This is an automated email from the ASF dual-hosted git repository.
piotr pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/iggy.git
The following commit(s) were added to refs/heads/master by this push:
new 4f91d7d89 feat(java): add gradle wrapper with jar file autofetch
(#2659)
4f91d7d89 is described below
commit 4f91d7d894af5abfce38262f73328d68e32eea46
Author: Maciej Modzelewski <[email protected]>
AuthorDate: Mon Feb 2 20:37:56 2026 +0100
feat(java): add gradle wrapper with jar file autofetch (#2659)
---
.github/actions/java-gradle/post-merge/action.yml | 18 +-
.github/actions/java-gradle/pre-merge/action.yml | 10 +-
.../actions/utils/setup-java-with-cache/action.yml | 21 +-
bdd/java/.gitignore | 3 +
bdd/java/Dockerfile | 12 +-
bdd/java/gradle/wrapper/gradle-wrapper.properties | 7 +
bdd/java/gradlew | 297 +++++++++++++++++++++
examples/java/.gitignore | 3 +
examples/java/README.md | 24 +-
.../java/gradle/wrapper/gradle-wrapper.properties | 7 +
examples/java/gradlew | 297 +++++++++++++++++++++
foreign/java/.gitignore | 3 +
foreign/java/BUILD_AND_TEST.md | 36 +--
foreign/java/README.md | 26 +-
.../java/gradle/wrapper/gradle-wrapper.properties | 7 +
foreign/java/gradlew | 297 +++++++++++++++++++++
scripts/run-java-examples-from-readme.sh | 4 +-
17 files changed, 998 insertions(+), 74 deletions(-)
diff --git a/.github/actions/java-gradle/post-merge/action.yml
b/.github/actions/java-gradle/post-merge/action.yml
index b638ddc9d..b09dbba36 100644
--- a/.github/actions/java-gradle/post-merge/action.yml
+++ b/.github/actions/java-gradle/post-merge/action.yml
@@ -30,23 +30,15 @@ inputs:
runs:
using: "composite"
steps:
- - name: Setup Java
- uses: actions/setup-java@v4
- with:
- distribution: "temurin"
- java-version: "17"
-
- - name: Setup Gradle
- uses:
gradle/actions/setup-gradle@af1da67850ed9a4cedd57bfd976089dd991e2582 # v4.0.0
- with:
- gradle-version: '9.2.1'
+ - name: Setup Java with cache
+ uses: ./.github/actions/utils/setup-java-with-cache
- name: Build for publishing
shell: bash
working-directory: foreign/java
run: |
echo "📦 Building Java SDK for publishing..."
- gradle build -x test -x checkstyleMain -x checkstyleTest
+ ./gradlew build -x test -x checkstyleMain -x checkstyleTest
BUILD_EXIT_CODE=$?
# List artifacts only if build succeeded
@@ -73,7 +65,7 @@ runs:
echo ""
# Extract version from build.gradle.kts
- gradle_version=$(gradle -p java-sdk properties -q | grep "version:"
| cut -d: -f2 | tr -d ' ')
+ gradle_version=$(./gradlew -p java-sdk properties -q | grep
"version:" | cut -d: -f2 | tr -d ' ')
echo "Version from gradle: $gradle_version"
echo "Input version: ${{ inputs.version }}"
@@ -107,7 +99,7 @@ runs:
echo ""
# Run the publish task
- gradle build -x test -x checkstyleMain -x checkstyleTest sign publish
+ ./gradlew build -x test -x checkstyleMain -x checkstyleTest sign
publish
PUBLISH_EXIT_CODE=$?
if [ $PUBLISH_EXIT_CODE -eq 0 ]; then
diff --git a/.github/actions/java-gradle/pre-merge/action.yml
b/.github/actions/java-gradle/pre-merge/action.yml
index 7a424f109..74fb781dc 100644
--- a/.github/actions/java-gradle/pre-merge/action.yml
+++ b/.github/actions/java-gradle/pre-merge/action.yml
@@ -37,7 +37,7 @@ runs:
working-directory: foreign/java
run: |
echo "::group::Linting foreign/java"
- gradle check -x test
+ ./gradlew check -x test
echo "::endgroup::"
- name: Lint examples
@@ -46,7 +46,7 @@ runs:
working-directory: examples/java
run: |
echo "::group::Linting examples/java"
- gradle check -x test
+ ./gradlew check -x test
echo "::endgroup::"
- name: Lint BDD
@@ -55,7 +55,7 @@ runs:
working-directory: bdd/java
run: |
echo "::group::Linting bdd/java"
- gradle check -x test
+ ./gradlew check -x test
echo "::endgroup::"
- name: Build
@@ -63,7 +63,7 @@ runs:
if: inputs.task == 'build'
working-directory: foreign/java
run: |
- gradle build -x test -x checkstyleMain -x checkstyleTest -x
spotlessCheck
+ ./gradlew build -x test -x checkstyleMain -x checkstyleTest -x
spotlessCheck
BUILD_EXIT_CODE=$?
