Persistent Context Modification Warnings

Node-RED
,
1

Hi,

I love the virtual switches to expose some config custom logic, e.g. selecting if my auto AC Ignore logic to connect when ESS demands it is active.

To use it, I needed to active a persistent context store. All good and well, but the official procedure results in the scary red modified warnings. I know one day I will need support on something entirely unrelated and the conversation will demand I undo whatever caused the modified flag.

I feel like a persistent context store is a pretty standard and innocuous feature. Could I request this be part of the standard Node-RED image’s config?

I usually create a memory only context store as the default, and a file system as an option on all other Node-RED instances.

Regards,
Deon

3

Use the above to make a file that can store the context permanently without causing the red issue, it is allowed with no problems. 1st inject to make the file, 2nd to check it is there.

4

Your cut and paste has errors and special characters in it.
I proper copy from the export option in nodered should render fine when tagged with the flows markup and display via mermaid.

5

How do I paste part of a flow like just a group, or selected nodes?

6

Just define it with your mouse then choose export selected, or just this flow.

7 
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\"settings-user.js\"","props":[{"p":"payload"}],"repeat":"","crontab":"","once":false,"onceDelay":"","topic":"","payload":"// settings-user.js for persistent file contextmodule.exports = {  contextStorage: {    default: { module: \"memory\" },    file:    { module: \"localfilesystem\" }  }};","payloadType":"str","x":170,"y":840,"wires":[["44773b671f82c051"]]},{"id":"44773b671f82c051","type":"file","z":"8d5542876c246ef6","d":true,"g":"e99119303f2e614d","name":"to /data/home/nodered/.node-red/settings-user.js","filename":"/data/home/nodered/.node-red/settings-user.js","appendNewline":false,"createDir":false,"overwriteFile":"true","encoding":"utf8","x":490,"y":840,"wires":[["d1a39f9bb57004e6"]]},{"id":"d1a39f9bb57004e6","type":"debug","z":"8d5542876c246ef6","d":true,"g":"e99119303f2e614d","name":"Write 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style='font-size:2.2em;margin-bottom:8px;'>⚠️</div>\n                    <b>Persistence Error</b><br>\n                    Node-RED file context <b>NOT working</b>.<br>\n                    Settings/logs <u>will not survive reboot</u>!<br>\n                    <span style='font-size:0.95em;opacity:0.7;'>Check SD card, storage, or settings-user.js</span>\n                    <br><br>\n                    <button id='acknowledge-persist-fail' style=\"margin-top:6px;background:#fff;color:#b71c1c;padding:8px 16px;font-weight:bold;border:none;border-radius:7px;cursor:pointer;font-size:1em;\">Acknowledge</button>\n                </div>`;\n            document.body.appendChild(modal);\n            window.PERSIST_FAIL_MODAL = modal;\n            document.getElementById('acknowledge-persist-fail').onclick = function(){\n                scope.send({payload:'ack'});\n                modal.remove();\n                window.PERSIST_FAIL_MODAL = null;\n            };\n        }\n    }\n    scope.$watch('msg', function(msg){\n        if(msg && msg.payload===true){\n            showModal(msg);\n        }\n    });\n})(scope);\n</script>","storeOutMessages":false,"fwdInMessages":false,"resendOnRefresh":true,"templateScope":"local","className":"","x":440,"y":1020,"wires":[["fn_acknowledge_modal"]]},{"id":"fn_show_modal","type":"function","z":"8d5542876c246ef6","g":"e99119303f2e614d","name":"Show Modal if Fail","func":"// pass = true means fail; set by health check\n// Only trigger modal if flag is set and not acknowledged\nif(msg.pass===false || msg.pass===undefined){\n    var fail = flow.get('PERSIST_FAIL', 'file');\n    if(fail){\n        