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influx_post.js

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+// Access to influxDB vie HTTP
+
+import axios from 'axios'
+import { logit, logerror } from './logit.js'
+import { DateTime } from 'luxon'
+import { statistics } from'./readdata.js'
+
+
+let INFLUXHOST = process.env.INFLUXHOST || "localhost"
+let INFLUXPORT = process.env.INFLUXPORT || 8086
+let INFLUXTOKEN = process.env.INFLUXTOKEN ||
+    "xuxTjvV7L3Mlr9diG36gMxExP_SbFntuJkp9KYj2_Hnz5U9zbCo7wurdkQqDtKO0Zchr6wbS8kGNW1L5I2V9YQ=="
+let INFLUXDATABUCKET = process.env.INFLUXDATABUCKET || "sensor_data"
+let INFLUXORG = process.env.INFLUXORG || "citysensor"
+
+const INFLUXURL_READ = `http://${INFLUXHOST}:${INFLUXPORT}/api/v2/query?org=${INFLUXORG}`
+const INFLUXURL_WRITE = `http://${INFLUXHOST}:${INFLUXPORT}/api/v2/write?org=${INFLUXORG}&bucket=${INFLUXDATABUCKET}&precision=ms`
+
+export const influxRead = async (query) => {
+    let start = DateTime.now()
+    let data = []
+    try {
+        let ret = await axios({
+            method: 'post',
+            url: INFLUXURL_READ,
+            data: query,
+            headers: {
+                Authorization: `Token ${INFLUXTOKEN}`,
+                Accept: 'application/csv',
+                'Content-type': 'application/vnd.flux'
+            },
+            timeout: 10000,
+        })
+        if (ret.status != 200) {
+            logerror(`doReadfromAPI Status: ${ret.status}`)
+        }
+        data = ret.data
+    } catch (e) {
+        logerror(`doReadfromAPI  ${e}`)
+    }
+    logit(`ReadIn-Time: ${start.diffNow('seconds').toObject().seconds * -1} sec`)
+    return data
+}
+
+
+export const influxWrite = async (data) => {
+    let start = DateTime.now()
+    let ret
+    // logit(INFLUXURL_WRITE)
+    try {
+        ret = await axios({
+            method: 'post',
+            url: INFLUXURL_WRITE,
+            data: data,
+            headers: {
+                Authorization: `Token ${INFLUXTOKEN}`,
+                Accept: 'application/json',
+                'Content-Type': 'text/plain; charset=utf-8'
+            },
+            timeout: 10000,
+        })
+        if (ret.status != 204) {
+            logerror(`doWrite2API Status: ${ret.status}`)
+        }
+    } catch (e) {
+        logerror(`doWrite2API  ${e}`)
+    }
+    let statname = `writeInfluxData[sensor_data]Time`
+    statistics[statname] = DateTime.now().diff(start, ['seconds']).toObject().seconds
+    logit(`Influx-Write-Time: ${start.diffNow('seconds').toObject().seconds * -1} sec`)
+    return ret
+}
+
+/*
+async function main() {
+    let data = `
+    pm,sid=140 P1=12,P2=13
+    pm,sid=142 P1=42,P2=13
+    pm,sid=143 P1=43,P2=13
+    pm,sid=144 P1=44,P2=13
+    thp,sid=141 temperature=23.5,humidity=48,pressure=998
+    `
+    let ret = await influxWrite(data)
+    process.exit()
+
+    let query = `from(bucket:"sensor_data")
+|> range(start: -1mo)
+|> filter(fn: (r) => r._measurement == "pm")
+|> filter(fn: (r) => r.sid == "140")
+`
+    let erg = await influxRead(query)
+    console.log(erg)
+}
+
+
+main().catch(console.error)
+*/