FIX (deployments): Use binaries instead of symlinks on PostgreSQL download

Author: RostislavDugin

backend/tools/download_linux.sh

@@ -59,21 +59,27 @@ for version in $versions; do
     version_dir="$POSTGRES_DIR/postgresql-$version"
     mkdir -p "$version_dir/bin"
 
-    # Create symlinks to the version-specific installed binaries
-    # PostgreSQL packages create versioned binaries like pg_dump-13, pg_dump-14, etc.
-    if [ -f "/usr/bin/pg_dump-$version" ]; then
-        ln -sf "/usr/bin/pg_dump-$version" "$version_dir/bin/pg_dump"
-        ln -sf "/usr/bin/pg_dumpall-$version" "$version_dir/bin/pg_dumpall"
-        ln -sf "/usr/bin/psql-$version" "$version_dir/bin/psql"
-        ln -sf "/usr/bin/pg_restore-$version" "$version_dir/bin/pg_restore"
-        ln -sf "/usr/bin/createdb-$version" "$version_dir/bin/createdb"
-        ln -sf "/usr/bin/dropdb-$version" "$version_dir/bin/dropdb"
+    # On Debian/Ubuntu, PostgreSQL binaries are located in /usr/lib/postgresql/{version}/bin/
+    pg_bin_dir="/usr/lib/postgresql/$version/bin"
+    
+    if [ -d "$pg_bin_dir" ] && [ -f "$pg_bin_dir/pg_dump" ]; then
+        # Create symlinks to the version-specific binaries
+        ln -sf "$pg_bin_dir/pg_dump" "$version_dir/bin/pg_dump"
+        ln -sf "$pg_bin_dir/pg_dumpall" "$version_dir/bin/pg_dumpall"
+        ln -sf "$pg_bin_dir/psql" "$version_dir/bin/psql"
+        ln -sf "$pg_bin_dir/pg_restore" "$version_dir/bin/pg_restore"
+        ln -sf "$pg_bin_dir/createdb" "$version_dir/bin/createdb"
+        ln -sf "$pg_bin_dir/dropdb" "$version_dir/bin/dropdb"
 
         echo "PostgreSQL $version client tools installed successfully"
     else
-        echo "Error: PostgreSQL $version versioned binaries not found. Expected /usr/bin/pg_dump-$version"
-        echo "Available pg_dump binaries:"
-        ls -la /usr/bin/pg_dump* 2>/dev/null || echo "No pg_dump binaries found"
+        echo "Error: PostgreSQL $version binaries not found in expected location: $pg_bin_dir"
+        echo "Available PostgreSQL directories:"
+        ls -la /usr/lib/postgresql/ 2>/dev/null || echo "No PostgreSQL directories found in /usr/lib/postgresql/"
+        if [ -d "$pg_bin_dir" ]; then
+            echo "Contents of $pg_bin_dir:"
+            ls -la "$pg_bin_dir" 2>/dev/null || echo "Directory exists but cannot list contents"
+        fi
         exit 1
     fi
     echo
@@ -90,7 +96,7 @@ for version in $versions; do
     if [ -f "$version_dir/bin/pg_dump" ]; then
         echo "  postgresql-$version: $version_dir/bin/"
         # Verify the correct version
-        version_output=$("$version_dir/bin/pg_dump" --version 2>/dev/null | grep -o "pg_dump (PostgreSQL) [0-9]\+")
+        version_output=$("$version_dir/bin/pg_dump" --version 2>/dev/null | grep -o "pg_dump (PostgreSQL) [0-9]\+\.[0-9]\+")
         echo "    Version check: $version_output"
     fi
 done

backend/tools/readme.md

@@ -1,4 +1,4 @@
-This directory is needed only for development.
+This directory is needed only for development and CI\CD.
 
 We have to download and install all the PostgreSQL versions from 13 to 17 locally.
 This is needed so we can call pg_dump, pg_dumpall, etc. on each version of the PostgreSQL database.