msg.payload = true; // triggers modal\n        return msg;\n    }\n}\nreturn null;","outputs":1,"timeout":"","noerr":0,"initialize":"","finalize":"","libs":[],"x":210,"y":1020,"wires":[["mod_persist_fail","105b2f270ed429e5"]]},{"id":"fn_set_fail_flag","type":"function","z":"8d5542876c246ef6","g":"e99119303f2e614d","name":"Set Fail Flag on 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null;","outputs":1,"timeout":"","noerr":0,"initialize":"","finalize":"","libs":[],"x":680,"y":1020,"wires":[[]]},{"id":"d379ad022c393034","type":"inject","z":"8d5542876c246ef6","g":"e99119303f2e614d","name":"fail","props":[{"p":"payload"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"true","payloadType":"bool","x":210,"y":1080,"wires":[["mod_persist_fail","105b2f270ed429e5"]]},{"id":"105b2f270ed429e5","type":"ui_template","z":"8d5542876c246ef6","g":"e99119303f2e614d","group":"2ce15f4144b5de0a","name":"Persistence Fail Modal","order":0,"width":"0","height":"0","format":"<script>\n(function(scope){\n    function showModal(msg) {\n        if (!window.PERSIST_FAIL_MODAL) {\n            var modal = document.createElement('div');\n            modal.id = 'persist-fail-modal';\n            modal.style = 'position:fixed;top:0;left:0;width:100vw;height:100vh;background:rgba(24,10,10,0.92);z-index:99999;display:flex;align-items:center;justify-content:center;';\n            modal.innerHTML = `\n                <div style=\"background:#b71c1c;color:#fff;padding:32px 28px 28px 28px;border-radius:14px;box-shadow:0 4px 30px #000a;width:320px;max-width:90vw;text-align:center;font-size:1.12em;\">\n                    <div style='font-size:2.2em;margin-bottom:8px;'>⚠️</div>\n                    <b>Persistence Error</b><br>\n                    Node-RED file context <b>NOT working</b>.<br>\n                    Settings/logs <u>will not survive reboot</u>!<br>\n                    <span style='font-size:0.95em;opacity:0.7;'>Check SD card, storage, or settings-user.js</span>\n                    <br><br>\n                    <button id='acknowledge-persist-fail' style=\"margin-top:6px;background:#fff;color:#b71c1c;padding:8px 16px;font-weight:bold;border:none;border-radius:7px;cursor:pointer;font-size:1em;\">Acknowledge</button>\n                </div>`;\n            document.body.appendChild(modal);\n            window.PERSIST_FAIL_MODAL = modal;\n            document.getElementById('acknowledge-persist-fail').onclick = function(){\n                scope.send({payload:'ack'});\n                modal.remove();\n                window.PERSIST_FAIL_MODAL = null;\n            };\n        }\n    }\n    scope.$watch('msg', function(msg){\n        if(msg && msg.payload===true){\n            showModal(msg);\n        }\n    });\n})(scope);\n</script>","storeOutMessages":false,"fwdInMessages":false,"resendOnRefresh":true,"templateScope":"local","className":"","x":440,"y":1060,"wires":[["fn_acknowledge_modal"]]},{"id":"bceefcfe39af28d1","type":"inject","z":"8d5542876c246ef6","g":"e99119303f2e614d","name":"pass","props":[{"p":"payload"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"false","payloadType":"bool","x":210,"y":1120,"wires":[["mod_persist_fail","105b2f270ed429e5"]]},{"id":"btn_persist_health","type":"ui_button","z":"8d5542876c246ef6","g":"e99119303f2e614d","name":"Check Persistence Health","group":"uigroup_maint","order":3,"width":"3","height":"1","passthru":false,"label":"Check Persistence Health","tooltip":"Checks if file context is working","color":"#333333","bgcolor":"#D9D9D9","className":"","icon":"verified_user","payload":"","payloadType":"str","topic":"","topicType":"str","x":170,"y":1160,"wires":[["fn_persist_health"]]},{"id":"fn_persist_health","type":"function","z":"8d5542876c246ef6","g":"e99119303f2e614d","name":"Save test value to FILE context","func":"// Write a test value to file context and check after 1 sec\nconst k = '_persist_test';\nconst v = 'OK-' + Math.floor(Math.random()*1e6);\nflow.set(k, v);\nflow.set(k, v, 'file');\nnode.status({fill:'yellow',shape:'dot',text:'Checking...'