# List artifacts only if build succeeded
@@ -94,7 +94,7 @@ runs:
working-directory: foreign/java
env:
USE_EXTERNAL_SERVER: true
- run: gradle test
+ run: ./gradlew test
- name: Copy test reports
if: ${{ !cancelled() && inputs.task == 'test' }}
diff --git a/.github/actions/utils/setup-java-with-cache/action.yml
b/.github/actions/utils/setup-java-with-cache/action.yml
index ac9332a1e..13e709841 100644
--- a/.github/actions/utils/setup-java-with-cache/action.yml
+++ b/.github/actions/utils/setup-java-with-cache/action.yml
@@ -15,11 +15,11 @@
# specific language governing permissions and limitations
# under the License.
-# NOTE: this action sets up the Java toolchain + Gradle with caching,
-# it is a convenience wrapper, so that we can use it in all workflows.
+# NOTE: this action sets up the Java toolchain with optional Gradle caching.
+# Gradle itself is provided via the wrapper (gradlew) in each project.
name: setup-java-with-cache
-description: Setup Java toolchain and Gradle with caching
+description: Setup Java toolchain with optional Gradle caching (uses gradlew
wrapper)
inputs:
java-version:
description: "Java version to use"
@@ -29,10 +29,6 @@ inputs:
description: "Java distribution to use"
required: false
default: "temurin"
- gradle-version:
- description: "Gradle version to use"
- required: false
- default: "9.2.1"
gradle-cache-disabled:
description: "Whether to disable Gradle caching"
required: false
@@ -41,7 +37,7 @@ inputs:
runs:
using: "composite"
steps:
- - name: Setup Java (with cache)
+ - name: Setup Java (with Gradle cache)
if: inputs.gradle-cache-disabled != 'true'
uses: actions/setup-java@v4
with:
@@ -56,15 +52,8 @@ runs:
distribution: ${{ inputs.java-distribution }}
java-version: ${{ inputs.java-version }}
- - name: Setup Gradle
- uses:
gradle/actions/setup-gradle@af1da67850ed9a4cedd57bfd976089dd991e2582 # v4.0.0
- with:
- gradle-version: ${{ inputs.gradle-version }}
- cache-disabled: ${{ inputs.gradle-cache-disabled }}
-
- name: Verify Java installation
run: |
- echo "Java setup complete"
+ echo "Java setup complete (Gradle provided via wrapper)"
java --version
- gradle --version
shell: bash
diff --git a/bdd/java/.gitignore b/bdd/java/.gitignore
index 2bdccb0b4..2d92e8251 100644
--- a/bdd/java/.gitignore
+++ b/bdd/java/.gitignore
@@ -4,3 +4,6 @@
.gradle/
build/
out/
+
+# Gradle wrapper jar (auto-fetched by gradlew script)
+gradle/wrapper/gradle-wrapper.jar
diff --git a/bdd/java/Dockerfile b/bdd/java/Dockerfile
index d3f96a94f..4a135ef53 100644
--- a/bdd/java/Dockerfile
+++ b/bdd/java/Dockerfile
@@ -18,7 +18,7 @@
ARG RUST_VERSION=1.93
FROM rust:${RUST_VERSION}
-FROM gradle:9.2-jdk17
+FROM gradle:9.3.1-jdk17
WORKDIR /workspace
COPY . .
@@ -28,11 +28,11 @@ RUN mkdir -p src/test/resources/features
# Create entrypoint script to copy mounted features at runtime
RUN echo '#!/bin/bash\n\
-set -e\n\
-if [ -d /app/features ]; then\n\
- cp -f /app/features/*.feature
/workspace/bdd/java/src/test/resources/features/ 2>/dev/null || true\n\
-fi\n\
-exec "$@"' > /entrypoint.sh && chmod +x /entrypoint.sh
+ set -e\n\
+ if [ -d /app/features ]; then\n\
+ cp -f /app/features/*.feature
/workspace/bdd/java/src/test/resources/features/ 2>/dev/null || true\n\
+ fi\n\
+ exec "$@"' > /entrypoint.sh && chmod +x /entrypoint.sh
ENTRYPOINT ["/entrypoint.sh"]
CMD ["gradle", "--no-daemon", "test"]
diff --git a/bdd/java/gradle/wrapper/gradle-wrapper.properties
b/bdd/java/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 000000000..37f78a6af
--- /dev/null
+++ b/bdd/java/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.3.1-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/bdd/java/gradlew b/bdd/java/gradlew
new file mode 100755
index 000000000..1149f8ec6
--- /dev/null
+++ b/bdd/java/gradlew
@@ -0,0 +1,297 @@
+#!/bin/sh
+
+#
+# Copyright © 2015 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+# Gradle start up script for POSIX generated by Gradle.
+#
+# Important for running:
+#
+# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+# noncompliant, but you have some other compliant shell such as ksh or
+# bash, then to run this script, type that shell name before the whole
+# command line, like:
+#
+# ksh Gradle
+#
+# Busybox and similar reduced shells will NOT work, because this script
+# requires all of these POSIX shell features:
+# * functions;
+# * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+# «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+# * compound commands having a testable exit status, especially «case»;
+# * various built-in commands including «command», «set», and «ulimit».
+#
+# Important for patching:
+#
+# (2) This script targets any POSIX shell, so it avoids extensions provided
+# by Bash, Ksh, etc; in particular arrays are avoided.
