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More information: https://www.jsdelivr.com/using-sri-with-dynamic-files\n */\n","const si = require(\"systeminformation\");\nconst { json_list_to_external_table } = require(\"@saltcorn/data/plugin-helper\");\n\nconst child_process = require(\"child_process\");\n\nfunction spawn(command, args, spawnOpts = {}) {\n return new Promise((resolve, reject) => {\n let errorData = \"\";\n\n const spawnedProcess = child_process.spawn(command, args, spawnOpts);\n\n let data = \"\";\n\n spawnedProcess.on(\"message\", console.log);\n\n spawnedProcess.stdout.on(\"data\", chunk => {\n\n data += chunk.toString();\n });\n\n spawnedProcess.stderr.on(\"data\", chunk => {\n errorData += chunk.toString();\n });\n\n spawnedProcess.on(\"close\", function (code) {\n if (code > 0) {\n return reject(new Error(`${errorData} (Failed Instruction: ${command} ${args.join(\" \")})`));\n }\n\n resolve(data);\n });\n\n spawnedProcess.on(\"error\", function (err) {\n reject(err);\n });\n });\n}\n\nconst cpu_usage = {\n run: async () => {\n return (await si.currentLoad()).currentLoad;\n },\n isAsync: true,\n description: \"System CPU load\",\n arguments: [],\n};\n\nconst processes = json_list_to_external_table(async () => {\n return (await si.processes()).list;\n}, [\n { name: \"pid\", type: \"Integer\", primary_key: true },\n { name: \"name\", type: \"String\" },\n { name: \"cpu\", type: \"Float\" },\n { name: \"mem\", type: \"Float\" },\n { name: \"user\", type: \"String\" },\n]);\n\nconst journald_log = json_list_to_external_table(\n async ({ where }) => {\n let setSince = false\n let qs = [\"-o\", \"json\"];\n if (where?.unit?.ilike) {\n qs.push(\"-t\"); qs.push(where.unit.ilike);\n } else if (where?.unit) {\n qs.push(\"-t\"); qs.push(where.unit);\n };\n if (where?.hours_ago?.lt) {\n qs.push(\"--since\")\n qs.push(`${where.hours_ago.lt} hours ago`)\n setSince = true\n }\n if (Array.isArray(where?.hours_ago)) {\n for (const wh of where?.hours_ago) {\n if (wh.lt) {\n qs.push(\"--since\")\n qs.push(`${wh.lt} hours ago`)\n setSince = true\n }\n }\n }\n if (!setSince) {\n qs.push(\"--since\")\n qs.push(`1 hour ago`)\n }\n const sout = await spawn(`journalctl`, qs);\n const now = new Date();\n const rows = sout.split(\"\\n\").map((s) => {\n let o\n try {\n o = JSON.parse(s);\n }\n catch (e) { return null }\n const time = new Date(+o.__REALTIME_TIMESTAMP / 1000);\n return {\n realtime_timestamp: o.__REALTIME_TIMESTAMP,\n unit: o.SYSLOG_IDENTIFIER,\n message: o.MESSAGE,\n time,\n hours_ago: Math.abs(now - time) / 36e5,\n };\n }).filter(o => o);\n return rows\n },\n [\n { name: \"realtime_timestamp\", type: \"String\", primary_key: true },\n { name: \"unit\", type: \"String\" },\n { name: \"message\", type: \"String\" },\n { name: \"time\", type: \"Date\" },\n { name: \"hours_ago\", type: \"Float\" },\n ]\n);\n\nconst drive_usage = {\n run: async () => {\n const disks = await si.fsSize();\n let size = 0;\n let used = 0;\n disks.forEach((d) => {\n if (d && d.used && d.size) {\n size += d.size;\n used += d.used;\n }\n });\n return 100 * (used / size);\n },\n isAsync: true,\n arguments: [],\n description: \"System disk occupancy, (%)\",\n};\nconst mem_usage = {\n run: async () => {\n const simem = await si.mem();\n return 100 - 100 * (simem.available / simem.total);\n },\n description: \"System memory occupancy, (%)\",\n isAsync: true,\n arguments: [],\n};\n\nmodule.exports = {\n sc_plugin_api_version: 1,\n functions: { cpu_usage, drive_usage, mem_usage },\n external_tables: { processes, journald_log },\n};\n"]}