Claude
d6b76c57db
Thirteen captured transcripts: a listener is a blocking method call, ordering and chaining, SpEL conditions, generic-event erasure, every transaction phase on commit and rollback, what an AFTER_COMMIT listener can write, which exceptions reach the publisher, async listeners on platform and virtual threads, and the annotations behind Spring Modulith's @ApplicationModuleListener. Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01Uu7q8vPeREyT4218EJPzz1
45 lines
2.3 KiB
Bash
Executable File
45 lines
2.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Facts that come from jars rather than from running the scenarios:
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# 12 what Spring Modulith's @ApplicationModuleListener is made of (read with javap)
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# 13 what DataSourceTransactionManager does when a transaction is cleaned up (read with javap)
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set -euo pipefail
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cd "$(dirname "$0")/.."
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mkdir -p output target/facts
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M2=~/.m2/repository
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MODULITH=2.1.1 # newest GA in maven-metadata.xml at the time of writing; 2.2.0-M1 is a milestone
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fetch() { # url, destination: Maven Central rate-limits shared addresses, so retry politely
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for i in 1 2 3 4 5 6; do
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code=$(curl -s -o "$2" -w '%{http_code}' "$1" || true)
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[ "$code" = 200 ] && return 0
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sleep $((i * 10))
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done
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echo "could not fetch $1 (last status $code)" >&2; return 1
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}
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JAR=target/facts/spring-modulith-events-api-$MODULITH.jar
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[ -s "$JAR" ] || fetch "https://repo1.maven.org/maven2/org/springframework/modulith/spring-modulith-events-api/$MODULITH/spring-modulith-events-api-$MODULITH.jar" "$JAR"
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SPRING=7.0.9
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CP="$JAR"
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for a in spring-core spring-context spring-tx spring-aop spring-beans; do
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CP="$CP:$(find "$M2/org/springframework/$a/$SPRING" -name "$a-$SPRING.jar" | head -1)"
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done
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{
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echo "# spring-modulith-events-api $MODULITH: the annotations that @ApplicationModuleListener carries (reflection)"
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echo
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java -cp "$CP" scripts/facts/PrintAnnotations.java org.springframework.modulith.events.ApplicationModuleListener 2>/dev/null \
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| grep -E 'Async|Transactional'
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} > output/12-modulith-application-module-listener.txt
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cat output/12-modulith-application-module-listener.txt
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SPRINGJDBC=$(find "$M2/org/springframework/spring-jdbc/7.0.9" -name 'spring-jdbc-7.0.9.jar' | head -1)
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rm -rf target/facts/jdbc && mkdir -p target/facts/jdbc
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unzip -o -q "$SPRINGJDBC" 'org/springframework/jdbc/datasource/DataSourceTransactionManager.class' -d target/facts/jdbc
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{
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echo "# DataSourceTransactionManager.doCleanupAfterCompletion in spring-jdbc 7.0.9: the calls it makes (javap -c)"
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echo
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javap -c -p -cp target/facts/jdbc org.springframework.jdbc.datasource.DataSourceTransactionManager \
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| awk '/void doCleanupAfterCompletion/,/resetConnectionAfterTransaction/' | grep -E 'invoke' | sed -E 's/^.*\/\/ (Interface)?Method //'
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} > output/13-transaction-cleanup-calls.txt
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cat output/13-transaction-cleanup-calls.txt
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