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…tions-it#1304 adding WMTS support to Leaflet, Openlayers and Catalog
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| /** | ||
| * Copyright 2016, GeoSolutions Sas. | ||
| * All rights reserved. | ||
| * | ||
| * This source code is licensed under the BSD-style license found in the | ||
| * LICENSE file in the root directory of this source tree. | ||
| */ | ||
| const axios = require('../libs/ajax'); | ||
| const ConfigUtils = require('../utils/ConfigUtils'); | ||
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| const urlUtil = require('url'); | ||
| const assign = require('object-assign'); | ||
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| const xml2js = require('xml2js'); | ||
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| const capabilitiesCache = {}; | ||
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| const {isArray, head} = require('lodash'); | ||
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| const castArray = require('lodash.castarray'); | ||
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| const CoordinatesUtils = require('../utils/CoordinatesUtils'); | ||
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| const parseUrl = (url) => { | ||
| const parsed = urlUtil.parse(url, true); | ||
| return urlUtil.format(assign({}, parsed, {search: null}, { | ||
| query: assign({ | ||
| SERVICE: "WMTS", | ||
| VERSION: "1.0.0", | ||
| REQUEST: "getcapabilities" | ||
| }, parsed.query) | ||
| })); | ||
| }; | ||
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| const flatLayers = (root) => { | ||
| return root.Layer ? (isArray(root.Layer) && root.Layer || [root.Layer]).reduce((previous, current) => { | ||
| return previous.concat(flatLayers(current)).concat((current.Layer && current["ows:Identifier"]) ? [current] : []); | ||
| }, []) : (root.ows.Title && [root] || []); | ||
| }; | ||
|
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| const getOperation = (operations, name, type) => { | ||
| return head(head(operations | ||
| .filter((operation) => operation.$.name === name) | ||
| .map((operation) => castArray(operation["ows:DCP"]["ows:HTTP"]["ows:Get"]))) | ||
| .filter((request) => (request["ows:Constraint"] && request["ows:Constraint"]["ows:AllowedValues"]["ows:Value"]) === type) | ||
| .map((request) => request.$["xlink:href"]) | ||
| ); | ||
| }; | ||
|
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| const searchAndPaginate = (json, startPosition, maxRecords, text) => { | ||
| const root = json.Capabilities.Contents; | ||
| const operations = castArray(json.Capabilities["ows:OperationsMetadata"]["ows:Operation"]); | ||
| const TileMatrixSet = (root.TileMatrixSet) || []; | ||
| let SRSList = []; | ||
| let len = TileMatrixSet.length; | ||
| for (let i = 0; i < len; i++) { | ||
| SRSList.push(CoordinatesUtils.getEPSGCode(TileMatrixSet[i]["ows:SupportedCRS"])); | ||
| } | ||
| const layersObj = root.Layer; | ||
| const layers = castArray(layersObj); | ||
| const filteredLayers = layers | ||
| .filter((layer) => !text || layer["ows:Identifier"].toLowerCase().indexOf(text.toLowerCase()) !== -1 || (layer["ows:Title"] && layer["ows:Title"].toLowerCase().indexOf(text.toLowerCase()) !== -1)); | ||
| return { | ||
| numberOfRecordsMatched: filteredLayers.length, | ||
| numberOfRecordsReturned: Math.min(maxRecords, filteredLayers.length), | ||
| nextRecord: startPosition + Math.min(maxRecords, filteredLayers.length) + 1, | ||
| records: filteredLayers | ||
| .filter((layer, index) => index >= (startPosition - 1) && index < (startPosition - 1) + maxRecords) | ||
| .map((layer) => assign({}, layer, {SRS: SRSList, TileMatrixSet, GetTileUrl: getOperation(operations, "GetTile", "KVP")})) | ||
| }; | ||
| }; | ||
|
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| const Api = { | ||
| getRecords: function(url, startPosition, maxRecords, text) { | ||
| const cached = capabilitiesCache[url]; | ||
| if (cached && new Date().getTime() < cached.timestamp + (ConfigUtils.getConfigProp('cacheExpire') || 60) * 1000) { | ||
| return new Promise((resolve) => { | ||
| resolve(searchAndPaginate(cached.data, startPosition, maxRecords, text)); | ||
| }); | ||
| } | ||
| return axios.get(parseUrl(url)).then((response) => { | ||
| let json; | ||
| xml2js.parseString(response.data, {explicitArray: false}, (ignore, result) => { | ||
| json = result; | ||
| }); | ||
| capabilitiesCache[url] = { | ||
| timestamp: new Date().getTime(), | ||
| data: json | ||
| }; | ||
| return searchAndPaginate(json, startPosition, maxRecords, text); | ||
| }); | ||
| }, | ||
| textSearch: function(url, startPosition, maxRecords, text) { | ||
| return Api.getRecords(url, startPosition, maxRecords, text); | ||
| } | ||
| }; | ||
|
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| module.exports = Api; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| /** | ||
| * Copyright 2016, GeoSolutions Sas. | ||
| * All rights reserved. | ||
| * | ||
| * This source code is licensed under the BSD-style license found in the | ||
| * LICENSE file in the root directory of this source tree. | ||
| */ | ||
|
|
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| const expect = require('expect'); | ||
| const API = require('../WMTS'); | ||
|
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| describe('Test correctness of the WMTS APIs', () => { | ||
| it('GetRecords', (done) => { | ||
| API.getRecords('base/web/client/test-resources/wmts/GetCapabilities-1.0.0.xml', 0, 1, '').then((result) => { | ||
| try { | ||
| expect(result).toExist(); | ||
| expect(result.numberOfRecordsMatched).toBe(3); | ||
| done(); | ||
| } catch(ex) { | ||
| done(ex); | ||
| } | ||
| }); | ||
| }); | ||
| }); |
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