Add nextstrain endpoint to server

taxonium_backend/README.md

@@ -1,9 +1,12 @@
 # Backend
 
-`nvm use 17.5`
+`nvm use 18`
 
 `yarn install`
 
+`node server.js --data_url https://cov2tree.nyc3.cdn.digitaloceanspaces.com/tfci-taxonium2.jsonl`
+
+
 `node --experimental-fetch server.js --database_dir ./database/ --port 8080 --ssl --config_json config.json`
 
 Non-SSL public:

taxonium_backend/server.js

@@ -11,6 +11,7 @@ var axios = require("axios");
 var pako = require("pako");
 var importing;
 var filtering;
+var exporting;
 
 const { program } = require("commander");
 
@@ -73,6 +74,14 @@ import("taxonium_data_handling/filtering.js").then((imported) => {
   console.log("imported filtering");
 });
 
+
+
+import("taxonium_data_handling/exporting.js").then((imported) => {
+  exporting = imported.default;
+  console.log("imported exporting");
+});
+
+
 waitForTheImports = async () => {
   if (importing === undefined || filtering === undefined) {
     await new Promise((resolve) => {
@@ -385,6 +394,14 @@ app.get("/tip_atts", async (req, res) => {
   );
 });
 
+
+app.get("/nextstrain_json", async (req, res) => {
+  const root_id = parseInt(req.query.root_id);
+  const json = await exporting.getNextstrainSubtreeJson(root_id, processedData.nodes);
+  res.send(json);
+
+});
+
 const loadData = async () => {
   await waitForTheImports();
   let supplied_object;