257 lines
9.2 KiB
TypeScript
257 lines
9.2 KiB
TypeScript
/**
|
|
* Generates a collection of geojson files based on an overpass query for a given theme
|
|
*/
|
|
import {TileRange, Utils} from "../Utils";
|
|
|
|
Utils.runningFromConsole = true
|
|
import {Overpass} from "../Logic/Osm/Overpass";
|
|
import {existsSync, readFileSync, writeFileSync} from "fs";
|
|
import {TagsFilter} from "../Logic/Tags/TagsFilter";
|
|
import {Or} from "../Logic/Tags/Or";
|
|
import LayoutConfig from "../Customizations/JSON/LayoutConfig";
|
|
import {AllKnownLayouts} from "../Customizations/AllKnownLayouts";
|
|
import ScriptUtils from "./ScriptUtils";
|
|
import ExtractRelations from "../Logic/Osm/ExtractRelations";
|
|
import * as OsmToGeoJson from "osmtogeojson";
|
|
import MetaTagging from "../Logic/MetaTagging";
|
|
import LayerConfig from "../Customizations/JSON/LayerConfig";
|
|
import {GeoOperations} from "../Logic/GeoOperations";
|
|
|
|
|
|
function createOverpassObject(theme: LayoutConfig) {
|
|
let filters: TagsFilter[] = [];
|
|
let extraScripts: string[] = [];
|
|
for (const layer of theme.layers) {
|
|
if (typeof (layer) === "string") {
|
|
throw "A layer was not expanded!"
|
|
}
|
|
if (layer.doNotDownload) {
|
|
continue;
|
|
}
|
|
if (layer.source.geojsonSource !== undefined) {
|
|
// We download these anyway - we are building the cache after all!
|
|
//continue;
|
|
}
|
|
|
|
|
|
// Check if data for this layer has already been loaded
|
|
if (layer.source.overpassScript !== undefined) {
|
|
extraScripts.push(layer.source.overpassScript)
|
|
} else {
|
|
filters.push(layer.source.osmTags);
|
|
}
|
|
}
|
|
filters = Utils.NoNull(filters)
|
|
extraScripts = Utils.NoNull(extraScripts)
|
|
if (filters.length + extraScripts.length === 0) {
|
|
throw "Nothing to download! The theme doesn't declare anything to download"
|
|
}
|
|
return new Overpass(new Or(filters), extraScripts);
|
|
}
|
|
|
|
function saveResponse(chunks: string[], targetDir: string): boolean {
|
|
const contents = chunks.join("")
|
|
if (contents.startsWith("<?xml")) {
|
|
// THis is an error message
|
|
console.error("Failed to create ", targetDir, "probably over quota: ", contents)
|
|
return false;
|
|
}
|
|
writeFileSync(targetDir, contents)
|
|
return true
|
|
}
|
|
|
|
function rawJsonName(targetDir: string, x: number, y: number, z: number): string {
|
|
return targetDir + "_" + z + "_" + x + "_" + y + ".json"
|
|
}
|
|
|
|
function geoJsonName(targetDir: string, x: number, y: number, z: number): string {
|
|
return targetDir + "_" + z + "_" + x + "_" + y + ".geojson"
|
|
}
|
|
|
|
async function downloadRaw(targetdir: string, r: TileRange, overpass: Overpass)/* : {failed: number, skipped :number} */ {
|
|
let downloaded = 0
|
|
let failed = 0
|
|
let skipped = 0
|
|
for (let x = r.xstart; x <= r.xend; x++) {
|
|
for (let y = r.ystart; y <= r.yend; y++) {
|
|
downloaded++;
|
|
const filename = rawJsonName(targetdir, x, y, r.zoomlevel)
|
|
if (existsSync(filename)) {
|
|
console.log("Already exists: ", filename)
|
|
skipped++
|
|
continue;
|
|
}
|
|
console.log("x:", (x - r.xstart), "/", (r.xend - r.xstart), "; y:", (y - r.ystart), "/", (r.yend - r.ystart), "; total: ", downloaded, "/", r.total, "failed: ", failed, "skipped: ", skipped)
|
|
|
|
const boundsArr = Utils.tile_bounds(r.zoomlevel, x, y)
|
|
const bounds = {
|
|
north: Math.max(boundsArr[0][0], boundsArr[1][0]),
|
|
south: Math.min(boundsArr[0][0], boundsArr[1][0]),
|
|
east: Math.max(boundsArr[0][1], boundsArr[1][1]),
|
|
west: Math.min(boundsArr[0][1], boundsArr[1][1])
|
|
}
|
|
const url = overpass.buildQuery("[bbox:" + bounds.south + "," + bounds.west + "," + bounds.north + "," + bounds.east + "]")
|
|
|
|
let gotResponse = false
|
|
let success = false;
|
|
ScriptUtils.DownloadJSON(url,
|
|
chunks => {
|
|
gotResponse = true;
|
|
success = saveResponse(chunks, filename)
|
|
})
|
|
|
|
while (!gotResponse) {
|
|
await ScriptUtils.sleep(10000)
|
|
console.debug("Waking up")
|
|
if (!gotResponse) {
|
|
