Ankur Mhatre
86246dc860
configuration-properties/ @ConfigurationProperties vs @Value on Spring Boot 4.1.1. The relaxed-binding matrix is generated by binding each spelling rather than transcribed, and re-checked against real processes -- the in-process probe was wrong twice before it was right. Records the three findings that came out of it: @Value does get relaxed resolution inside Spring Boot (Boot attaches ConfigurationPropertySources), the configuration processor silently stops generating metadata on JDK 23+ when declared as a plain dependency, and @Valid is not what makes nested constraints run. profiles-and-config/ Precedence, profiles, spring.config.import and config trees. /precedence reports every source holding a property in rank order with file and line, which turns "my profile file had no effect" into a two-line answer. Also pins the counterintuitive one: an imported file outranks the file that imported it. spring-aop/ Designators, proxy types, and aspects that do not fire. One advice per supported designator so the reference table is generated from real matches; all fourteen unsupported designators fed to the parser. Two corrections to the reference documentation: unsupported designators throw UnsupportedPointcutPrimitiveException (extends RuntimeException, not IllegalArgumentException), and spring-boot-starter-aop was renamed to spring-boot-starter-aspectj in Boot 4. 19 contract tests across the three modules, 15 captured transcripts, all regenerated by scripts/run-all.sh. Verified on Spring Boot 4.1.1, Spring Framework 7.0.9, JDK 25.0.4.1. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Gip4srpzMwjgoba6uEfbr5
62 lines
2.7 KiB
Bash
Executable File
62 lines
2.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Shared environment. Point JAVA_HOME at a JDK 25 (or newer) installation.
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: "${JAVA_HOME:?set JAVA_HOME to a JDK 25+ installation}"
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export PATH="$JAVA_HOME/bin:$PATH"
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MVN="${MVN:-mvn}"
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JAR="target/spring-aop-demo-1.0.0.jar"
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APP_MAIN="com.ankurm.aop.AopApplication"
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APP_PORT="${APP_PORT:-8080}"
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# Strip environment noise that is an artefact of the machine, not of Spring:
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# the JVM prints a JAVA_TOOL_OPTIONS banner to stderr on every launch when a proxy
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# truststore is configured, and it would otherwise end up in every committed transcript.
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clean() { grep -v "Picked up JAVA_TOOL_OPTIONS" | grep -v "^OpenJDK 64-Bit Server VM warning"; }
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# Start the demo jar detached, record its PID, and block until it answers.
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# Extra arguments are passed to the application. Environment variables for the run are
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# passed by setting them on the call: `APP_ENV="A=1 B=2" start_app --spring.profiles.active=x`
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start_app() {
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stop_app
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mkdir -p target
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# Deliberately NOT setsid: setsid forks when it is not already a process-group leader,
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# so $! would be the PID of a process that exits immediately and the JVM would survive
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# every later stop_app. A surviving JVM keeps the port, the next scenario fails to bind,
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# and curl answers from the previous scenario -- which reads exactly like the
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# configuration change under test having had no effect. Three wrong findings in this
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# repository came from that before it was tracked down.
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if [ -n "${APP_ENV:-}" ]; then
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# shellcheck disable=SC2086
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env $APP_ENV nohup java -jar "$JAR" "$@" > /tmp/aop-demo.log 2>&1 < /dev/null &
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else
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nohup java -jar "$JAR" "$@" > /tmp/aop-demo.log 2>&1 < /dev/null &
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fi
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echo $! > target/app.pid
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for _ in $(seq 1 60); do
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curl -s -o /dev/null "http://127.0.0.1:${APP_PORT}/aop/proxies" 2>/dev/null && return 0
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kill -0 "$(cat target/app.pid)" 2>/dev/null || { echo "JVM exited during startup:"
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tail -20 /tmp/aop-demo.log; return 1; }
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sleep 1
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done
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echo "application did not answer"; tail -20 /tmp/aop-demo.log; return 1
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}
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# Stop it by recorded PID. Never by pattern: `ps | grep <jar name>` also matches the shell
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# running the script, because the jar name is on that shell's own command line.
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stop_app() {
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if [ -f target/app.pid ]; then
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pid=$(cat target/app.pid)
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if [ -n "$pid" ] && grep -qa "spring-aop-demo" "/proc/$pid/cmdline" 2>/dev/null; then
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kill -9 "$pid" 2>/dev/null || true
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wait "$pid" 2>/dev/null || true # reap, so bash prints no "Killed" notice
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fi
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rm -f target/app.pid
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fi
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for _ in $(seq 1 40); do
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if ! (exec 3<>/dev/tcp/127.0.0.1/"${APP_PORT:-8080}") 2>/dev/null; then break; fi
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sleep 0.25
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done
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exec 3<&- 2>/dev/null || true
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}
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# Print the precedence report for one property, compactly.
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