});\nsetTimeout(function(){\n    var got = flow.get(k,'file');\n    var pass = (got === v);\n    node.status(pass ? {fill:'green',shape:'dot',text:'File context OK'} : {fill:'red',shape:'ring',text:'FAIL'});\n    msg.payload = pass ? `Persistence OK: ${got}` : `FAIL: Got \"${got}\"`;\n    msg.pass = pass;\n    node.send(msg);\n},1000);\nreturn null;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":430,"y":1160,"wires":[["debug_persist_health","074b6241262c30ad"]]},{"id":"debug_persist_health","type":"debug","z":"8d5542876c246ef6","g":"e99119303f2e614d","name":"Persistence Health Result","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","x":710,"y":1160,"wires":[]},{"id":"074b6241262c30ad","type":"ui_toast","z":"8d5542876c246ef6","g":"e99119303f2e614d","position":"top right","displayTime":"5","highlight":"","sendall":true,"outputs":0,"ok":"OK","cancel":"","raw":false,"className":"","topic":"payload","name":"","x":710,"y":1200,"wires":[]},{"id":"btn_context_master","type":"ui_button","z":"8d5542876c246ef6","g":"e99119303f2e614d","name":"Clear Context Data","group":"uigroup_maint","order":4,"width":"3","height":"1","passthru":false,"label":"Clear Context 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class=\"md-raised md-primary\"\n                style=\"margin:7px auto; width:90%; border-radius:14px; height:40px; min-height:40px; position:relative; overflow:hidden; text-align:center;\"\n                ng-click=\"choose('${b.id}')\">\n                <span style=\"display:block; width:100%; height:100%; text-align:center; line-height:40px; position:relative; pointer-events:none;\">\n                    <md-icon class=\"material-icons\"\n                        style=\"position:absolute; left:14px; top:50%; transform:translateY(-50%); line-height:1;\">\n                        ${icon}\n                    </md-icon>\n                    <span style=\"display:inline-block; vertical-align:middle; line-height:normal; font-size:13px; font-weight:500;\">\n                        ${b.label}\n                    </span>\n                </span>\n            </md-button>`;\n        }\n\n        var ramHeader = '<div style=\"width:100%; text-align:center; font-size:14px; font-weight:600; color:#8cd7ff; margin-top:10px; margin-bottom:4px;\">RAM MEMORY</div>';\n        var persistentHeader = '<div style=\"width:100%; text-align:center; font-size:14px; font-weight:600; color:#ffda8c; margin-top:10px; margin-bottom:4px;\">FILE MEMORY</div>';\n        var ramButtons = makeButton(msg.buttons[0]) + makeButton(msg.buttons[1]);\n        var persistentButtons = makeButton(msg.buttons[2]) + makeButton(msg.buttons[3]) + makeButton(msg.buttons[4]);\n        var divider = '<div style=\"width:90%; margin:9px auto; border-top:2px solid #666;\"></div>';\n        var cancelButton =\n            `<md-button class=\"md-raised md-warn\"\n                style=\"margin:12px auto 6px auto; width:90%; height:40px; min-height:40px; border-radius:14px; position:relative; overflow:hidden; text-align:center;\"\n                ng-click=\"cancel()\">\n                <span style=\"display:block; width:100%; height:100%; text-align:center; line-height:40px; position:relative; pointer-events:none;\">\n                    <md-icon class=\"material-icons\" style=\"position:absolute; left:14px; top:50%; transform:translateY(-50%); line-height:1;\">cancel</md-icon>\n                    <span style=\"display:inline-block; vertical-align:middle; line-height:normal; font-size:13px; font-weight:500;\">CANCEL</span>\n                </span>\n            </md-button>`;\n\n        // Define modal dialog\n        var dialog = {\n            template: `\n                <md-dialog aria-label=\"Clear Context\"\n                    