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
45 lines
1.7 KiB
Bash
Executable File
45 lines
1.7 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
# The article's title question: why did application-prod.yaml have no effect?
|
|
#
|
|
# Because an environment variable was set. Profile-specific files beat non-profile files,
|
|
# but the whole config-data group sits BELOW environment variables in the documented
|
|
# precedence list, so a profile file never outranks one.
|
|
set -euo pipefail
|
|
set +m
|
|
cd "$(dirname "$0")/.."
|
|
source scripts/env.sh
|
|
|
|
{
|
|
echo "== does application-prod.yaml win? =="
|
|
echo
|
|
echo "demo.datasource-url is set in application.yaml and again in application-prod.yaml."
|
|
echo
|
|
|
|
echo "--- 1. prod profile active, no environment variable ---"
|
|
echo "\$ java -jar $JAR --spring.profiles.active=prod"
|
|
start_app --spring.profiles.active=prod > /dev/null
|
|
report demo.datasource-url
|
|
echo
|
|
|
|
echo "--- 2. identical, plus one leftover environment variable ---"
|
|
echo "\$ DEMO_DATASOURCE_URL=jdbc:postgresql://leftover:5432/orders \\"
|
|
echo " java -jar $JAR --spring.profiles.active=prod"
|
|
APP_ENV="DEMO_DATASOURCE_URL=jdbc:postgresql://leftover:5432/orders" \
|
|
start_app --spring.profiles.active=prod > /dev/null
|
|
report demo.datasource-url
|
|
echo
|
|
|
|
echo "The profile-specific file is still loaded and still holds its value -- it is listed,"
|
|
echo "and it lost. Config data is item 3 in the documented precedence list; OS environment"
|
|
echo "variables are item 5, and later items win."
|
|
echo
|
|
echo "== the full property-source stack, in order =="
|
|
echo "\$ curl -s localhost:8080/sources"
|
|
curl -s "http://127.0.0.1:${APP_PORT}/sources" | python3 -c '
|
|
import json,sys
|
|
for r in json.load(sys.stdin):
|
|
print(" %2d. %-34s %s" % (r["rank"], r["type"], r["name"][:110]))'
|
|
stop_app
|
|
} > docs/output/02-profile-file-loses.txt 2>&1
|
|
cat docs/output/02-profile-file-loses.txt
|