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Refactoring of metatagging and extrafunctions to splice out the relation memberships, add calculatedTags and metatags into cache

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This commit is contained in:
Pieter Vander Vennet 2021-04-22 13:30:00 +02:00
parent 362abbf079
commit 0dec1d0f75
10 changed files with 98 additions and 54 deletions
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52
scripts/generateCache.ts
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@ -14,6 +14,8 @@ import ScriptUtils from "./ScriptUtils";
import ExtractRelations from "../Logic/Osm/ExtractRelations";
import * as OsmToGeoJson from "osmtogeojson";
import {Script} from "vm";
import MetaTagging from "../Logic/MetaTagging";
import State from "../State";
function createOverpassObject(theme: LayoutConfig) {
let filters: TagsFilter[] = [];
@ -26,8 +28,8 @@ function createOverpassObject(theme: LayoutConfig) {
continue;
}
if (layer.source.geojsonSource !== undefined) {
// Not our responsibility to download this layer!
continue;
// We download these anyway - we are building the cache after all!
//continue;
}
@ -68,17 +70,17 @@ function metaJsonName(targetDir: string, x: number, y: number, z: number): strin
return targetDir + "_" + z + "_" + x + "_" + y + ".meta.json"
}
async function downloadRaw(targetdir: string, r: TileRange, overpass: Overpass) {
async function downloadRaw(targetdir: string, r: TileRange, overpass: Overpass) {
let downloaded = 0
for (let x = r.xstart; x <= r.xend; x++) {
for (let y = r.ystart; y <= r.yend; y++) {
console.log("x:", (x - r.xstart), "/", (r.xend - r.xstart), "; y:", (y - r.ystart), "/", (r.yend - r.ystart), "; total: ", downloaded, "/", r.total)
downloaded++;
const filename = rawJsonName(targetdir, x, y, r.zoomlevel)
if (existsSync(filename)) {
console.log("Already exists: ", filename)
continue;
}
console.log("x:", (x - r.xstart), "/", (r.xend - r.xstart), "; y:", (y - r.ystart), "/", (r.yend - r.ystart), "; total: ", downloaded, "/", r.total)
const boundsArr = Utils.tile_bounds(r.zoomlevel, x, y)
const bounds = {
@ -87,28 +89,35 @@ async function downloadRaw(targetdir: string, r: TileRange, overpass: Overpass)
east: Math.max(boundsArr[0][1], boundsArr[1][1]),
west: Math.min(boundsArr[0][1], boundsArr[1][1])
}
console.log("Downloading tile", r.zoomlevel, x, y, "with bounds", bounds)
const url = overpass.buildQuery("[bbox:" + bounds.south + "," + bounds.west + "," + bounds.north + "," + bounds.east + "]")
let gotResponse = false
ScriptUtils.DownloadJSON(url,
chunks => {
gotResponse = true;
saveResponse(chunks, filename)
})
await ScriptUtils.sleep(10000)
console.debug("Waking up")
while (!gotResponse) {
await ScriptUtils.sleep(10000)
console.debug("Waking up")
if (!gotResponse) {
console.log("Didn't get an answer yet - waiting more")
}
}
}
}
}
async function postProcess(targetdir: string, r: TileRange) {
async function postProcess(targetdir: string, r: TileRange, theme: LayoutConfig) {
let processed = 0;
for (let x = r.xstart; x <= r.xend; x++) {
for (let y = r.ystart; y <= r.yend; y++) {
processed++;
const filename = rawJsonName(targetdir, x, y, r.zoomlevel)
console.log(" Post processing", processed, "/",r. total, filename)
console.log(" Post processing", processed, "/", r.total, filename)
if (!existsSync(filename)) {
throw "Not found - and not downloaded. Run this script again!: " + filename
}
@ -118,11 +127,26 @@ async function postProcess(targetdir: string, r: TileRange) {
// Create and save the geojson file - which is the main chunk of the data
const geojson = OsmToGeoJson.default(rawOsm);
const osmTime = new Date(rawOsm.osm3s.timestamp_osm_base);
for (const feature of geojson.features) {
for (const layer of theme.layers) {
if (layer.source.osmTags.matchesProperties(feature.properties)) {
feature["_matching_layer_id"] = layer.id;
break;
}
}
}
const featuresFreshness = geojson.features.map(feature => ({
freshness: osmTime,
feature: feature
}));
// Extract the relationship information
const relations = ExtractRelations.BuildMembershipTable(ExtractRelations.GetRelationElements(rawOsm))
MetaTagging.addMetatags(featuresFreshness, relations, theme.layers);
writeFileSync(geoJsonName(targetdir, x, y, r.zoomlevel), JSON.stringify(geojson))
// Extract the relationship information
const relations = ExtractRelations.GetRelationElements(rawOsm)
const osmTime = new Date(rawOsm.osm3s.timestamp_osm_base);
const meta = {
freshness: osmTime,
@ -145,7 +169,7 @@ async function main(args: string[]) {
}
const themeName = args[0]
const zoomlevel = Number(args[1])
const targetdir = args[2]
const targetdir = args[2] + "/" + themeName
const lat0 = Number(args[3])
const lon0 = Number(args[4])
const lat1 = Number(args[5])
@ -167,7 +191,7 @@ async function main(args: string[]) {
await downloadRaw(targetdir, tileRange, overpass)
await postProcess(targetdir, tileRange)
await postProcess(targetdir, tileRange, theme)
}