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Added PromQL language (#2628)
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‎components.js

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‎components.json

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"title": "Prolog",
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"owner": "Golmote"
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},
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"promql": {
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"title": "PromQL",
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"owner": "arendjr"
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},
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"properties": {
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"title": ".properties",
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"owner": "Golmote"

‎components/prism-promql.js

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// Thanks to: https://github.com/prometheus-community/monaco-promql/blob/master/src/promql/promql.ts
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// As well as: https://kausal.co/blog/slate-prism-add-new-syntax-promql/
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(function (Prism) {
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// PromQL Aggregation Operators
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// (https://prometheus.io/docs/prometheus/latest/querying/operators/#aggregation-operators)
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var aggregations = [
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'sum',
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'min',
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'max',
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'avg',
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'group',
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'stddev',
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'stdvar',
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'count',
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'count_values',
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'bottomk',
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'topk',
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'quantile'
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];
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// PromQL vector matching + the by and without clauses
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// (https://prometheus.io/docs/prometheus/latest/querying/operators/#vector-matching)
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var vectorMatching = [
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'on',
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'ignoring',
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'group_right',
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'group_left',
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'by',
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'without',
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];
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// PromQL offset modifier
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// (https://prometheus.io/docs/prometheus/latest/querying/basics/#offset-modifier)
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var offsetModifier = ['offset'];
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var keywords = aggregations.concat(vectorMatching, offsetModifier);
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Prism.languages.promql = {
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'comment': {
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pattern: /(^[ \t]*)#.*/m,
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lookbehind: true
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},
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'vector-match': {
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// Match the comma-separated label lists inside vector matching:
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pattern: new RegExp('((?:' + vectorMatching.join('|') + ')\\s*)\\([^)]*\\)'),
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lookbehind: true,
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inside: {
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'label-key': {
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pattern: /\b[^,]*\b/,
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alias: 'attr-name',
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},
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'punctuation': /[(),]/
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},
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},
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'context-labels': {
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pattern: /\{[^{}]*\}/,
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inside: {
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'label-key': {
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pattern: /\b[a-z_]\w*(?=\s*(?:=~?|![=~]))/,
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alias: 'attr-name',
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},
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'label-value': {
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pattern: /(["'`])(?:\\[\s\S]|(?!\1)[^\\])*\1/,
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greedy: true,
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alias: 'attr-value',
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},
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'punctuation': /\{|\}|=~?|![=~]|,/,
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},
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},
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'context-range': [
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{
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pattern: /\[[\w\s:]+\]/, // [1m]
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inside: {
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'punctuation': /\[|\]|:/,
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'range-duration': {
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pattern: /\b(?:\d+(?:[smhdwy]|ms))+\b/i,
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alias: 'number',
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},
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},
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},
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{
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pattern: /(\boffset\s+)\w+/, // offset 1m
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lookbehind: true,
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inside: {
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'range-duration': {
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pattern: /\b(?:\d+(?:[smhdwy]|ms))+\b/i,
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alias: 'number',
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},
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},
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},
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],
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'keyword': new RegExp('\\b(?:' + keywords.join('|') + ')\\b', 'i'),
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'function': /\b[a-zA-Z_]\w*(?=\s*\()/i,
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'number': /[-+]?(?:(?:\b\d+(?:\.\d+)?|\B\.\d+)(?:e[-+]?\d+)?\b|\b(?:0x[0-9a-f]+|nan|inf)\b)/i,
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'operator': /[\^*/%+-]|==|!=|<=|<|>=|>|\b(?:and|unless|or)\b/i,
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'punctuation': /[{};()`,.[\]]/,
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};
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})(Prism);

‎components/prism-promql.min.js

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‎examples/prism-promql.html

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<h2>Examples</h2>
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<pre><code># These examples are taken from: https://prometheus.io/docs/prometheus/latest/querying/examples/
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http_requests_total{job="apiserver", handler="/api/comments"}[5m]
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http_requests_total{job=~".*server"}
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max_over_time(deriv(rate(distance_covered_total[5s])[30s:5s])[10m:])
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sum by (job) (
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rate(http_requests_total[5m])
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)
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sum by (app, proc) (
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instance_memory_limit_bytes - instance_memory_usage_bytes
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) / 1024 / 1024
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</code></pre>

‎plugins/show-language/prism-show-language.js

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"pq": "PowerQuery",
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"mscript": "PowerQuery",
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"powershell": "PowerShell",
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"promql": "PromQL",
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"properties": ".properties",
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"protobuf": "Protocol Buffers",
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"purebasic": "PureBasic",

‎plugins/show-language/prism-show-language.min.js

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‎tests/languages/promql/aggregate_selection.test

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sum by (job) (
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rate(http_requests_total[5m])
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)
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----------------------------------------------------
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[
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["keyword", "sum"],
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["keyword", "by"],
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["vector-match", [
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["punctuation", "("],
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["label-key", "job"],
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["punctuation", ")"]
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]],
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["punctuation", "("],
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["function", "rate"],
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["punctuation", "("],
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"http_requests_total",
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["context-range", [
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["punctuation", "["],
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["range-duration", "5m"],
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["punctuation", "]"]
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]],
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["punctuation", ")"],
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["punctuation", ")"]
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]
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----------------------------------------------------
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Checks aggregate query.

‎tests/languages/promql/comment_feature.test

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# These examples are taken from ...
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----------------------------------------------------
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[
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["comment", "# These examples are taken from ..."]
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]
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----------------------------------------------------
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Checks for comments.

‎tests/languages/promql/subquery_selection.test

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max_over_time(deriv(rate(distance_covered_total[5s])[30s:5s])[10m:])
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----------------------------------------------------
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[
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["function", "max_over_time"],
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["punctuation", "("],
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["function", "deriv"],
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["punctuation", "("],
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["function", "rate"],
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["punctuation", "("],
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"distance_covered_total",
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["context-range", [
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["punctuation", "["],
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["range-duration", "5s"],
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["punctuation", "]"]
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]],
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["punctuation", ")"],
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["context-range", [
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["punctuation", "["],
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["range-duration", "30s"],
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["punctuation", ":"],
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["range-duration", "5s"],
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["punctuation", "]"]
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]],
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["punctuation", ")"],
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["context-range", [
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["punctuation", "["],
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["range-duration", "10m"],
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["punctuation", ":"],
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["punctuation", "]"]
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]],
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["punctuation", ")"]
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]
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----------------------------------------------------
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Checks subquery.

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