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