Protect rsync tmp files from being deleted if two targets build at the same time

CHANGELOG.md

@@ -8,6 +8,10 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
 
 ##### Enhancements
 
+* Protect rsync tmp files from being deleted if two targets sync at the same time  
+  [Justin Martin](https://github.com/justinseanmartin)
+  [#6873](https://github.com/CocoaPods/CocoaPods/pull/6873)
+
 * Include test schemes within library schemes  
   [Dimitris Koutsogiorgas](https://github.com/dnkoutso)
   [#6765](https://github.com/CocoaPods/CocoaPods/issues/6765)

lib/cocoapods/generator/copy_resources_script.rb

@@ -104,6 +104,10 @@ RESOURCES_TO_COPY=${PODS_ROOT}/resources-to-copy-${TARGETNAME}.txt
 
 XCASSET_FILES=()
 
+# This protects against multiple targets copying the same framework dependency at the same time. The solution
+# was originally proposed here: https://lists.samba.org/archive/rsync/2008-February/020158.html
+RSYNC_PROTECT_TMP_FILES=(--filter "P .*.??????")
+
 case "${TARGETED_DEVICE_FAMILY}" in
   1,2)
     TARGET_DEVICE_ARGS="--target-device ipad --target-device iphone"
@@ -150,8 +154,8 @@ EOM
     *.framework)
       echo "mkdir -p ${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}" || true
       mkdir -p "${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
-      echo "rsync --delete -av $RESOURCE_PATH ${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}" || true
-      rsync --delete -av "$RESOURCE_PATH" "${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
+      echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" $RESOURCE_PATH ${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}" || true
+      rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" "$RESOURCE_PATH" "${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
       ;;
     *.xcdatamodel)
       echo "xcrun momc \\"$RESOURCE_PATH\\" \\"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH"`.mom\\"" || true
@@ -180,10 +184,10 @@ EOS
       RSYNC_CALL = <<EOS
 
 mkdir -p "${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"
-rsync --delete -avr --copy-links --no-relative --exclude '*/.svn/*' --files-from="$RESOURCES_TO_COPY" / "${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"
+rsync --delete -avr --copy-links --no-relative "${RSYNC_PROTECT_TMP_FILES[@]}" --exclude '*/.svn/*' --files-from="$RESOURCES_TO_COPY" / "${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"
 if [[ "${ACTION}" == "install" ]] && [[ "${SKIP_INSTALL}" == "NO" ]]; then
   mkdir -p "${INSTALL_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"
-  rsync --delete -avr --copy-links --no-relative --exclude '*/.svn/*' --files-from="$RESOURCES_TO_COPY" / "${INSTALL_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"
+  rsync --delete -avr --copy-links --no-relative "${RSYNC_PROTECT_TMP_FILES[@]}" --exclude '*/.svn/*' --files-from="$RESOURCES_TO_COPY" / "${INSTALL_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"
 fi
 rm -f "$RESOURCES_TO_COPY"
 EOS

lib/cocoapods/generator/embed_frameworks_script.rb

@@ -43,6 +43,10 @@ module Pod
 
           SWIFT_STDLIB_PATH="${DT_TOOLCHAIN_DIR}/usr/lib/swift/${PLATFORM_NAME}"
 
+          # This protects against multiple targets copying the same framework dependency at the same time. The solution
+          # was originally proposed here: https://lists.samba.org/archive/rsync/2008-February/020158.html
+          RSYNC_PROTECT_TMP_FILES=(--filter "P .*.??????")
+
           install_framework()
           {
             if [ -r "${BUILT_PRODUCTS_DIR}/$1" ]; then
@@ -60,9 +64,9 @@ module Pod
                 source="$(readlink "${source}")"
             fi
 
-            # use filter instead of exclude so missing patterns dont' throw errors
-            echo "rsync --delete -av --filter \\"- CVS/\\" --filter \\"- .svn/\\" --filter \\"- .git/\\" --filter \\"- .hg/\\" --filter \\"- Headers\\" --filter \\"- PrivateHeaders\\" --filter \\"- Modules\\" \\"${source}\\" \\"${destination}\\""
-            rsync --delete -av --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${source}" "${destination}"
+            # Use filter instead of exclude so missing patterns don't throw errors.
+            echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter \\"- CVS/\\" --filter \\"- .svn/\\" --filter \\"- .git/\\" --filter \\"- .hg/\\" --filter \\"- Headers\\" --filter \\"- PrivateHeaders\\" --filter \\"- Modules\\" \\"${source}\\" \\"${destination}\\""
+            rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${source}" "${destination}"
 
             local basename
             basename="$(basename -s .framework "$1")"
@@ -95,8 +99,8 @@ module Pod
           install_dsym() {
             local source="$1"
             if [ -r "$source" ]; then
-              echo "rsync --delete -av --filter \\"- CVS/\\" --filter \\"- .svn/\\" --filter \\"- .git/\\" --filter \\"- .hg/\\" --filter \\"- Headers\\" --filter \\"- PrivateHeaders\\" --filter \\"- Modules\\" \\"${source}\\" \\"${DWARF_DSYM_FOLDER_PATH}\\""
-              rsync --delete -av --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${source}" "${DWARF_DSYM_FOLDER_PATH}"
+              echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter \\"- CVS/\\" --filter \\"- .svn/\\" --filter \\"- .git/\\" --filter \\"- .hg/\\" --filter \\"- Headers\\" --filter \\"- PrivateHeaders\\" --filter \\"- Modules\\" \\"${source}\\" \\"${DWARF_DSYM_FOLDER_PATH}\\""
+              rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${source}" "${DWARF_DSYM_FOLDER_PATH}"
             fi
           }
 

cocoapods-integration-specs @ 6b6cbeac

-Subproject commit ab693a837228d3199f0e2d9e19a3ead5760c5905
+Subproject commit 6b6cbeac5bbcba35369bf371b13b7e9e2ddee693