+#
+# The "traditional" practice of packing multiple parameters into a
+# space-separated string is a well documented source of bugs and security
+# problems, so this is (mostly) avoided, by progressively accumulating
+# options in "$@", and eventually passing that to Java.
+#
+# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+# see the in-line comments for details.
+#
+# There are tweaks for specific operating systems such as AIX, CygWin,
+# Darwin, MinGW, and NonStop.
+#
+# (3) This script is generated from the Groovy template
+#
https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+# within the Gradle project.
+#
+# You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+ APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no
leading path
+ [ -h "$app_path" ]
+do
+ ls=$( ls -ld "$app_path" )
+ link=${ls#*' -> '}
+ case $link in #(
+ /*) app_path=$link ;; #(
+ *) app_path=$APP_HOME$link ;;
+ esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set
(https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) ||
exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+ echo "$*"
+} >&2
+
+die () {
+ echo
+ echo "$*"
+ echo
+ exit 1
+} >&2
+
+##############################################################################
+#
+# Gradle Wrapper JAR Auto-Fetch
+#
+# Since the Apache Software Foundation prohibits binary files in source
+# repositories, we download the gradle-wrapper.jar from the official
+# Gradle repository if it's missing.
+#
+##############################################################################
+
+GRADLE_WRAPPER_VERSION=9.3.1
+REQUIRED_WRAPPER_JAR_CHECKSUM="b3a875ddc1f044746e1b1a55f645584505f4a10438c1afea9f15e92a7c42ec13"
+
+for attempt in 1 2 3; do
+ if [ ! -e "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" ]; then
+ if ! curl -s -S --retry 3 -L -o
"$APP_HOME/gradle/wrapper/gradle-wrapper.jar"
"https://raw.githubusercontent.com/gradle/gradle/v$GRADLE_WRAPPER_VERSION/gradle/wrapper/gradle-wrapper.jar";;
then
+ rm -f "$APP_HOME/gradle/wrapper/gradle-wrapper.jar"
+ sleep 5
+ continue
+ fi
+ fi
+
+ if [ -e "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" ]; then
+ if command -v sha256sum >/dev/null 2>&1; then
+ LOCAL_WRAPPER_JAR_CHECKSUM=$(sha256sum
"$APP_HOME/gradle/wrapper/gradle-wrapper.jar" | awk '{print $1}')
+ elif command -v shasum >/dev/null 2>&1; then
+ LOCAL_WRAPPER_JAR_CHECKSUM=$(shasum -a 256
"$APP_HOME/gradle/wrapper/gradle-wrapper.jar" | awk '{print $1}')
+ else
+ warn "Cannot find sha256sum or shasum to verify wrapper JAR."
+ break
+ fi
+
+ if [ "$LOCAL_WRAPPER_JAR_CHECKSUM" != "$REQUIRED_WRAPPER_JAR_CHECKSUM"
]; then
+ rm -f "$APP_HOME/gradle/wrapper/gradle-wrapper.jar"
+ else
+ break
+ fi
+ fi
+done
+
+if [ ! -e "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" ]; then
+ die "ERROR: Failed to download gradle-wrapper.jar after multiple attempts.
+
+Please check your network connection or manually download the file from:
+https://raw.githubusercontent.com/gradle/gradle/v$GRADLE_WRAPPER_VERSION/gradle/wrapper/gradle-wrapper.jar
+
+and place it in $APP_HOME/gradle/wrapper/gradle-wrapper.jar"
+fi
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in #(
+ CYGWIN* ) cygwin=true ;; #(
+ Darwin* ) darwin=true ;; #(
+ MSYS* | MINGW* ) msys=true ;; #(
+ NONSTOP* ) nonstop=true ;;
+esac
+
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD=$JAVA_HOME/jre/sh/java
+ else
+ JAVACMD=$JAVA_HOME/bin/java
+ fi
+ if [ ! -x "$JAVACMD" ] ; then
+ die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+else
+ JAVACMD=java
+ if ! command -v java >/dev/null 2>&1
+ then
+ die "ERROR: JAVA_HOME is not set and no 'java' command could be found
in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+ case $MAX_FD in #(
+ max*)
+ # In POSIX sh, ulimit -H is undefined. That's why the result is
checked to see if it worked.
+ # shellcheck disable=SC2039,SC3045
+ MAX_FD=$( ulimit -H -n ) ||
+ warn "Could not query maximum file descriptor limit"
+ esac
+ case $MAX_FD in #(
+ '' | soft) :;; #(
+ *)
+ # In POSIX sh, ulimit -n is undefined. That's why the result is
checked to see if it worked.
+ # shellcheck disable=SC2039,SC3045
+ ulimit -n "$MAX_FD" ||
+ warn "Could not set maximum file descriptor limit to $MAX_FD"
+ esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+# * args from the command line
+# * the main class name
+# * -classpath
+# * -D...appname settings
+# * --module-path (only if needed)
+# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+ APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+
+ JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+ # Now convert the arguments - kludge to limit ourselves to /bin/sh
+ for arg do
+ if
+ case $arg in #(
+ -*) false ;; # don't mess with
options #(
+ /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX
filepath
+ [ -e "$t" ] ;; #(
+ *) false ;;
+ esac
+ then
+ arg=$( cygpath --path --ignore --mixed "$arg" )
+ fi
+ # Roll the args list around exactly as many times as the number of
+ # args, so each arg winds up back in the position where it started, but
+ # possibly modified.
