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67 lines
1.7 KiB
67 lines
1.7 KiB
// 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 storage |
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type lazySeriesSet struct { |
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create func() (s genericSeriesSet, ok bool) |
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set genericSeriesSet |
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} |
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func (c *lazySeriesSet) Next() bool { |
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if c.set != nil { |
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return c.set.Next() |
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} |
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var ok bool |
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c.set, ok = c.create() |
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return ok |
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} |
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func (c *lazySeriesSet) Err() error { |
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if c.set != nil { |
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return c.set.Err() |
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} |
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return nil |
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} |
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func (c *lazySeriesSet) At() Labels { |
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if c.set != nil { |
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return c.set.At() |
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} |
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return nil |
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} |
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func (c *lazySeriesSet) Warnings() Warnings { |
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if c.set != nil { |
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return c.set.Warnings() |
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} |
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return nil |
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} |
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type warningsOnlySeriesSet Warnings |
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func (warningsOnlySeriesSet) Next() bool { return false } |
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func (warningsOnlySeriesSet) Err() error { return nil } |
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func (warningsOnlySeriesSet) At() Labels { return nil } |
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func (c warningsOnlySeriesSet) Warnings() Warnings { return Warnings(c) } |
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type errorOnlySeriesSet struct { |
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err error |
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} |
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func (errorOnlySeriesSet) Next() bool { return false } |
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func (errorOnlySeriesSet) At() Labels { return nil } |
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func (s errorOnlySeriesSet) Err() error { return s.err } |
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func (errorOnlySeriesSet) Warnings() Warnings { return nil }
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