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96 lines
3.1 KiB
Protocol Buffer
96 lines
3.1 KiB
Protocol Buffer
// 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 dto;
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message LabelPair {
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optional string name = 1;
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optional string value = 2;
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}
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message LabelName {
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optional string name = 1;
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}
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message Metric {
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repeated LabelPair label_pair = 1;
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}
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message Fingerprint {
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optional string signature = 1;
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}
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message FingerprintCollection {
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repeated Fingerprint member = 1;
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}
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message LabelSet {
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repeated LabelPair member = 1;
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}
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// The default LevelDB comparator sorts not only lexicographically, but also by
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// key length (which takes precedence). Thus, no variable-length fields may be
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// introduced into the key definition below.
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message SampleKey {
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optional Fingerprint fingerprint = 1;
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optional bytes timestamp = 2;
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optional sfixed64 last_timestamp = 3;
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optional fixed32 sample_count = 4;
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}
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message SampleValueSeries {
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message Value {
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optional int64 timestamp = 1;
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optional double value = 2;
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}
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repeated Value value = 1;
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}
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message MembershipIndexValue {
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}
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message MetricHighWatermark {
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optional int64 timestamp = 1;
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}
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// CurationKey models the state of curation for a given metric fingerprint and
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// its associated samples. The time series database only knows about compaction
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// and resampling behaviors that are explicitly defined to it in its runtime
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// configuration, meaning it never scans on-disk tables for CurationKey
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// policies; rather, it looks up via the CurationKey tuple to find out what the
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// effectuation state for a given metric fingerprint is.
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//
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// For instance, how far along as a rule for (Fingerprint A, Samples Older Than
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// B, and Grouped Together in Size of C) has been effectuated on-disk.
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message CurationKey {
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// fingerprint identifies the fingerprint for the given policy.
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optional Fingerprint fingerprint = 1;
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// older_than represents in seconds relative to when curation cycle starts
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// into the past when the curator should stop operating on a given metric
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// fingerprint's samples:
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//
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// [Oldest Sample Time, time.Now().Sub(time.Second * older_than))
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optional int64 older_than = 2;
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// minimum_group_size identifies how minimally samples should be grouped
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// together to write a new SampleValueSeries chunk.
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optional uint32 minimum_group_size = 3;
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}
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// CurationValue models the progress for a given CurationKey.
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message CurationValue {
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// last_completion_timestamp represents the seconds since the epoch UTC at
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// which the curator last completed its duty cycle for a given metric
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// fingerprint.
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optional int64 last_completion_timestamp = 1;
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}
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