Implementation backend part of plugin in TypeScript #594
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|---|---|---|
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@@ -21,6 +21,6 @@ | |
| }, | ||
| "transpileOnly": true | ||
| }, | ||
| "include": ["../src", "./types"], | ||
| "extends": "@grafana/tsconfig" | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,222 @@ | ||
| // @ts-nocheck | ||
| const datePrefix = "Date"; | ||
| const dateTimePrefix = "DateTime"; | ||
| const dateTime64Prefix = "DateTime64"; | ||
| const timeZonePrefix = "('"; | ||
| const timeZone64Separator = ","; | ||
| const dateTZPrefix = datePrefix + timeZonePrefix; | ||
| const dateTimeTZPrefix = dateTimePrefix + timeZonePrefix; | ||
| const dateTime64TZPrefix = dateTime64Prefix + timeZonePrefix; | ||
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| const dateLayout = "yyyy-MM-dd"; | ||
| const dateTimeLayout = `${dateLayout} HH:mm:ss`; | ||
| const dateTime64Layout3 = `${dateTimeLayout}.SSS`; | ||
| const dateTime64Layout6 = `${dateTimeLayout}.SSSSSS`; | ||
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| const dateTimeTypeRE = /(Date\([^)]+\)|DateTime\([^)]+\)|DateTime64\([^)]+\))/; | ||
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| function parseTimeZone(tz) { | ||
| try { | ||
| return new Intl.DateTimeFormat('en-US', { timeZone: tz }).resolvedOptions().timeZone; | ||
| } catch (err) { | ||
| return "UTC"; | ||
| } | ||
| } | ||
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| function extractTimeZoneNameFromFieldType(fieldType) { | ||
| let tz = ""; | ||
| if (fieldType.startsWith(dateTZPrefix)) { | ||
| tz = fieldType.slice(dateTZPrefix.length + 1, -2); | ||
| } else if (fieldType.startsWith(dateTimeTZPrefix)) { | ||
| tz = fieldType.slice(dateTimeTZPrefix.length + 1, -2); | ||
| } else if (fieldType.startsWith(dateTime64TZPrefix) && fieldType.includes(timeZone64Separator)) { | ||
| tz = fieldType.slice(fieldType.indexOf(timeZone64Separator) + 3, -2); | ||
| } else if (dateTimeTypeRE.test(fieldType)) { | ||
| const matches = fieldType.match(dateTimeTypeRE); | ||
| if (matches.length > 0) { | ||
| return extractTimeZoneNameFromFieldType(matches[0]); | ||
| } | ||
| } | ||
| return tz.trim(); | ||
| } | ||
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| function fetchTimeZoneFromFieldType(fieldType, tzFromServer) { | ||
| const tz = extractTimeZoneNameFromFieldType(fieldType); | ||
| return tz !== "" ? parseTimeZone(tz) : tzFromServer; | ||
| } | ||
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||
| function newDataFieldByType(fieldName, fieldType) { | ||
| if (fieldType.startsWith("LowCardinality")) { | ||
| fieldType = fieldType.slice("LowCardinality(".length, -1); | ||
| } | ||
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| const isNullable = fieldType.includes("Nullable"); | ||
| fieldType = fieldType.replace("Nullable(", "").replace(")", ""); | ||
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| switch (fieldType) { | ||
| case "String": | ||
| case "UUID": | ||
| case "IPv6": | ||
| case "IPv4": | ||
| return newStringField(fieldName, isNullable); | ||
| case "UInt8": | ||
| case "UInt16": | ||
| case "UInt32": | ||
| case "Int8": | ||
| case "Int16": | ||
| case "Int32": | ||
| case "Float32": | ||
| case "Float64": | ||
| return newFloat64Field(fieldName, isNullable); | ||
| case "UInt64": | ||
| if (fieldName === "t" && !isNullable) { | ||
| return newTimeField(fieldName, false); | ||
| } | ||
| return isNullable ? [] : []; | ||
| case "Int64": | ||
| return isNullable ? [] : []; | ||
| default: | ||
| if (fieldType.startsWith("Decimal")) { | ||
| return newFloat64Field(fieldName, isNullable); | ||
| } else if (fieldType.startsWith("FixedString") || fieldType.startsWith("Enum")) { | ||
| return newStringField(fieldName, isNullable); | ||
| } else if (fieldType.startsWith(dateTime64Prefix) || fieldType.startsWith(dateTimePrefix) || fieldType.startsWith(datePrefix)) { | ||
| return newTimeField(fieldName, isNullable); | ||
| } else { | ||
| return newStringField(fieldName, isNullable); | ||
| } | ||
| } | ||
| } | ||
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| function newTimeField(fieldName, isNullable) { | ||
| return isNullable ? [] : []; | ||
| } | ||
|
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| function newFloat64Field(fieldName, isNullable) { | ||
| return isNullable ? [] : []; | ||
| } | ||
|
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| function newStringField(fieldName, isNullable) { | ||
| return isNullable ? [] : []; | ||
| } | ||
|
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| function parseFloatValue(value, isNullable) { | ||
| if (value != null) { | ||
