chore: migration for mongod 7.x upgrade

.envrc

@@ -4,6 +4,8 @@ export SNAPCRAFT_BUILD_ENVIRONMENT=multipass
 
 PATH_add ./rocket_craft
 
+if ! test -f .venv_initialized; then pip3 install -r rocket_craft/requirements.txt && touch .venv_initialized; fi
+
 _ROCKETCRAFT_COMPLETE=bash_source rocketcraft > ._rocketcraft_completion.bash
 
 _ROCKETCRAFT_COMPLETE=zsh_source rocketcraft > ._rocketcraft_completion.zsh

.gitignore

@@ -22,3 +22,4 @@ tests/
 
 ._rocketcraft_completion.bash
 ._rocketcraft_completion.zsh
+.venv_initialized

migrations/post_refresh/02-remove-mongod-storage_journal_enabled.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+>/dev/null cat <<CommentEnd
+
+storage:
+  journal:
+    enabled: <true|false>
+
+is no longer a supported config flag; having it breaks mongod startup.
+
+CommentEnd
+
+start() {
+  python3 -c '
+import sys
+
+from ruamel.yaml import YAML
+yaml = YAML()
+# important since mongod.conf is user editable, we want to preserve their comments;
+yaml.preserve_quotes = True
+yaml.indent(mapping=2, sequence=2, offset=0)
+
+mongod_conf = {}
+with open(sys.argv[1], "r") as f:
+  mongod_conf = yaml.load(f)
+
+
+if "storage" in mongod_conf and "journal" in mongod_conf["storage"]:
+  del mongod_conf["storage"]["journal"]
+  if not mongod_conf["storage"]:
+    del mongod_conf["storage"]
+
+with open(sys.argv[1], "w") as f:
+  yaml.dump(mongod_conf, f)
+  ' $SNAP_DATA/mongod.conf
+}

snap/snapcraft.yaml

@@ -137,6 +137,9 @@ parts:
       '*': migrations/
     plugin: dump
     source: ./migrations
+    stage-packages:
+      - python3-ruamel.yaml
+      - python3
   mongodb-libssl-backwards-compat:
     plugin: dump
     source: