntp
-        working-directory: ./cart-service
+        run: git init && mvn clean verify -ntp
+        working-directory: ./cart-service

.github/workflows/generate-template.yaml

@@ -66,7 +66,7 @@ jobs:
 
       - name: Copy generated template to {{cookiecutter.app_name}}
         run: |
-          rsync -a --delete --exclude='.git' ./example-template/ ./{{cookiecutter.app_name}}/
+          rsync -a --delete --exclude='.git' ./example-template/ ./{{app_name}}/
 
       - name: Commit and push changes
         id: commit

README.md

@@ -1,10 +1,10 @@
-# Template project for hexagonal-spring-boot-java
+# Template project for hexagonal-spring-boot-java [![Copier](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/copier-org/copier/master/img/badge/badge-grayscale-inverted-border-orange.json)](https://github.com/copier-org/copier)
 
-This is a template project for hexagonal-spring-boot-java. This project is generated using [cookiecutter](https://cookiecutter.readthedocs.io/en).
+This is a template project for hexagonal-spring-boot-java. This project is generated using [copier](https://copier.readthedocs.io/en/stable/) .
 
 ## Pre-requisites
 
-- [cookiecutter](https://cookiecutter.readthedocs.io/en/stable/README.html#installation)
+- [copier](https://copier.readthedocs.io/en/stable/#installation)
 - Jdk 21
 - Maven >3.9.5
 
@@ -22,26 +22,41 @@ flowchart LR
 
 ### example
 
-This directory contains the maven hexagonal-spring-boot-java template project. This will be used to generate template project for cookiecutter. This project is used for the contributors to make their changes and test it locally. 
+This directory contains the maven hexagonal-spring-boot-java template project. This will be used to generate template project for copier. This project is used for the contributors to make their changes and test it locally.
 
-Following are the keywords reserved for the template project and their equivalent replacements in {{cookiecutter.app_name}} project:
+Following are the keywords reserved for the template project and their equivalent replacements in {{app_name}} project:
 
-| Keyword      | Replacement                                 |
-|--------------|---------------------------------------------|
-| Examples     | {{cookiecutter.domain_plural_capitalized}}  |
-| examples     | {{cookiecutter.domain_plural}}              |
-| Example      | {{cookiecutter.domain_capitalized}}         |
-| example      | {{cookiecutter.domain}}                     |
-| packagename  | {{cookiecutter.package_name}}               |
-| artifactName | {{cookiecutter.artifact_id}}                |
-| group-id     | {{cookiecutter.group_id}}                   |
-| EXAMPLES     | {{cookiecutter.domain_plural_uppercase}}    |
-| EXAMPLE      | {{cookiecutter.domain_uppercase}}           |
+| Keyword      | Replacement                   |
+|--------------|-------------------------------|
+| Examples     | {{domain_plural_capitalized}} |
+| examples     | {{domain_plural}}             |
+| Example      | {{domain_capitalized}}        |
+| example      | {{domain}}                    |
+| packagename  | {{package_name}}              |
+| artifactName | {{artifact_id}}               |
+| group-id     | {{group_id}}                  |
+| EXAMPLES     | {{domain_plural_uppercase}}   |
+| EXAMPLE      | {{domain_uppercase}}          |
 
-Refer script [generate-cookiecutter-template-from-example-project.sh](generate-cookiecutter-template-from-example-project.sh) which is used to generate the cookiecutter template project. This script is also being used by [`.github/workflows/ci.yaml`](.github/workflows/ci.yaml) pipeline too.
+Refer script [generate-copier-template-from-example-project.sh](generate-copier-template-from-example-project.sh) which is used to generate the copier template project. This script is also being used by [generate-template.yaml](.github/workflows/generate-template.yaml) pipeline too.
 
-### {{cookiecutter.app_name}}
+### {{app_name}}
 
-> NOTE: DO NOT MODIFY THIS DIRECTORY DIRECTLY
+> [!WARNING]
+> DO NOT MODIFY THIS DIRECTORY DIRECTLY
 
-This directory contains the generated project from `example` project. The project is generated using the script [generate-cookiecutter-template-from-example-project.sh](generate-cookiecutter-template-from-example-project.sh) which is used to generate the cookiecutter template project.
+This directory contains the generated project from `example` project. The project is generated using the script [generate-copier-template-from-example-project.sh](generate-copier-template-from-example-project.sh) which is used to generate the cookiecutter template project.
+
+## Generating a new project
+
+The following command can be used to generate a new project using this template:
+
+```bash
+copier copy . <destination_folder>
+```
+
+Command to generate with default values without prompt:
+
+```bash
+copier copy . . --defaults
+```