+ #
+ # NB: a `for` loop captures its iteration list before it begins, so
+ # changing the positional parameters here affects neither the number of
+ # iterations, nor the values presented in `arg`.
+ shift # remove old arg
+ set -- "$@" "$arg" # push replacement arg
+ done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to
pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+# * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to
contain shell fragments,
+# and any embedded shellness will be escaped.
+# * For example: A user cannot expect ${Hostname} to be expanded, as it is
an environment variable and will be
+# treated as '${Hostname}' itself on the command line.
+
+set -- \
+ "-Dorg.gradle.appname=$APP_BASE_NAME" \
+ -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+ "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+ die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes
removed.
+#
+# In Bash we could simply go:
+#
+# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+# set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+ printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+ xargs -n1 |
+ sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+ tr '\n' ' '
+ )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/examples/java/.gitignore b/examples/java/.gitignore
index 2bdccb0b4..2d92e8251 100644
--- a/examples/java/.gitignore
+++ b/examples/java/.gitignore
@@ -4,3 +4,6 @@
.gradle/
build/
out/
+
+# Gradle wrapper jar (auto-fetched by gradlew script)
+gradle/wrapper/gradle-wrapper.jar
diff --git a/examples/java/README.md b/examples/java/README.md
index 41d2644b4..93c1e63b3 100644
--- a/examples/java/README.md
+++ b/examples/java/README.md
@@ -71,8 +71,8 @@ IGGY_HTTP_ENABLED=true IGGY_TCP_ADDRESS=0.0.0.0:8090 cargo
run --bin iggy-server
A good introduction for newcomers to Iggy:
```bash
-gradle runGettingStartedProducer
-gradle runGettingStartedConsumer
+./gradlew runGettingStartedProducer
+./gradlew runGettingStartedConsumer
```
### Message Headers
@@ -80,8 +80,8 @@ gradle runGettingStartedConsumer
Shows metadata management using custom headers:
```bash
-gradle runMessageHeadersProducer
-gradle runMessageHeadersConsumer
+./gradlew runMessageHeadersProducer
+./gradlew runMessageHeadersConsumer
```
Demonstrates using header keys and values for message metadata instead of
payload-based typing, with header-based message routing.
@@ -91,8 +91,8 @@ Demonstrates using header keys and values for message
metadata instead of payloa
JSON envelope pattern for polymorphic message handling:
```bash
-gradle runMessageEnvelopeProducer
-gradle runMessageEnvelopeConsumer
+./gradlew runMessageEnvelopeProducer
+./gradlew runMessageEnvelopeConsumer
```
Uses MessagesGenerator to create OrderCreated, OrderConfirmed, and
OrderRejected messages wrapped in JSON envelopes for type identification.
@@ -104,8 +104,8 @@ Uses MessagesGenerator to create OrderCreated,
OrderConfirmed, and OrderRejected
Complex example demonstrating enterprise-level isolation:
```bash
-gradle runMultiTenantProducer
-gradle runMultiTenantConsumer
+./gradlew runMultiTenantProducer
+./gradlew runMultiTenantConsumer
```
Features multiple tenant setup, user creation with stream-specific
permissions, concurrent producers/consumers across tenants, and security
isolation.
@@ -115,7 +115,7 @@ Features multiple tenant setup, user creation with
stream-specific permissions,
Testing and benchmarking support:
```bash
-gradle runSinkDataProducer
+./gradlew runSinkDataProducer
```
Produces high-throughput data (1000+ messages per batch) with realistic user
records.
@@ -127,7 +127,7 @@ Produces high-throughput data (1000+ messages per batch)
with realistic user rec
Building streams with advanced configuration:
```bash
-gradle runStreamBasic
+./gradlew runStreamBasic
```
Shows how to use the stream builder API to create and configure streams with
custom settings.
@@ -139,11 +139,11 @@ The following example demonstrates how to use the
asynchronous client:
Async producer example:
```bash
-gradle runAsyncProducer
+./gradlew runAsyncProducer
```
Async consumer example:
```bash
-gradle runAsyncConsumerExample
+./gradlew runAsyncConsumerExample
```
diff --git a/examples/java/gradle/wrapper/gradle-wrapper.properties
b/examples/java/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 000000000..37f78a6af
--- /dev/null
+++ b/examples/java/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.3.1-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/examples/java/gradlew b/examples/java/gradlew
new file mode 100755
index 000000000..1149f8ec6
--- /dev/null
+++ b/examples/java/gradlew
@@ -0,0 +1,297 @@
+#!/bin/sh
+
+#
+# Copyright © 2015 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+# Gradle start up script for POSIX generated by Gradle.
+#
+# Important for running:
+#
+# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+# noncompliant, but you have some other compliant shell such as ksh or
+# bash, then to run this script, type that shell name before the whole
+# command line, like:
+#
+# ksh Gradle
+#
+# Busybox and similar reduced shells will NOT work, because this script
+# requires all of these POSIX shell features:
+# * functions;
+# * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+# «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+# * compound commands having a testable exit status, especially «case»;
+# * various built-in commands including «command», «set», and «ulimit».
