| 1 | ;
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| 2 | /**
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| 3 | * Copyright 2018, OpenCensus Authors
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| 4 | *
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| 5 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 6 | * you may not use this file except in compliance with the License.
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| 7 | * You may obtain a copy of the License at
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| 8 | *
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| 9 | * http://www.apache.org/licenses/LICENSE-2.0
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| 10 | *
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| 11 | * Unless required by applicable law or agreed to in writing, software
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| 12 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 14 | * See the License for the specific language governing permissions and
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| 15 | * limitations under the License.
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| 16 | */
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| 17 | Object.defineProperty(exports, "__esModule", { value: true });
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| 18 | const types_1 = require("../metrics/export/types");
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| 19 | const types_2 = require("./types");
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| 20 | /** Utils to convert Stats data models to Metric data models */
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| 21 | class MetricUtils {
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| 22 | /**
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| 23 | * Gets the corresponding metric type for the given stats type.
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| 24 | * @param measure The measure for which to find a metric type
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| 25 | * @param aggregation The aggregation for which to find a metric type
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| 26 | * @returns The Type of metric descriptor
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| 27 | */
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| 28 | static getType(measure, aggregation) {
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| 29 | if (aggregation === types_2.AggregationType.SUM) {
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| 30 | switch (measure.type) {
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| 31 | case types_2.MeasureType.INT64:
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| 32 | return types_1.MetricDescriptorType.CUMULATIVE_INT64;
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| 33 | case types_2.MeasureType.DOUBLE:
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| 34 | return types_1.MetricDescriptorType.CUMULATIVE_DOUBLE;
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| 35 | default:
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| 36 | throw new Error(`Unknown measure type ${measure.type}`);
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| 37 | }
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| 38 | }
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| 39 | else if (aggregation === types_2.AggregationType.COUNT) {
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| 40 | return types_1.MetricDescriptorType.CUMULATIVE_INT64;
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| 41 | }
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| 42 | else if (aggregation === types_2.AggregationType.DISTRIBUTION) {
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| 43 | return types_1.MetricDescriptorType.CUMULATIVE_DISTRIBUTION;
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| 44 | }
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| 45 | else if (aggregation === types_2.AggregationType.LAST_VALUE) {
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| 46 | switch (measure.type) {
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| 47 | case types_2.MeasureType.INT64:
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| 48 | return types_1.MetricDescriptorType.GAUGE_INT64;
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| 49 | case types_2.MeasureType.DOUBLE:
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| 50 | return types_1.MetricDescriptorType.GAUGE_DOUBLE;
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| 51 | default:
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| 52 | throw new Error(`Unknown measure type ${measure.type}`);
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| 53 | }
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| 54 | }
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| 55 | throw new Error(`Unknown aggregation type ${aggregation}`);
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| 56 | }
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| 57 | /**
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| 58 | * Gets a MetricDescriptor for given view.
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| 59 | * @param view The view for which to build a metric descriptor
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| 60 | * @returns The MetricDescriptor.
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| 61 | */
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| 62 | static viewToMetricDescriptor(view) {
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| 63 | return {
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| 64 | name: view.name,
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| 65 | description: view.description,
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| 66 | unit: view.measure.unit,
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| 67 | type: MetricUtils.getType(view.measure, view.aggregation),
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| 68 | labelKeys: view.getColumns().map(
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| 69 | // TODO(mayurkale): add description
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| 70 | tagKey => ({ key: tagKey.name, description: '' })),
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| 71 | };
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| 72 | }
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| 73 | /**
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| 74 | * Converts tag values to label values.
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| 75 | * @param tagValues the list of tag values
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| 76 | * @returns The List of label values
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| 77 | */
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| 78 | static tagValuesToLabelValues(tagValues) {
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| 79 | return tagValues.map(tagValue => ({
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| 80 | value: tagValue ? tagValue.value : null,
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| 81 | }));
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| 82 | }
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| 83 | }
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| 84 | exports.MetricUtils = MetricUtils;
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| 85 | //# sourceMappingURL=metric-utils.js.map |
| \ | No newline at end of file |