| // Copyright 2017, OpenCensus Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| |
| /* |
| Package view contains support for collecting and exposing aggregates over stats. |
| |
| In order to collect measurements, views need to be defined and registered. |
| A view allows recorded measurements to be filtered and aggregated over a time window. |
| |
| All recorded measurements can be filtered by a list of tags. |
| |
| OpenCensus provides several aggregation methods: count, distribution and sum. |
| Count aggregation only counts the number of measurement points. Distribution |
| aggregation provides statistical summary of the aggregated data. Sum distribution |
| sums up the measurement points. Aggregations are cumulative. |
| |
| Users can dynamically create and delete views. |
| |
| Libraries can export their own views and claim the view names |
| by registering them themselves. |
| |
| Exporting |
| |
| Collected and aggregated data can be exported to a metric collection |
| backend by registering its exporter. |
| |
| Multiple exporters can be registered to upload the data to various |
| different backends. Users need to unregister the exporters once they |
| no longer are needed. |
| */ |
| package view // import "go.opencensus.io/stats/view" |
| |
| // TODO(acetechnologist): Add a link to the language independent OpenCensus |
| // spec when it is available. |