+#
+# Important for patching:
+#
+# (2) This script targets any POSIX shell, so it avoids extensions provided
+# by Bash, Ksh, etc; in particular arrays are avoided.
+#
+# The "traditional" practice of packing multiple parameters into a
+# space-separated string is a well documented source of bugs and security
+# problems, so this is (mostly) avoided, by progressively accumulating
+# options in "$@", and eventually passing that to Java.
+#
+# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+# see the in-line comments for details.
+#
+# There are tweaks for specific operating systems such as AIX, CygWin,
+# Darwin, MinGW, and NonStop.
+#
+# (3) This script is generated from the Groovy template
+#
https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+# within the Gradle project.
+#
+# You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+ APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no
leading path
+ [ -h "$app_path" ]
+do
+ ls=$( ls -ld "$app_path" )
+ link=${ls#*' -> '}
+ case $link in #(
+ /*) app_path=$link ;; #(
+ *) app_path=$APP_HOME$link ;;
+ esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set
(https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) ||
exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+ echo "$*"
+} >&2
+
+die () {
+ echo
+ echo "$*"
+ echo
+ exit 1
+} >&2
+
+##############################################################################
+#
+# Gradle Wrapper JAR Auto-Fetch
+#
+# Since the Apache Software Foundation prohibits binary files in source
+# repositories, we download the gradle-wrapper.jar from the official
+# Gradle repository if it's missing.
+#
+##############################################################################
+
+GRADLE_WRAPPER_VERSION=9.3.1
+REQUIRED_WRAPPER_JAR_CHECKSUM="b3a875ddc1f044746e1b1a55f645584505f4a10438c1afea9f15e92a7c42ec13"
+
+for attempt in 1 2 3; do
+ if [ ! -e "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" ]; then
+ if ! curl -s -S --retry 3 -L -o
"$APP_HOME/gradle/wrapper/gradle-wrapper.jar"
"https://raw.githubusercontent.com/gradle/gradle/v$GRADLE_WRAPPER_VERSION/gradle/wrapper/gradle-wrapper.jar";;
then
+ rm -f "$APP_HOME/gradle/wrapper/gradle-wrapper.jar"
+ sleep 5
+ continue
+ fi
+ fi
+
+ if [ -e "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" ]; then
+ if command -v sha256sum >/dev/null 2>&1; then
+ LOCAL_WRAPPER_JAR_CHECKSUM=$(sha256sum
"$APP_HOME/gradle/wrapper/gradle-wrapper.jar" | awk '{print $1}')
+ elif command -v shasum >/dev/null 2>&1; then
+ LOCAL_WRAPPER_JAR_CHECKSUM=$(shasum -a 256
"$APP_HOME/gradle/wrapper/gradle-wrapper.jar" | awk '{print $1}')
+ else
+ warn "Cannot find sha256sum or shasum to verify wrapper JAR."
+ break
+ fi
+
+ if [ "$LOCAL_WRAPPER_JAR_CHECKSUM" != "$REQUIRED_WRAPPER_JAR_CHECKSUM"
]; then
+ rm -f "$APP_HOME/gradle/wrapper/gradle-wrapper.jar"
+ else
+ break
+ fi
+ fi
+done
+
+if [ ! -e "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" ]; then
+ die "ERROR: Failed to download gradle-wrapper.jar after multiple attempts.
+
+Please check your network connection or manually download the file from:
+https://raw.githubusercontent.com/gradle/gradle/v$GRADLE_WRAPPER_VERSION/gradle/wrapper/gradle-wrapper.jar
+
+and place it in $APP_HOME/gradle/wrapper/gradle-wrapper.jar"
+fi
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in #(
+ CYGWIN* ) cygwin=true ;; #(
+ Darwin* ) darwin=true ;; #(
+ MSYS* | MINGW* ) msys=true ;; #(
+ NONSTOP* ) nonstop=true ;;
+esac
+
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD=$JAVA_HOME/jre/sh/java
+ else
+ JAVACMD=$JAVA_HOME/bin/java
+ fi
+ if [ ! -x "$JAVACMD" ] ; then
+ die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+else
+ JAVACMD=java
+ if ! command -v java >/dev/null 2>&1
+ then
+ die "ERROR: JAVA_HOME is not set and no 'java' command could be found
in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+ case $MAX_FD in #(
+ max*)
+ # In POSIX sh, ulimit -H is undefined. That's why the result is
checked to see if it worked.
+ # shellcheck disable=SC2039,SC3045
+ MAX_FD=$( ulimit -H -n ) ||
+ warn "Could not query maximum file descriptor limit"
+ esac
+ case $MAX_FD in #(
+ '' | soft) :;; #(
+ *)
+ # In POSIX sh, ulimit -n is undefined. That's why the result is
checked to see if it worked.
+ # shellcheck disable=SC2039,SC3045
+ ulimit -n "$MAX_FD" ||
+ warn "Could not set maximum file descriptor limit to $MAX_FD"
+ esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+# * args from the command line
+# * the main class name
+# * -classpath
+# * -D...appname settings
+# * --module-path (only if needed)
+# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+ APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+
+ JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+ # Now convert the arguments - kludge to limit ourselves to /bin/sh
+ for arg do
+ if
+ case $arg in #(
+ -*) false ;; # don't mess with
options #(
+ /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX
filepath
+ [ -e "$t" ] ;; #(
+ *) false ;;
+ esac
+ then
+ arg=$( cygpath --path --ignore --mixed "$arg" )
+ fi
+ # Roll the args list around exactly as many times as the number of
+ # args, so each arg winds up back in the position where it started, but
+ # possibly modified.
