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Java: fixing racing condition in external JAR download.

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Temporary file name with configure process PID used to download
JAR from external repository.  Then file renamed using command 'mv'.

The issue reproduced in clean environment when 2 or more concurrent builds
started.
This commit is contained in:
Max Romanov
2019-12-09 18:17:16 +03:00
parent c2a7e403ef
commit 55a368e505
1 changed files with 6 additions and 3 deletions
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9
auto/modules/java_get_jar
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@@ -8,7 +8,9 @@
# NXT_JAR_LOCAL_REPO=$HOME/.m2/repository/
NXT_JAR_FILE=${NXT_JAR_NAME}-${NXT_JAR_VERSION}.jar
NXT_JAR_LOCAL="${NXT_JAR_LOCAL_REPO}${NXT_JAR_NAMESPACE}${NXT_JAR_NAME}/${NXT_JAR_VERSION}/${NXT_JAR_FILE}"
NXT_JAR_LOCAL_DIR="${NXT_JAR_LOCAL_REPO}${NXT_JAR_NAMESPACE}${NXT_JAR_NAME}/${NXT_JAR_VERSION}"
NXT_JAR_LOCAL="${NXT_JAR_LOCAL_DIR}/${NXT_JAR_FILE}"
NXT_JAR_LOCAL_TMP="${NXT_JAR_LOCAL_DIR}/.${NXT_JAR_FILE}.$$"
NXT_JAR_URL=${NXT_JAR_REPO}${NXT_JAR_NAMESPACE}${NXT_JAR_NAME}/${NXT_JAR_VERSION}/${NXT_JAR_FILE}
if [ ! -f "$NXT_BUILD_DIR/$NXT_JAR_FILE" ]; then
@@ -16,8 +18,9 @@ if [ ! -f "$NXT_BUILD_DIR/$NXT_JAR_FILE" ]; then
$echo "getting remote $NXT_JAR_FILE ... "
$echo "getting remote $NXT_JAR_FILE ..." >> $NXT_AUTOCONF_ERR
mkdir -p "${NXT_JAR_LOCAL_REPO}${NXT_JAR_NAMESPACE}${NXT_JAR_NAME}/${NXT_JAR_VERSION}/"
curl --progress-bar "$NXT_JAR_URL" -o "$NXT_JAR_LOCAL"
mkdir -p "${NXT_JAR_LOCAL_DIR}"
curl --progress-bar "$NXT_JAR_URL" -o "$NXT_JAR_LOCAL_TMP"
mv "$NXT_JAR_LOCAL_TMP" "$NXT_JAR_LOCAL"
else
$echo "getting local $NXT_JAR_FILE"
$echo "getting local $NXT_JAR_FILE ..." >> $NXT_AUTOCONF_ERR