copier.yml

@@ -0,0 +1,57 @@
+app_name:
+  type: str
+  help: "Short project name (e.g., myapp)"
+  default: "cart-service"
+
+app_title:
+  type: str
+  help: "Project title"
+  default: "{{ app_name|capitalize }}"
+
+domain:
+  type: str
+  help: "Domain name (e.g., user, order)"
+  default: "cart"
+
+domain_capitalized:
+  type: str
+  help: "Domain name, capitalized"
+  default: "{{ domain|capitalize }}"
+
+domain_uppercase:
+  type: str
+  help: "Domain name, uppercase"
+  default: "{{ domain|upper }}"
+
+domain_plural:
+  type: str
+  help: "Plural form of domain"
+  default: "{% if domain.endswith('y') %}{{ domain.replace('y', '') }}ies{% else %}{{ domain.lower() }}s{% endif %}"
+
+domain_plural_capitalized:
+  type: str
+  help: "Plural domain, capitalized"
+  default: "{{ domain_plural|capitalize }}"
+
+domain_plural_uppercase:
+  type: str
+  help: "Plural domain, uppercase"
+  default: "{{ domain_plural|upper }}"
+
+group_id:
+  type: str
+  help: "Maven groupId"
+  default: "org.{{ domain }}"
+
+artifact_id:
+  type: str
+  help: "Maven artifactId"
+  default: "{{ domain }}"
+
+package_name:
+  type: str
+  help: "Base package name"
+  default: "{{ group_id }}"
+
+_copy_without_render:
+  - .github

generate-copier-template-from-example-project.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+# This script is used to rename files and directories in the example project to that of the cookiecutter template.
+
+# Remove previous example-template directory if it exists
+if [ -d "example-template" ]; then
+  rm -rf "example-template"
+fi
+# Create a new example-template directory and copy the example project into it
+mkdir "example-template"
+rsync -a ./example/ ./example-template/
+cd ./example-template
+
+# sets the locale for all commands run in the current shell session to the "C" locale, which is the default POSIX locale. This makes programs like sed and find treat files as raw bytes, ignoring any character encoding issues. It helps avoid errors like illegal byte sequence when processing files with mixed or unknown encodings.
+export LC_ALL=C
+
+# Detect OS and set sed inline flag
+if [[ "$(uname)" == "Darwin" ]]; then
+  SED_INPLACE=(-i '')
+else
+  SED_INPLACE=(-i)
+fi
+
+find . -type f -exec sed "${SED_INPLACE[@]}" -e s/Examples/{{domain_plural_capitalized}}/g '{}' ';'
+find . -depth -name '*Examples*' -print0|while IFS= read -rd '' f; do mv -i "$f" "$(echo "$f"|sed -E 's/(.*)Examples/\1{{domain_plural_capitalized}}/')"; done
+find . -type f -exec sed "${SED_INPLACE[@]}" -e s/examples/{{domain_plural}}/g '{}' ';'
+find . -depth -name '*examples*' -print0|while IFS= read -rd '' f; do mv -i "$f" "$(echo "$f"|sed -E 's/(.*)examples/\1{{domain_plural}}/')"; done
+find . -type f -exec sed "${SED_INPLACE[@]}" -e s/Example/{{domain_capitalized}}/g '{}' ';'
+find . -depth -name '*Example*' -print0|while IFS= read -rd '' f; do mv -i "$f" "$(echo "$f"|sed -E 's/(.*)Example/\1{{domain_capitalized}}/')"; done
+find . -type f -exec sed "${SED_INPLACE[@]}" -e s/example/{{domain}}/g '{}' ';'
+find . -depth -name '*example*' -print0|while IFS= read -rd '' f; do mv -i "$f" "$(echo "$f"|sed -E 's/(.*)example/\1{{domain}}/')"; done
+find . -type f -exec sed "${SED_INPLACE[@]}" -e s/packagename/{{package_name}}/g '{}' ';'
+find . -depth -name '*packagename*' -print0|while IFS= read -rd '' f; do mv -i "$f" "$(echo "$f"|sed -E 's/(.*)packagename/\1{{package_name}}/')"; done
+find . -type f -exec sed "${SED_INPLACE[@]}" -e s/artifactName/{{artifact_id}}/g '{}' ';'
+find . -type f -exec sed "${SED_INPLACE[@]}" -e s/group-id/{{group_id}}/g '{}' ';'
+## For the following, we need to replace EXAMPLES and EXAMPLE with the domain name
+find . -type f -exec sed "${SED_INPLACE[@]}" -e s/EXAMPLES/{{domain_plural_uppercase}}/g '{}' ';'
+find . -type f -exec sed "${SED_INPLACE[@]}" -e s/EXAMPLE/{{domain_uppercase}}/g '{}' ';'
+
+# Rename files to add .jinja extension
+# Add .jinja extension to files except those under .github
+exts=(xml yml java feature sql yaml)
+for ext in "${exts[@]}"; do
+  find . -type d -name .github -prune -o -type f -name "*.${ext}" -print0 | while IFS= read -r -d '' file; do
+    mv "$file" "$file.jinja"
+  done
+done

rename_dir.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+# Dry-run: show planned renames
+find . -depth -type d -name '{{cookiecutter.*' -print0 | \
+  while IFS= read -r -d '' d; do
+    new="$(dirname "$d")/$(basename "$d" | sed 's/^{{cookiecutter\./{{/')"
+    printf '%s -> %s\n' "$d" "$new"
+  done
+
+## Apply changes: actually rename (run only after verifying dry-run)
+find . -depth -type d -name '{{cookiecutter.*' -print0 | \
+  while IFS= read -r -d '' d; do
+    new="$(dirname "$d")/$(basename "$d" | sed 's/^{{cookiecutter\./{{/')"
+    if [ -e "$new" ]; then
+      printf 'Skipping %s: target exists %s\n' "$d" "$new" >&2
+      continue
+    fi
+    mv -- "$d" "$new" && printf 'Renamed %s -> %s\n' "$d" "$new"
+  done

