Remove engine specific types
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
This commit is contained in:
Tobias Guggenmos
parent
fab2373752
commit
98a9b7c90c
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// Copyright 2015 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package promql
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// Function represents a function of the expression language and is
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// used by function nodes.
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type Function struct {
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Name string
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ArgTypes []ValueType
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Variadic int
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ReturnType ValueType
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}
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// Functions is a list of all functions supported by PromQL, including their types.
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var Functions = map[string]*Function{
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"abs": {
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Name: "abs",
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ArgTypes: []ValueType{ValueTypeVector},
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ReturnType: ValueTypeVector,
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},
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"absent": {
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Name: "absent",
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ArgTypes: []ValueType{ValueTypeVector},
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ReturnType: ValueTypeVector,
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},
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"absent_over_time": {
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Name: "absent_over_time",
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ArgTypes: []ValueType{ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"avg_over_time": {
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Name: "avg_over_time",
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ArgTypes: []ValueType{ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"ceil": {
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Name: "ceil",
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ArgTypes: []ValueType{ValueTypeVector},
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ReturnType: ValueTypeVector,
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},
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"changes": {
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Name: "changes",
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ArgTypes: []ValueType{ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"clamp_max": {
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Name: "clamp_max",
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ArgTypes: []ValueType{ValueTypeVector, ValueTypeScalar},
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ReturnType: ValueTypeVector,
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},
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"clamp_min": {
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Name: "clamp_min",
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ArgTypes: []ValueType{ValueTypeVector, ValueTypeScalar},
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ReturnType: ValueTypeVector,
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},
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"count_over_time": {
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Name: "count_over_time",
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ArgTypes: []ValueType{ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"days_in_month": {
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Name: "days_in_month",
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ArgTypes: []ValueType{ValueTypeVector},
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Variadic: 1,
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ReturnType: ValueTypeVector,
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},
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"day_of_month": {
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Name: "day_of_month",
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ArgTypes: []ValueType{ValueTypeVector},
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Variadic: 1,
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ReturnType: ValueTypeVector,
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},
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"day_of_week": {
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Name: "day_of_week",
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ArgTypes: []ValueType{ValueTypeVector},
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Variadic: 1,
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ReturnType: ValueTypeVector,
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},
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"delta": {
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Name: "delta",
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ArgTypes: []ValueType{ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"deriv": {
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Name: "deriv",
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ArgTypes: []ValueType{ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"exp": {
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Name: "exp",
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ArgTypes: []ValueType{ValueTypeVector},
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ReturnType: ValueTypeVector,
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},
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"floor": {
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Name: "floor",
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ArgTypes: []ValueType{ValueTypeVector},
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ReturnType: ValueTypeVector,
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},
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"histogram_quantile": {
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Name: "histogram_quantile",
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ArgTypes: []ValueType{ValueTypeScalar, ValueTypeVector},
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ReturnType: ValueTypeVector,
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},
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"holt_winters": {
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Name: "holt_winters",
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ArgTypes: []ValueType{ValueTypeMatrix, ValueTypeScalar, ValueTypeScalar},
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ReturnType: ValueTypeVector,
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},
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"hour": {
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Name: "hour",
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ArgTypes: []ValueType{ValueTypeVector},
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Variadic: 1,
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ReturnType: ValueTypeVector,
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},
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"idelta": {
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Name: "idelta",
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ArgTypes: []ValueType{ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"increase": {
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Name: "increase",
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ArgTypes: []ValueType{ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"irate": {
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Name: "irate",
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ArgTypes: []ValueType{ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"label_replace": {
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Name: "label_replace",
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ArgTypes: []ValueType{ValueTypeVector, ValueTypeString, ValueTypeString, ValueTypeString, ValueTypeString},
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ReturnType: ValueTypeVector,
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},
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"label_join": {
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Name: "label_join",
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ArgTypes: []ValueType{ValueTypeVector, ValueTypeString, ValueTypeString, ValueTypeString},
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Variadic: -1,
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ReturnType: ValueTypeVector,
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},
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"ln": {
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Name: "ln",
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ArgTypes: []ValueType{ValueTypeVector},
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ReturnType: ValueTypeVector,
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},
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"log10": {
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Name: "log10",
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ArgTypes: []ValueType{ValueTypeVector},
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ReturnType: ValueTypeVector,
