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42 lines
1.6 KiB
Go
42 lines
1.6 KiB
Go
// Copyright 2013 Prometheus Team
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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 rules
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import (
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"html/template"
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"time"
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"github.com/prometheus/prometheus/rules/ast"
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"github.com/prometheus/prometheus/storage/metric"
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)
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// A Rule encapsulates a vector expression which is evaluated at a specified
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// interval and acted upon (currently either recorded or used for alerting).
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type Rule interface {
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// Name returns the name of the rule.
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Name() string
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// EvalRaw evaluates the rule's vector expression without triggering any
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// other actions, like recording or alerting.
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EvalRaw(timestamp time.Time, storage *metric.TieredStorage) (ast.Vector, error)
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// Eval evaluates the rule, including any associated recording or alerting actions.
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Eval(timestamp time.Time, storage *metric.TieredStorage) (ast.Vector, error)
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// ToDotGraph returns a Graphviz dot graph of the rule.
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ToDotGraph() string
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// String returns a human-readable string representation of the rule.
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String() string
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// HTMLSnippet returns a human-readable string representation of the rule,
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// decorated with HTML elements for use the web frontend.
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HTMLSnippet() template.HTML
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}
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