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Expand p_httpfetch to handle callbacks

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This commit is contained in:
Mitra Ardron 2019-02-12 16:22:34 +11:00
parent ca303fdb06
commit bd6ea94eb4
2 changed files with 22 additions and 14 deletions
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14
TransportHTTP.js
View File

@ -119,7 +119,7 @@ class TransportHTTP extends Transport {
*/
//PY: res = self._sendGetPost(True, "rawstore", headers={"Content-Type": "application/octet-stream"}, urlargs=[], data=data)
console.assert(data, "TransportHttp.p_rawstore: requires data");
const res = await httptools.p_POST(this._cmdurl(servercommands.rawstore), "application/octet-stream", data); // resolves to URL
const res = await httptools.p_POST(this._cmdurl(servercommands.rawstore), {data, contenttype: "application/octet-stream"}); // resolves to URL
let parsedurl = Url.parse(res);
let pathparts = parsedurl.pathname.split('/');
return `contenthash:/contenthash/${pathparts.slice(-1)}`
@ -129,8 +129,8 @@ class TransportHTTP extends Transport {
p_rawadd(url, sig) {
// Logged by Transports
if (!url || !sig) throw new errors.CodingError("TransportHTTP.p_rawadd: invalid parms", url, sig);
let value = stringify(sig.preflight(Object.assign({},sig)))+"\n";
return httptools.p_POST(this._url(url, servercommands.rawadd), "application/json", value); // Returns immediately
const data = stringify(sig.preflight(Object.assign({},sig)))+"\n";
return httptools.p_POST(this._url(url, servercommands.rawadd), {data, contenttype: "application/json"}); // Returns immediately
}
p_newlisturls(cl) {
@ -257,11 +257,11 @@ class TransportHTTP extends Transport {
// Logged by Transports
//debughttp("p_set %o %o %o", url, keyvalues, value);
if (typeof keyvalues === "string") {
let kv = stringify([{key: keyvalues, value: value}]);
await httptools.p_POST(this._url(url, servercommands.set), "application/json", kv); // Returns immediately
let data = stringify([{key: keyvalues, value: value}]);
await httptools.p_POST(this._url(url, servercommands.set), {data, contenttype: "application/json"}); // Returns immediately
} else {
let kv = stringify(Object.keys(keyvalues).map((k) => ({"key": k, "value": keyvalues[k]})));
await httptools.p_POST(this._url(url, servercommands.set), "application/json", kv); // Returns immediately
let data = stringify(Object.keys(keyvalues).map((k) => ({"key": k, "value": keyvalues[k]})));
await httptools.p_POST(this._url(url, servercommands.set), {data, contenttype: "application/json"}); // Returns immediately
}
}

22
httptools.js
View File

@ -98,16 +98,16 @@ httptools.p_httpfetch = async function(httpurl, init, {wantstream=false}={}) { /
}
}
httptools.p_GET = function(httpurl, opts={}) {
httptools.p_GET = function(httpurl, opts={}, cb) { //TODO-API rearranged and addded cb
/* Locate and return a block, based on its url
Throws TransportError if fails
opts {
start, end, // Range of bytes wanted - inclusive i.e. 0,1023 is 1024 bytes
wantstream, // Return a stream rather than data
}
resolves to: URL that can be used to fetch the resource, of form contenthash:/contenthash/Q123
returns result via promise or cb(err, result)
*/
if (typeof opts === "function") { cb = opts; opts = {}; }
let headers = new Headers();
if (opts.start || opts.end) headers.append("range", `bytes=${opts.start || 0}-${(opts.end<Infinity) ? opts.end : ""}`);
let init = { //https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch
@ -118,13 +118,18 @@ httptools.p_GET = function(httpurl, opts={}) {
redirect: 'follow', // Chrome defaults to manual
keepalive: true // Keep alive - mostly we'll be going back to same places a lot
};
return httptools.p_httpfetch(httpurl, init, {wantstream: opts.wantstream}); // This s a real http url
const prom = httptools.p_httpfetch(httpurl, init, {wantstream: opts.wantstream}); // This s a real http url
if (cb) { prom.then((res)=>cb(null,res)).catch((err) => cb(err)); } else { return prom; } // Unpromisify pattern v3
}
httptools.p_POST = function(httpurl, type, data) {
// Locate and return a block, based on its url
httptools.p_POST = function(httpurl, opts={}, cb) { //TODO-API rearranged and addded cb
/* Locate and return a block, based on its url
opts = { data, contenttype }
returns result via promise or cb(err, result)
*/
// Throws TransportError if fails
//let headers = new window.Headers();
//headers.set('content-type',type); Doesn't work, it ignores it
if (typeof opts === "function") { cb = opts; opts = {}; }
let init = {
//https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch
//https://developer.mozilla.org/en-US/docs/Glossary/Forbidden_header_name for headers tat cant be set
@ -137,7 +142,10 @@ httptools.p_POST = function(httpurl, type, data) {
redirect: 'follow', // Chrome defaults to manual
keepalive: true // Keep alive - mostly we'll be going back to same places a lot
};
return httptools.p_httpfetch(httpurl, init);
const prom = httptools.p_httpfetch(httpurl, init);
if (cb) { prom.then((res)=>cb(null,res)).catch((err) => cb(err)); } else { return prom; } // Unpromisify pattern v3
}
exports = module.exports = httptools;