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},
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"log2": {
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Name: "log2",
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ArgTypes: []ValueType{ValueTypeVector},
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ReturnType: ValueTypeVector,
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},
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"max_over_time": {
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Name: "max_over_time",
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ArgTypes: []ValueType{ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"min_over_time": {
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Name: "min_over_time",
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ArgTypes: []ValueType{ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"minute": {
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Name: "minute",
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ArgTypes: []ValueType{ValueTypeVector},
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Variadic: 1,
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ReturnType: ValueTypeVector,
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},
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"month": {
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Name: "month",
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ArgTypes: []ValueType{ValueTypeVector},
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Variadic: 1,
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ReturnType: ValueTypeVector,
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},
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"predict_linear": {
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Name: "predict_linear",
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ArgTypes: []ValueType{ValueTypeMatrix, ValueTypeScalar},
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ReturnType: ValueTypeVector,
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},
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"quantile_over_time": {
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Name: "quantile_over_time",
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ArgTypes: []ValueType{ValueTypeScalar, ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"rate": {
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Name: "rate",
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ArgTypes: []ValueType{ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"resets": {
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Name: "resets",
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ArgTypes: []ValueType{ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"round": {
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Name: "round",
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ArgTypes: []ValueType{ValueTypeVector, ValueTypeScalar},
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Variadic: 1,
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ReturnType: ValueTypeVector,
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},
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"scalar": {
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Name: "scalar",
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ArgTypes: []ValueType{ValueTypeVector},
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ReturnType: ValueTypeScalar,
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},
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"sort": {
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Name: "sort",
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ArgTypes: []ValueType{ValueTypeVector},
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ReturnType: ValueTypeVector,
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},
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"sort_desc": {
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Name: "sort_desc",
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ArgTypes: []ValueType{ValueTypeVector},
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ReturnType: ValueTypeVector,
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},
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"sqrt": {
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Name: "sqrt",
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ArgTypes: []ValueType{ValueTypeVector},
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ReturnType: ValueTypeVector,
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},
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"stddev_over_time": {
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Name: "stddev_over_time",
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ArgTypes: []ValueType{ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"stdvar_over_time": {
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Name: "stdvar_over_time",
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ArgTypes: []ValueType{ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"sum_over_time": {
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Name: "sum_over_time",
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ArgTypes: []ValueType{ValueTypeMatrix},
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ReturnType: ValueTypeVector,
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},
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"time": {
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Name: "time",
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ArgTypes: []ValueType{},
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ReturnType: ValueTypeScalar,
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},
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"timestamp": {
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Name: "timestamp",
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ArgTypes: []ValueType{ValueTypeVector},
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ReturnType: ValueTypeVector,
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},
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"vector": {
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Name: "vector",
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ArgTypes: []ValueType{ValueTypeScalar},
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ReturnType: ValueTypeVector,
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},
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"year": {
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Name: "year",
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ArgTypes: []ValueType{ValueTypeVector},
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Variadic: 1,
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ReturnType: ValueTypeVector,
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},
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}
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// getFunction returns a predefined Function object for the given name.
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func getFunction(name string) (*Function, bool) {
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function, ok := Functions[name]
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return function, ok
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}
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@ -0,0 +1,45 @@
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// Copyright 2017 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package promql
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// Value is a generic interface for values resulting from a query evaluation.
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type Value interface {
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Type() ValueType
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String() string
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}
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// ValueType describes a type of a value.
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type ValueType string
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// The valid value types.
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const (
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ValueTypeNone = "none"
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ValueTypeVector = "vector"
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ValueTypeScalar = "scalar"
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ValueTypeMatrix = "matrix"
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ValueTypeString = "string"
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)
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// documentedType returns the internal type to the equivalent
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// user facing terminology as defined in the documentation.
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func documentedType(t ValueType) string {
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switch t {
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case "vector":
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return "instant vector"
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case "matrix":
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return "range vector"
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default:
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return string(t)
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}
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}
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