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Add binary format middleware for sequence data.

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It responds to the MIME type:
application/dougal-map-sequence+octet-stream
This commit is contained in:
D. Berge
2022-03-29 13:24:38 +02:00
parent 4db6d8dd7a
commit 808c9987af
2 changed files with 63 additions and 0 deletions
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61
lib/www/server/api/middleware/sequence/get/binary.js Normal file
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@@ -0,0 +1,61 @@
const { sequence } = require('../../../../lib/db');
const { MSGTYPE, encode } = require('../../../../lib/binary');
module.exports = async function (req, res, next) {
try {
const json = await sequence.get(req.params.project, req.params.sequence, req.query);
let msgType, geometry, error;
switch (req.query.geometry) {
case "F":
case "FINAL":
msgType = MSGTYPE.FINAL_OPT;
geometry = "geometryfinal";
error = "errorfinal";
break;
case "f":
case "final":
msgType = MSGTYPE.FINAL;
geometry = "geometryfinal";
error = "errorfinal";
break;
case "R":
case "RAW":
msgType = MSGTYPE.RAW_OPT;
geometry = "geometryraw";
error = "errorraw";
break;
case "r":
case "raw":
msgType = MSGTYPE.RAW;
geometry = "geometryraw";
error = "errorraw";
break;
case "P":
case "PREPLOT":
msgType = MSGTYPE.PREPLOT_RAWERROR_OPT;
geometry = "geometrypreplot";
error = ["errorfinal", "errorraw"];
break;
case "p":
case "preplot":
default:
msgType = MSGTYPE.PREPLOT;
geometry = "geometrypreplot";
break;
}
const endianness = req.query.endianness != "big";
const data = encode(json, geometry, error, msgType, endianness);
console.log("bundle", data);
res.status(200).send(Buffer.from(data));
next();
} catch (err) {
next(err);
}
};

2
lib/www/server/api/middleware/sequence/get/index.js
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@@ -1,11 +1,13 @@
const json = require('./json'); const json = require('./json');
const geojson = require('./geojson'); const geojson = require('./geojson');
const binary = require('./binary');
module.exports = async function (req, res, next) { module.exports = async function (req, res, next) {
try { try {
const handlers = { const handlers = {
"application/json": json, "application/json": json,
"application/geo+json": geojson, "application/geo+json": geojson,
"application/dougal-map-sequence+octet-stream": binary
}; };
const mimetype = (handlers[req.query.mime] && req.query.mime) || req.accepts(Object.keys(handlers)); const mimetype = (handlers[req.query.mime] && req.query.mime) || req.accepts(Object.keys(handlers));