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Snap MongoDB Server 3-8 support. Part 1.
Thanks to xet7 !
This commit is contained in:
Lauri Ojansivu
parent
8e71b68dbf
commit
b949357e66
8 changed files with 1035 additions and 1493 deletions
179
snap-src/bin/mongodb-control-new
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179
snap-src/bin/mongodb-control-new
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#!/bin/bash
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# MongoDB Control Script
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# Handles MongoDB server startup with automatic version detection and switching
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# get wekan/mongo settings
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source $SNAP/bin/wekan-read-settings
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if [ "true" == "${DISABLE_MONGODB}" ]; then
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echo "mongodb is disabled. Stop service"
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snapctl stop --disable ${SNAP_NAME}.mongodb
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exit 0
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fi
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# MongoDB Version Detection and Auto-Switching System
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# Detects MongoDB server version from connection attempts and switches to correct binary
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# MongoDB binary paths for different versions
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MONGO3_BIN="/snap/${SNAP_NAME}/current/migratemongo/bin"
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MONGO7_BIN="/snap/${SNAP_NAME}/current/bin"
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MONGO3_LIB="/snap/${SNAP_NAME}/current/migratemongo/lib"
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MONGO7_LIB="/snap/${SNAP_NAME}/current/usr/lib"
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# Version detection log
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VERSION_DETECTION_LOG="${SNAP_COMMON}/mongodb-version-detection.log"
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# Log version detection events
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log_version_detection() {
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echo "$(date): $1" >> "$VERSION_DETECTION_LOG"
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}
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# Detect MongoDB server version by attempting connection
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detect_mongodb_version() {
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local mongo_url="${MONGO_URL:-mongodb://127.0.0.1:27017/wekan}"
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local detected_version=""
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log_version_detection "Starting MongoDB version detection for: $mongo_url"
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# Try to connect with MongoDB 7 first (latest)
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log_version_detection "Attempting connection with MongoDB 7 binary"
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if timeout 10s /snap/${SNAP_NAME}/current/bin/mongosh --quiet --eval "db.runCommand({buildInfo: 1}).version" "$mongo_url" 2>/dev/null | grep -q "7\."; then
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detected_version="7"
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log_version_detection "Detected MongoDB 7.x server"
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elif timeout 10s /snap/${SNAP_NAME}/current/bin/mongosh --quiet --eval "db.runCommand({buildInfo: 1}).version" "$mongo_url" 2>&1 | grep -q "protocol version\|wire protocol"; then
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# Check for wire protocol errors that indicate older version
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local error_output=$(timeout 10s /snap/${SNAP_NAME}/current/bin/mongosh --quiet --eval "db.runCommand({buildInfo: 1}).version" "$mongo_url" 2>&1)
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if echo "$error_output" | grep -q "protocol version 0\|wire protocol version 0"; then
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detected_version="3"
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log_version_detection "Detected MongoDB 3.x server (wire protocol 0)"
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elif echo "$error_output" | grep -q "protocol version 1\|wire protocol version 1"; then
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detected_version="3"
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log_version_detection "Detected MongoDB 3.x server (wire protocol 1)"
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elif echo "$error_output" | grep -q "protocol version 2\|wire protocol version 2"; then
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detected_version="3"
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log_version_detection "Detected MongoDB 3.x server (wire protocol 2)"
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elif echo "$error_output" | grep -q "protocol version 3\|wire protocol version 3"; then
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detected_version="3"
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log_version_detection "Detected MongoDB 3.x server (wire protocol 3)"
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else
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log_version_detection "Unknown wire protocol error: $error_output"
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fi
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else
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log_version_detection "No MongoDB server running or connection failed"
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fi
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echo "$detected_version"
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}
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# Switch to appropriate MongoDB binary based on detected version
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switch_mongodb_binary() {
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local version="$1"
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case "$version" in
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"3")
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log_version_detection "Switching to MongoDB 3.x binary"
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export PATH="${MONGO3_BIN}:${PATH}"
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export LD_LIBRARY_PATH="${MONGO3_LIB}:${MONGO3_LIB}/x86_64-linux-gnu:${LD_LIBRARY_PATH}"
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echo "3" > "${SNAP_COMMON}/mongodb-active-version"
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;;
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"7"|"")
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log_version_detection "Using MongoDB 7.x binary (default)"
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export PATH="${MONGO7_BIN}:${PATH}"
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export LD_LIBRARY_PATH="${MONGO7_LIB}:${LD_LIBRARY_PATH}"
