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5a953d5 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 | import * as hrana from "@libsql/hrana-client";
import { LibsqlError } from "@libsql/core/api";
import { expandConfig } from "@libsql/core/config";
import { HranaTransaction, executeHranaBatch, stmtToHrana, resultSetFromHrana, mapHranaError, } from "./hrana.js";
import { SqlCache } from "./sql_cache.js";
import { encodeBaseUrl } from "@libsql/core/uri";
import { supportedUrlLink } from "@libsql/core/util";
import promiseLimit from "promise-limit";
export * from "@libsql/core/api";
export function createClient(config) {
return _createClient(expandConfig(config, true));
}
/** @private */
export function _createClient(config) {
if (config.scheme !== "https" && config.scheme !== "http") {
throw new LibsqlError('The HTTP client supports only "libsql:", "https:" and "http:" URLs, ' +
`got ${JSON.stringify(config.scheme + ":")}. For more information, please read ${supportedUrlLink}`, "URL_SCHEME_NOT_SUPPORTED");
}
if (config.encryptionKey !== undefined) {
throw new LibsqlError("Encryption key is not supported by the remote client.", "ENCRYPTION_KEY_NOT_SUPPORTED");
}
if (config.scheme === "http" && config.tls) {
throw new LibsqlError(`A "http:" URL cannot opt into TLS by using ?tls=1`, "URL_INVALID");
}
else if (config.scheme === "https" && !config.tls) {
throw new LibsqlError(`A "https:" URL cannot opt out of TLS by using ?tls=0`, "URL_INVALID");
}
const url = encodeBaseUrl(config.scheme, config.authority, config.path);
return new HttpClient(url, config.authToken, config.intMode, config.fetch, config.concurrency, config.remoteEncryptionKey);
}
const sqlCacheCapacity = 30;
export class HttpClient {
#client;
protocol;
#url;
#intMode;
#customFetch;
#concurrency;
#authToken;
#remoteEncryptionKey;
#promiseLimitFunction;
/** @private */
constructor(url, authToken, intMode, customFetch, concurrency, remoteEncryptionKey) {
this.#url = url;
this.#authToken = authToken;
this.#intMode = intMode;
this.#customFetch = customFetch;
this.#concurrency = concurrency;
this.#remoteEncryptionKey = remoteEncryptionKey;
this.#client = hrana.openHttp(this.#url, this.#authToken, this.#customFetch, remoteEncryptionKey);
this.#client.intMode = this.#intMode;
this.protocol = "http";
this.#promiseLimitFunction = promiseLimit(this.#concurrency);
}
async limit(fn) {
return this.#promiseLimitFunction(fn);
}
async execute(stmtOrSql, args) {
let stmt;
if (typeof stmtOrSql === "string") {
stmt = {
sql: stmtOrSql,
args: args || [],
};
}
else {
stmt = stmtOrSql;
}
return this.limit(async () => {
try {
const hranaStmt = stmtToHrana(stmt);
// Pipeline all operations, so `hrana.HttpClient` can open the stream, execute the statement and
// close the stream in a single HTTP request.
let rowsPromise;
const stream = this.#client.openStream();
try {
rowsPromise = stream.query(hranaStmt);
}
finally {
stream.closeGracefully();
}
const rowsResult = await rowsPromise;
return resultSetFromHrana(rowsResult);
}
catch (e) {
throw mapHranaError(e);
}
});
}
async batch(stmts, mode = "deferred") {
return this.limit(async () => {
try {
const normalizedStmts = stmts.map((stmt) => {
if (Array.isArray(stmt)) {
return {
sql: stmt[0],
args: stmt[1] || [],
};
}
return stmt;
});
const hranaStmts = normalizedStmts.map(stmtToHrana);
const version = await this.#client.getVersion();
// Pipeline all operations, so `hrana.HttpClient` can open the stream, execute the batch and
// close the stream in a single HTTP request.
let resultsPromise;
const stream = this.#client.openStream();
try {
// It makes sense to use a SQL cache even for a single batch, because it may contain the same
// statement repeated multiple times.
const sqlCache = new SqlCache(stream, sqlCacheCapacity);
sqlCache.apply(hranaStmts);
// TODO: we do not use a cursor here, because it would cause three roundtrips:
// 1. pipeline request to store SQL texts
// 2. cursor request
// 3. pipeline request to close the stream
const batch = stream.batch(false);
resultsPromise = executeHranaBatch(mode, version, batch, hranaStmts);
}
finally {
stream.closeGracefully();
}
const results = await resultsPromise;
return results;
}
catch (e) {
throw mapHranaError(e);
}
});
}
async migrate(stmts) {
return this.limit(async () => {
try {
const hranaStmts = stmts.map(stmtToHrana);
const version = await this.#client.getVersion();
// Pipeline all operations, so `hrana.HttpClient` can open the stream, execute the batch and
// close the stream in a single HTTP request.
let resultsPromise;
const stream = this.#client.openStream();
try {
const batch = stream.batch(false);
resultsPromise = executeHranaBatch("deferred", version, batch, hranaStmts, true);
}
finally {
stream.closeGracefully();
}
const results = await resultsPromise;
return results;
}
catch (e) {
throw mapHranaError(e);
}
});
}
async transaction(mode = "write") {
return this.limit(async () => {
try {
const version = await this.#client.getVersion();
return new HttpTransaction(this.#client.openStream(), mode, version);
}
catch (e) {
throw mapHranaError(e);
}
});
}
async executeMultiple(sql) {
return this.limit(async () => {
try {
// Pipeline all operations, so `hrana.HttpClient` can open the stream, execute the sequence and
// close the stream in a single HTTP request.
let promise;
const stream = this.#client.openStream();
try {
promise = stream.sequence(sql);
}
finally {
stream.closeGracefully();
}
await promise;
}
catch (e) {
throw mapHranaError(e);
}
});
}
sync() {
throw new LibsqlError("sync not supported in http mode", "SYNC_NOT_SUPPORTED");
}
close() {
this.#client.close();
}
async reconnect() {
try {
if (!this.closed) {
// Abort in-flight ops and free resources
this.#client.close();
}
}
finally {
// Recreate the underlying hrana client
this.#client = hrana.openHttp(this.#url, this.#authToken, this.#customFetch, this.#remoteEncryptionKey);
this.#client.intMode = this.#intMode;
}
}
get closed() {
return this.#client.closed;
}
}
export class HttpTransaction extends HranaTransaction {
#stream;
#sqlCache;
/** @private */
constructor(stream, mode, version) {
super(mode, version);
this.#stream = stream;
this.#sqlCache = new SqlCache(stream, sqlCacheCapacity);
}
/** @private */
_getStream() {
return this.#stream;
}
/** @private */
_getSqlCache() {
return this.#sqlCache;
}
close() {
this.#stream.close();
}
get closed() {
return this.#stream.closed;
}
}
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