+ #
+ # NB: a `for` loop captures its iteration list before it begins, so
+ # changing the positional parameters here affects neither the number of
+ # iterations, nor the values presented in `arg`.
+ shift # remove old arg
+ set -- "$@" "$arg" # push replacement arg
+ done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to
pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+# * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to
contain shell fragments,
+# and any embedded shellness will be escaped.
+# * For example: A user cannot expect ${Hostname} to be expanded, as it is
an environment variable and will be
+# treated as '${Hostname}' itself on the command line.
+
+set -- \
+ "-Dorg.gradle.appname=$APP_BASE_NAME" \
+ -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+ "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+ die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes
removed.
+#
+# In Bash we could simply go:
+#
+# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+# set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+ printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+ xargs -n1 |
+ sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+ tr '\n' ' '
+ )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/foreign/java/.gitignore b/foreign/java/.gitignore
index 2bdccb0b4..2d92e8251 100644
--- a/foreign/java/.gitignore
+++ b/foreign/java/.gitignore
@@ -4,3 +4,6 @@
.gradle/
build/
out/
+
+# Gradle wrapper jar (auto-fetched by gradlew script)
+gradle/wrapper/gradle-wrapper.jar
diff --git a/foreign/java/BUILD_AND_TEST.md b/foreign/java/BUILD_AND_TEST.md
index fff63a7cd..14c7e4cff 100644
--- a/foreign/java/BUILD_AND_TEST.md
+++ b/foreign/java/BUILD_AND_TEST.md
@@ -11,7 +11,7 @@ polling functionality.
### Required Software
- **Java**: JDK 17 or higher
-- **Gradle**: Version 8.3+ (included via wrapper)
+- **Gradle**: Version 9.3+ (included via wrapper)
- **Iggy Server**: Running instance on localhost:8090
- **Git**: For version control
@@ -31,23 +31,23 @@ READ the README.md and start iggy-server as prescribed
there.
cd iggy/foreign/java/java-sdk
# Clean previous builds
-gradle clean
+./gradlew clean
# Build without running tests
-gradle build -x test
+./gradlew build -x test
# Or build with tests (skip checkstyle)
-gradle build -x checkstyleMain -x checkstyleTest
+./gradlew build -x checkstyleMain -x checkstyleTest
```
### 2. Compile Only
```bash
# Compile main source code
-gradle compileJava
+./gradlew compileJava
# Compile test code
-gradle compileTestJava
+./gradlew compileTestJava
```
## Running Tests
@@ -56,24 +56,24 @@ gradle compileTestJava
```bash
# Run all tests (skip checkstyle)
-gradle test -x checkstyleMain -x checkstyleTest
+./gradlew test -x checkstyleMain -x checkstyleTest
```
### 2. Run Specific Test Class
```bash
# Run AsyncPollMessageTest specifically
-gradle test --tests AsyncPollMessageTest -x checkstyleMain -x checkstyleTest
+./gradlew test --tests AsyncPollMessageTest -x checkstyleMain -x checkstyleTest
# Run with detailed output
-gradle test --tests AsyncPollMessageTest --info -x checkstyleMain -x
checkstyleTest
+./gradlew test --tests AsyncPollMessageTest --info -x checkstyleMain -x
checkstyleTest
```
### 3. Run Test Suite by Package
```bash
# Run all async client tests
-gradle test --tests "org.apache.iggy.client.async.*" -x checkstyleMain -x
checkstyleTest
+./gradlew test --tests "org.apache.iggy.client.async.*" -x checkstyleMain -x
checkstyleTest
```
### 4. View Test Results
@@ -103,7 +103,7 @@ This test validates the async client's polling
functionality and demonstrates im
```bash
# Run with full output
cd iggy/foreign/java/java-sdk
-gradle test --tests AsyncPollMessageTest -x checkstyleMain -x checkstyleTest
--info
+./gradlew test --tests AsyncPollMessageTest -x checkstyleMain -x
checkstyleTest --info
```
Expected output:
@@ -177,7 +177,7 @@ if (consumer == null) {
- For other tests, check network connectivity
3. **Build Failures**
- - Run `../gradlew clean` before building
+ - Run `./gradlew clean` before building
- Ensure Java 17+ is installed
- Check `JAVA_HOME` environment variable
@@ -220,17 +220,17 @@ vim src/main/java/org/apache/iggy/client/async/...