{{app_name}}/.docker/Dockerfile

@@ -0,0 +1,7 @@
+FROM gcr.io/distroless/java21-debian12
+
+WORKDIR /app
+
+COPY ../../bootstrap/target/{{domain}}-exec.jar .
+
+CMD ["{{domain}}-exec.jar"]

{{cookiecutter.app_name}}/acceptance-test/pom.xml → {{app_name}}/acceptance-test/pom.xml.jinja

@@ -3,32 +3,32 @@
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
-    <groupId>{{cookiecutter.group_id}}</groupId>
-    <artifactId>{{cookiecutter.artifact_id}}-parent</artifactId>
+    <groupId>{{group_id}}</groupId>
+    <artifactId>{{artifact_id}}-parent</artifactId>
     <version>1.0-SNAPSHOT</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
   <artifactId>acceptance-test</artifactId>
   <dependencies>
     <dependency>
-      <groupId>{{cookiecutter.group_id}}</groupId>
+      <groupId>{{group_id}}</groupId>
       <artifactId>bootstrap</artifactId>
     </dependency>
     <!-- Important: DO NOT DELETE the below dependencies though might seem like redundant to that of
     bootstrap but they are required for jacoco and pitest report aggregation -->
     <!-- left adapter -->
     <dependency>
-      <groupId>{{cookiecutter.group_id}}</groupId>
+      <groupId>{{group_id}}</groupId>
       <artifactId>rest-adapter</artifactId>
     </dependency>
     <!-- domain -->
     <dependency>
-      <groupId>{{cookiecutter.group_id}}</groupId>
+      <groupId>{{group_id}}</groupId>
       <artifactId>domain</artifactId>
     </dependency>
     <!-- right adapter -->
     <dependency>
-      <groupId>{{cookiecutter.group_id}}</groupId>
+      <groupId>{{group_id}}</groupId>
       <artifactId>jpa-adapter</artifactId>
     </dependency>
     <!-- Test -->
@@ -69,8 +69,8 @@
         <version>${cukedoctor-maven-plugin.version}</version>
         <configuration>
           <featuresDir>target/cucumber</featuresDir>
-          <outputFileName>{{cookiecutter.domain_capitalized}}</outputFileName>
-          <documentTitle>{{cookiecutter.domain_capitalized}} - Living Documentation</documentTitle>
+          <outputFileName>{{domain_capitalized}}</outputFileName>
+          <documentTitle>{{domain_capitalized}} - Living Documentation</documentTitle>
           <docVersion>${project.version}</docVersion>
           <toc>center</toc>
         </configuration>

{{cookiecutter.app_name}}/acceptance-test/src/test/java/{{cookiecutter.package_name}}/cucumber/RunCucumber{{cookiecutter.domain_capitalized}}Test.java → {{app_name}}/acceptance-test/src/test/java/{{package_name}}/cucumber/RunCucumber{{domain_capitalized}}Test.java.jinja

@@ -1,4 +1,4 @@
-package {{cookiecutter.package_name}}.cucumber;
+package {{package_name}}.cucumber;
 
 import static io.cucumber.junit.platform.engine.Constants.*;
 
@@ -10,12 +10,12 @@
 
 @Suite
 @IncludeEngines("cucumber")
-@SelectClasspathResource("features/{{cookiecutter.domain}}.feature")
+@SelectClasspathResource("features/{{domain}}.feature")
 @ConfigurationParameters({
-  @ConfigurationParameter(key = GLUE_PROPERTY_NAME, value = "{{cookiecutter.package_name}}.cucumber"),
-  @ConfigurationParameter(key = FILTER_TAGS_PROPERTY_NAME, value = "@{{cookiecutter.domain_capitalized}}"),
+  @ConfigurationParameter(key = GLUE_PROPERTY_NAME, value = "{{package_name}}.cucumber"),
+  @ConfigurationParameter(key = FILTER_TAGS_PROPERTY_NAME, value = "@{{domain_capitalized}}"),
   @ConfigurationParameter(key = JUNIT_PLATFORM_NAMING_STRATEGY_PROPERTY_NAME, value = "long"),
   @ConfigurationParameter(key = PLUGIN_PUBLISH_QUIET_PROPERTY_NAME, value = "true"),
   @ConfigurationParameter(key = PLUGIN_PROPERTY_NAME, value = "json:target/cucumber/cucumber.json")
 })
-public class RunCucumber{{cookiecutter.domain_capitalized}}Test {}
+public class RunCucumber{{domain_capitalized}}Test {}