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echo "7" > "${SNAP_COMMON}/mongodb-active-version"
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;;
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*)
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log_version_detection "Unknown version $version, using default MongoDB 7.x"
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export PATH="${MONGO7_BIN}:${PATH}"
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export LD_LIBRARY_PATH="${MONGO7_LIB}:${LD_LIBRARY_PATH}"
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echo "7" > "${SNAP_COMMON}/mongodb-active-version"
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;;
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esac
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}
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# Main version detection and switching logic
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setup_mongodb_version() {
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# Check if we have a cached version
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if [ -f "${SNAP_COMMON}/mongodb-active-version" ]; then
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local cached_version=$(cat "${SNAP_COMMON}/mongodb-active-version")
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log_version_detection "Using cached MongoDB version: $cached_version"
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switch_mongodb_binary "$cached_version"
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return
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fi
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# Detect version and switch
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local detected_version=$(detect_mongodb_version)
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if [ -n "$detected_version" ]; then
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switch_mongodb_binary "$detected_version"
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else
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# Default to MongoDB 7 if detection fails
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log_version_detection "Version detection failed, using default MongoDB 7.x"
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switch_mongodb_binary "7"
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fi
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}
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# Run version detection and setup
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setup_mongodb_version
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# make sure we have set minimum env variables for locale
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if [ -z "${LANG}" ]; then
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export LANG=en_US.UTF-8
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fi
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export LC_ALL=C
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# If CPU does not support AVX, use Qemu that supports AVX.
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# Migratemongo is at https://github.com/wekan/migratemongo
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# and at directory /snap/${SNAP_NAME}/current/migratemongo/avx
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# is bash scripts like mongod, mongosh check avx support and use Qemu if needed.
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export PATH=/snap/${SNAP_NAME}/current/migratemongo/avx:/snap/${SNAP_NAME}/current/usr/bin:/snap/${SNAP_NAME}/current/bin:${PATH}
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export LD_LIBRARY_PATH=/snap/${SNAP_NAME}/current/lib:/snap/${SNAP_NAME}/current/lib/x86_64-linux-gnu:${LD_LIBRARY_PATH}
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# If temporary settings log exists, delete it
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if [ -f ${SNAP_COMMON}/settings.log ]; then
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rm ${SNAP_COMMON}/settings.log
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fi
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# Set MongoDB log destination to snapcommon for log file detection
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export MONGO_LOG_DESTINATION="snapcommon"
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# Set MongoDB data directory
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export MONGO_DATA_DIR="${SNAP_COMMON}/wekan"
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# Create MongoDB data directory if it doesn't exist
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if [ ! -d "$MONGO_DATA_DIR" ]; then
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mkdir -p "$MONGO_DATA_DIR"
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chmod 755 "$MONGO_DATA_DIR"
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fi
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# Set MongoDB log file path
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export MONGO_LOG_FILE="${SNAP_COMMON}/mongodb.log"
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# Start MongoDB with appropriate version
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echo "Starting MongoDB with detected version..."
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log_version_detection "Starting MongoDB server"
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# Get the active version
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ACTIVE_VERSION=$(cat "${SNAP_COMMON}/mongodb-active-version" 2>/dev/null || echo "7")
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if [ "$ACTIVE_VERSION" = "3" ]; then
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echo "Starting MongoDB 3.x server..."
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log_version_detection "Starting MongoDB 3.x server"
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exec /snap/${SNAP_NAME}/current/migratemongo/bin/mongod \
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--dbpath="$MONGO_DATA_DIR" \
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--logpath="$MONGO_LOG_FILE" \
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--logappend \
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--bind_ip=127.0.0.1 \
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--port=27017 \
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--fork
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else
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echo "Starting MongoDB 7.x server..."
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log_version_detection "Starting MongoDB 7.x server"
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exec /snap/${SNAP_NAME}/current/bin/mongod \
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--dbpath="$MONGO_DATA_DIR" \
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--logpath="$MONGO_LOG_FILE" \
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--logappend \
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--bind_ip=127.0.0.1 \
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--port=27017 \
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--fork
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fi
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