| const floatValue = parseFloat(value); | ||
| return isNullable ? floatValue : floatValue; | ||
| } | ||
| return isNullable ? null : 0.0; | ||
| } | ||
|
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| function parseStringValue(value, isNullable) { | ||
| if (value != null) { | ||
| const stringValue = String(value); | ||
| return isNullable ? stringValue : stringValue; | ||
| } | ||
| return isNullable ? null : ""; | ||
| } | ||
|
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| function parseMapValue(value, isNullable) { | ||
| if (value instanceof Object) { | ||
| try { | ||
| return JSON.stringify(value); | ||
| } catch (err) { | ||
| return null; | ||
| } | ||
| } | ||
| return isNullable ? null : ""; | ||
| } | ||
|
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| function parseUInt64Value(value, isNullable) { | ||
| if (value != null) { | ||
| const uint64Value = BigInt(value); | ||
| return isNullable ? uint64Value : uint64Value; | ||
| } | ||
| return isNullable ? null : BigInt(0); | ||
| } | ||
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| function parseInt64Value(value, isNullable) { | ||
| if (value != null) { | ||
| const int64Value = BigInt(value); | ||
| return isNullable ? int64Value : int64Value; | ||
| } | ||
| return isNullable ? null : BigInt(0); | ||
| } | ||
|
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| function parseTimestampValue(value, isNullable) { | ||
| if (value != null) { | ||
| const intValue = BigInt(value); | ||
| const timeValue = new Date(Number(intValue)); | ||
| return isNullable ? timeValue : timeValue; | ||
| } | ||
| return isNullable ? null : new Date(0); | ||
| } | ||
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| function parseDateTimeValue(value, layout, timezone, isNullable) { | ||
| if (value != null) { | ||
| const dateTimeValue = new Date(`${value} ${timezone}`); | ||
| return isNullable ? dateTimeValue : dateTimeValue; | ||
| } | ||
| return isNullable ? null : new Date(0); | ||
| } | ||
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| export const parseValue = (fieldName, fieldType, tz, value, isNullable) => { | ||
| if (fieldType.startsWith("Nullable")) { | ||
| return parseValue(fieldName, fieldType.slice("Nullable(".length, -1), tz, value, true); | ||
| } else if (fieldType.startsWith("LowCardinality")) { | ||
| return parseValue(fieldName, fieldType.slice("LowCardinality(".length, -1), tz, value, isNullable); | ||
| } else if (fieldType.startsWith("Map(") && fieldType.endsWith(")")) { | ||
| return parseMapValue(value, isNullable); | ||
| } else { | ||
| switch (fieldType) { | ||
| case "String": | ||
| case "UUID": | ||
| case "IPv4": | ||
| case "IPv6": | ||
| return parseStringValue(value, isNullable); | ||
| case "UInt8": | ||
| case "UInt16": | ||
| case "UInt32": | ||
| case "Int8": | ||
| case "Int16": | ||
| case "Int32": | ||
| case "Float32": | ||
| case "Float64": | ||
| return parseFloatValue(value, isNullable); | ||
| case "UInt64": | ||
| if (fieldName === "t") { | ||
| return parseTimestampValue(value, isNullable); | ||
| } | ||
| return parseUInt64Value(value, isNullable); | ||
| case "Int64": | ||
| if (fieldName === "t") { | ||
| return parseTimestampValue(value, isNullable); | ||
| } | ||
| return parseInt64Value(value, isNullable); | ||
| default: | ||
| if (fieldType.startsWith("Decimal")) { | ||
| return parseFloatValue(value, isNullable); | ||
| } else if (fieldType.startsWith("FixedString") || fieldType.startsWith("Enum")) { | ||
| return parseStringValue(value, isNullable); | ||
| } else if (fieldType.startsWith(dateTime64Prefix) && fieldType.includes("3")) { | ||
| return parseDateTimeValue(value, dateTime64Layout3, tz, isNullable); | ||
| } else if (fieldType.startsWith(dateTime64Prefix) && fieldType.includes("6")) { | ||
| return parseDateTimeValue(value, dateTime64Layout6, tz, isNullable); | ||
| } else if (fieldType.startsWith(dateTimePrefix)) { | ||
| return parseDateTimeValue(value, dateTimeLayout, tz, isNullable); | ||
| } else if (fieldType.startsWith(datePrefix)) { | ||
| return parseDateTimeValue(value, dateLayout, tz, isNullable); | ||
| } else { | ||
| console.warn(`Value [${value}] has compound type [${fieldType}] and will be returned as string`); | ||
|
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| try { | ||
| const byteValue = JSON.stringify(value); | ||
| return parseStringValue(byteValue, isNullable); | ||
| } catch (err) { | ||
| console.warn(`Unable to append value of unknown type ${typeof value} because of JSON encoding problem: ${err}`); | ||
| return null; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } |
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how to install pkg in system?