style=\"min-width:330px; max-width:370px; padding:0; border-radius:12px; overflow:hidden; max-height:90vh;\">\n                  <md-dialog-content\n                       style=\"padding:16px 16px 6px 16px; font-size:17px; font-weight:600; display:flex; justify-content:center; text-align:center; color:#fff;\">\n                       ${(msg.payload || \"Choose what to clear:\")}\n                  </md-dialog-content>\n                  <md-dialog-actions layout=\"column\" layout-align=\"center center\"\n                       style=\"padding-bottom:10px; max-height:none; overflow:hidden;\">\n                       ${ramHeader}\n                       ${ramButtons}\n                       ${divider}\n                       ${persistentHeader}\n                       ${persistentButtons}\n                       ${cancelButton}\n                  </md-dialog-actions>\n                </md-dialog>`,\n            controller: function($scope, $mdDialog){\n                $scope.choose = function(id){\n                    scope.lastDialogActive = false;\n                    $mdDialog.hide(id);\n                };\n                $scope.cancel = function(){\n                    scope.lastDialogActive = false;\n                    $mdDialog.cancel(\"cancel\");\n                };\n            },\n            clickOutsideToClose: true,\n            multiple: false\n        };\n\n        // Keyboard handling (Enter/Esc)\n        var handler = function(e){\n            if (e.key === \"Enter\"){\n                document.removeEventListener('keydown', handler);\n                scope.lastDialogActive = false;\n                $mdDialog.hide(msg.buttons[0].id);\n            }\n            else if(e.key === \"Escape\"){\n                document.removeEventListener('keydown', handler);\n                scope.lastDialogActive = false;\n                $mdDialog.cancel(\"cancel\");\n            }\n        };\n        document.addEventListener('keydown', handler);\n\n        // Open modal\n        scope.lastDialogActive = true;\n        var inj = angular.element(document.body).injector();\n        var $mdDialog = inj.get('$mdDialog');\n        $mdDialog.show(dialog).then(\n            function(result){ scope.lastDialogActive = false; scope.send({topic:result}); },\n            function(){ scope.lastDialogActive = false; scope.send({topic:\"cancel\"}); }\n        );\n    }\n\n    // Listen for incoming messages\n    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null;","outputs":0,"timeout":"","noerr":0,"initialize":"","finalize":"","libs":[],"x":430,"y":1360,"wires":[]},{"id":"fn_clear_global_all","type":"exec","z":"8d5542876c246ef6","g":"e99119303f2e614d","command":"rm -f /data/home/nodered/.node-red/context/global_*.json","addpay":false,"append":"","useSpawn":"false","timer":"","winHide":false,"name":"Global (RAM + persistent)","x":650,"y":1380,"wires":[[],[],[]]},{"id":"fn_clear_flow_ram","type":"function","z":"8d5542876c246ef6","g":"e99119303f2e614d","name":"Flow (RAM only)","func":"for (let key in flow.keys()) {\n    flow.set(key, undefined);\n}\nreturn null;","outputs":0,"timeout":"","noerr":0,"initialize":"","finalize":"","libs":[],"x":420,"y":1320,"wires":[]},{"id":"fn_clear_flow_all","type":"exec","z":"8d5542876c246ef6","g":"e99119303f2e614d","command":"rm -f /data/home/nodered/.node-red/context/flow_*.json","addpay":false,"append":"","useSpawn":"false","timer":"","winHide":false,"name":"Flow (RAM + 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8

Any questions please ask.

9

To be honest, I think this is far riskier than enabling the file system context store.

Hence my request to Victron, please enable a file context store without screaming “Modified!”

10

This is not modified, anything that node-red can do is not in the root files, node red is limited not to modify the OS. the risks are only with SSH.