### 2. Compile
```bash
-gradle compileJava
+./gradlew compileJava
```
### 3. Test
```bash
# Run specific test
-gradle test --tests AsyncPollMessageTest -x checkstyleMain -x checkstyleTest
+./gradlew test --tests AsyncPollMessageTest -x checkstyleMain -x checkstyleTest
# Or run all async tests
-gradle test --tests "org.apache.iggy.client.async.*" -x checkstyleMain -x
checkstyleTest
+./gradlew test --tests "org.apache.iggy.client.async.*" -x checkstyleMain -x
checkstyleTest
```
### 4. View Results
@@ -261,19 +261,19 @@ When contributing changes:
1. **Always compile after changes**
```bash
- gradle compileJava compileTestJava
+ ./gradlew compileJava compileTestJava
```
2. **Run relevant tests**
```bash
- gradle test --tests "*Test" -x checkstyleMain -x checkstyleTest
+ ./gradlew test --tests "*Test" -x checkstyleMain -x checkstyleTest
```
3. **Check for warnings**
```bash
- gradle build 2>&1 | grep -i warning
+ ./gradlew build 2>&1 | grep -i warning
```
4. **Clean up test files**
diff --git a/foreign/java/README.md b/foreign/java/README.md
index e70c71c36..24bddb606 100644
--- a/foreign/java/README.md
+++ b/foreign/java/README.md
@@ -199,11 +199,33 @@ See the [`examples`](examples/) module for basic consumer
and producer implement
For Apache Flink integration, see the [Flink Connector
Library](external-processors/iggy-connector-flink/iggy-connector-library/README.md).
+## Building from Source
+
+This project uses the Gradle Wrapper. Due to Apache Software Foundation
policy, the `gradle-wrapper.jar` binary is not checked into the repository.
Instead, the `gradlew` script automatically downloads it on first run.
+
+```bash
+# Build the project
+./gradlew build
+
+# Run tests
+./gradlew test
+```
+
+The wrapper script will:
+
+1. Download `gradle-wrapper.jar` from the official Gradle repository if missing
+2. Verify the SHA256 checksum for security
+3. Execute the requested Gradle command
+
+No manual Gradle installation is required.
+
+**Note:** Only the Unix shell wrapper (`gradlew`) is provided. Windows users
should use WSL, Git Bash, or install Gradle manually.
+
## Contributing
Before opening a pull request:
-1. **Format code:** `gradle spotlessApply`
-2. **Validate build:** `gradle check`
+1. **Format code:** `./gradlew spotlessApply`
+2. **Validate build:** `./gradlew check`
This ensures code style compliance and that all tests and checkstyle
validations pass.
diff --git a/foreign/java/gradle/wrapper/gradle-wrapper.properties
b/foreign/java/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 000000000..37f78a6af
--- /dev/null
+++ b/foreign/java/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.3.1-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/foreign/java/gradlew b/foreign/java/gradlew
new file mode 100755
index 000000000..1149f8ec6
--- /dev/null
+++ b/foreign/java/gradlew
@@ -0,0 +1,297 @@
+#!/bin/sh
+
+#
+# Copyright © 2015 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+# Gradle start up script for POSIX generated by Gradle.
+#
+# Important for running:
+#
+# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+# noncompliant, but you have some other compliant shell such as ksh or
+# bash, then to run this script, type that shell name before the whole
+# command line, like:
+#
+# ksh Gradle
+#
+# Busybox and similar reduced shells will NOT work, because this script
+# requires all of these POSIX shell features:
+# * functions;
+# * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+# «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+# * compound commands having a testable exit status, especially «case»;
+# * various built-in commands including «command», «set», and «ulimit».
+#
+# Important for patching:
+#
+# (2) This script targets any POSIX shell, so it avoids extensions provided
+# by Bash, Ksh, etc; in particular arrays are avoided.
+#
+# The "traditional" practice of packing multiple parameters into a
+# space-separated string is a well documented source of bugs and security
+# problems, so this is (mostly) avoided, by progressively accumulating
+# options in "$@", and eventually passing that to Java.
+#
+# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+# see the in-line comments for details.
+#
+# There are tweaks for specific operating systems such as AIX, CygWin,
+# Darwin, MinGW, and NonStop.
+#
+# (3) This script is generated from the Groovy template
+#
https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+# within the Gradle project.
+#
+# You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+ APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no
leading path
+ [ -h "$app_path" ]
+do
+ ls=$( ls -ld "$app_path" )
+ link=${ls#*' -> '}
+ case $link in #(
+ /*) app_path=$link ;; #(
+ *) app_path=$APP_HOME$link ;;
+ esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set
(https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) ||
exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+ echo "$*"
+} >&2
+
+die () {
+ echo
+ echo "$*"
+ echo
+ exit 1
+} >&2
+
+##############################################################################
+#
+# Gradle Wrapper JAR Auto-Fetch
+#
+# Since the Apache Software Foundation prohibits binary files in source
+# repositories, we download the gradle-wrapper.jar from the official
+# Gradle repository if it's missing.
+#
+##############################################################################
+
+GRADLE_WRAPPER_VERSION=9.3.1
+REQUIRED_WRAPPER_JAR_CHECKSUM="b3a875ddc1f044746e1b1a55f645584505f4a10438c1afea9f15e92a7c42ec13"
+
+for attempt in 1 2 3; do
+ if [ ! -e "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" ]; then
+ if ! curl -s -S --retry 3 -L -o
"$APP_HOME/gradle/wrapper/gradle-wrapper.jar"
"https://raw.githubusercontent.com/gradle/gradle/v$GRADLE_WRAPPER_VERSION/gradle/wrapper/gradle-wrapper.jar";;
then
+ rm -f "$APP_HOME/gradle/wrapper/gradle-wrapper.jar"
+ sleep 5
+ continue
+ fi
+ fi
+
+ if [ -e "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" ]; then
+ if command -v sha256sum >/dev/null 2>&1; then
+ LOCAL_WRAPPER_JAR_CHECKSUM=$(sha256sum
"$APP_HOME/gradle/wrapper/gradle-wrapper.jar" | awk '{print $1}')
+ elif command -v shasum >/dev/null 2>&1; then
+ LOCAL_WRAPPER_JAR_CHECKSUM=$(shasum -a 256
"$APP_HOME/gradle/wrapper/gradle-wrapper.jar" | awk '{print $1}')
+ else
+ warn "Cannot find sha256sum or shasum to verify wrapper JAR."