console.log("Didn't get an answer yet - waiting more")
|
|
}
|
|
}
|
|
|
|
if (!success) {
|
|
failed++;
|
|
console.log("Hit the rate limit - waiting 90s")
|
|
for (let i = 0; i < 90; i++) {
|
|
console.log(90 - i)
|
|
await ScriptUtils.sleep(1000)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return {failed: failed, skipped: skipped}
|
|
}
|
|
|
|
async function postProcess(targetdir: string, r: TileRange, theme: LayoutConfig) {
|
|
let processed = 0;
|
|
const layerIndex = theme.LayerIndex();
|
|
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)
|
|
if (!existsSync(filename)) {
|
|
throw "Not found - and not downloaded. Run this script again!: " + filename
|
|
}
|
|
|
|
// We read the raw OSM-file and convert it to a geojson
|
|
const rawOsm = JSON.parse(readFileSync(filename, "UTF8"))
|
|
|
|
// 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;
|
|
}
|
|
}
|
|
if(feature["_matching_layer_id"] === undefined){
|
|
console.log("No matching layer found for ", feature.properties.id)
|
|
}
|
|
}
|
|
const featuresFreshness = geojson.features.map(feature => {
|
|
return ({
|
|
freshness: osmTime,
|
|
feature: feature
|
|
});
|
|
});
|
|
// Extract the relationship information
|
|
const relations = ExtractRelations.BuildMembershipTable(ExtractRelations.GetRelationElements(rawOsm))
|
|
MetaTagging.addMetatags(featuresFreshness, relations, theme.layers, false);
|
|
|
|
|
|
for (const feature of geojson.features) {
|
|
const layer = layerIndex.get(feature["_matching_layer_id"])
|
|
if (layer === undefined) {
|
|
// Probably some extra, unneeded data, e.g. a point of a way
|
|
continue
|
|
}
|
|
|
|
if (layer.wayHandling == LayerConfig.WAYHANDLING_CENTER_ONLY) {
|
|
|
|
const centerpoint = GeoOperations.centerpointCoordinates(feature)
|
|
|
|
feature.geometry.type = "Point"
|
|
feature.geometry["coordinates"] = centerpoint;
|
|
|
|
}
|
|
}
|
|
|
|
|
|
writeFileSync(geoJsonName(targetdir, x, y, r.zoomlevel), JSON.stringify(geojson, null, " "))
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
async function splitPerLayer(targetdir: string, r: TileRange, theme: LayoutConfig) {
|
|
const z = r.zoomlevel;
|
|
for (let x = r.xstart; x <= r.xend; x++) {
|
|
for (let y = r.ystart; y <= r.yend; y++) {
|
|
const file = readFileSync(geoJsonName(targetdir, x, y, z), "UTF8")
|
|
|
|
for (const layer of theme.layers) {
|
|
const geojson = JSON.parse(file)
|
|
geojson.features = geojson.features.filter(f => f._matching_layer_id === layer.id)
|
|
if (geojson.features.length == 0) {
|
|
continue;
|
|
}
|
|
const new_path = geoJsonName(targetdir + "_" + layer.id, x, y, z);
|
|
writeFileSync(new_path, JSON.stringify(geojson, null, " "))
|
|
}
|
|
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
async function main(args: string[]) {
|
|
|
|
if (args.length == 0) {
|
|
console.error("Expected arguments are: theme zoomlevel targetdirectory lat0 lon0 lat1 lon1")
|
|
return;
|
|
}
|
|
const themeName = args[0]
|
|
const zoomlevel = Number(args[1])
|
|
const targetdir = args[2] + "/" + themeName
|
|
const lat0 = Number(args[3])
|
|
const lon0 = Number(args[4])
|
|
const lat1 = Number(args[5])
|
|
const lon1 = Number(args[6])
|
|
|
|
const tileRange = Utils.TileRangeBetween(zoomlevel, lat0, lon0, lat1, lon1)
|
|
|
|
const theme = AllKnownLayouts.allKnownLayouts.get(themeName)
|
|
if (theme === undefined) {
|
|
const keys = []
|
|
AllKnownLayouts.allKnownLayouts.forEach((_, key) => {
|
|
keys.push(key)
|
|
})
|
|
console.error("The theme " + theme + " was not found; try one of ", keys);
|
|
return
|
|
}
|
|
|
|
const overpass = createOverpassObject(theme)
|
|
|
|
let failed = 0;
|
|
do {
|
|
const cachingResult = await downloadRaw(targetdir, tileRange, overpass)
|
|
failed = cachingResult.failed
|
|
if (failed > 0) {
|
|
ScriptUtils.sleep(30000)
|
|
}
|
|
} while (failed > 0)
|
|
|
|
await postProcess(targetdir, tileRange, theme)
|
|
await splitPerLayer(targetdir, tileRange, theme)
|
|
}
|
|
|
|
|
|
let args = [...process.argv]
|
|
args.splice(0, 2)
|
|
main(args); |