+ break
+ fi
+
+ if [ "$LOCAL_WRAPPER_JAR_CHECKSUM" != "$REQUIRED_WRAPPER_JAR_CHECKSUM"
]; then
+ rm -f "$APP_HOME/gradle/wrapper/gradle-wrapper.jar"
+ else
+ break
+ fi
+ fi
+done
+
+if [ ! -e "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" ]; then
+ die "ERROR: Failed to download gradle-wrapper.jar after multiple attempts.
+
+Please check your network connection or manually download the file from:
+https://raw.githubusercontent.com/gradle/gradle/v$GRADLE_WRAPPER_VERSION/gradle/wrapper/gradle-wrapper.jar
+
+and place it in $APP_HOME/gradle/wrapper/gradle-wrapper.jar"
+fi
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in #(
+ CYGWIN* ) cygwin=true ;; #(
+ Darwin* ) darwin=true ;; #(
+ MSYS* | MINGW* ) msys=true ;; #(
+ NONSTOP* ) nonstop=true ;;
+esac
+
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD=$JAVA_HOME/jre/sh/java
+ else
+ JAVACMD=$JAVA_HOME/bin/java
+ fi
+ if [ ! -x "$JAVACMD" ] ; then
+ die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+else
+ JAVACMD=java
+ if ! command -v java >/dev/null 2>&1
+ then
+ die "ERROR: JAVA_HOME is not set and no 'java' command could be found
in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+ case $MAX_FD in #(
+ max*)
+ # In POSIX sh, ulimit -H is undefined. That's why the result is
checked to see if it worked.
+ # shellcheck disable=SC2039,SC3045
+ MAX_FD=$( ulimit -H -n ) ||
+ warn "Could not query maximum file descriptor limit"
+ esac
+ case $MAX_FD in #(
+ '' | soft) :;; #(
+ *)
+ # In POSIX sh, ulimit -n is undefined. That's why the result is
checked to see if it worked.
+ # shellcheck disable=SC2039,SC3045
+ ulimit -n "$MAX_FD" ||
+ warn "Could not set maximum file descriptor limit to $MAX_FD"
+ esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+# * args from the command line
+# * the main class name
+# * -classpath
+# * -D...appname settings
+# * --module-path (only if needed)
+# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+ APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+
+ JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+ # Now convert the arguments - kludge to limit ourselves to /bin/sh
+ for arg do
+ if
+ case $arg in #(
+ -*) false ;; # don't mess with
options #(
+ /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX
filepath
+ [ -e "$t" ] ;; #(
+ *) false ;;
+ esac
+ then
+ arg=$( cygpath --path --ignore --mixed "$arg" )
+ fi
+ # Roll the args list around exactly as many times as the number of
+ # args, so each arg winds up back in the position where it started, but
+ # possibly modified.
+ #
+ # NB: a `for` loop captures its iteration list before it begins, so
+ # changing the positional parameters here affects neither the number of
+ # iterations, nor the values presented in `arg`.
+ shift # remove old arg
+ set -- "$@" "$arg" # push replacement arg
+ done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to
pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+# * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to
contain shell fragments,
+# and any embedded shellness will be escaped.
+# * For example: A user cannot expect ${Hostname} to be expanded, as it is
an environment variable and will be
+# treated as '${Hostname}' itself on the command line.
+
+set -- \
+ "-Dorg.gradle.appname=$APP_BASE_NAME" \
+ -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+ "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+ die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes
removed.
+#
+# In Bash we could simply go:
+#
+# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+# set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+ printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+ xargs -n1 |
+ sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+ tr '\n' ' '
+ )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/scripts/run-java-examples-from-readme.sh
b/scripts/run-java-examples-from-readme.sh
index bd91d00e0..9fa768d6f 100755
--- a/scripts/run-java-examples-from-readme.sh
+++ b/scripts/run-java-examples-from-readme.sh
@@ -28,7 +28,7 @@ set -euo pipefail
# If not provided, uses the default target
#
# This script scans examples/java/README.md for commands starting with
-# `gradle` and executes them in order. If any command fails, the script
+# `./gradlew` and executes them in order. If any command fails, the script
# stops immediately and prints the relevant iggy-server logs.
readonly LOG_FILE="iggy-server.log"
@@ -120,7 +120,7 @@ if [ -f "${README_FILE}" ]; then
# Small delay between runs to avoid thrashing the server
sleep 2
- done < <(grep -E '^gradle' "${README_FILE}")
+ done < <(grep -E '^\./gradlew' "${README_FILE}")
else
echo "README file ${README_FILE} not found in examples/java."
fi
