89 lines
2.5 KiB
JavaScript
89 lines
2.5 KiB
JavaScript
return {
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getToken() {
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return new Promise(async (resolve, reject) => {
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try {
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getRedisKey = function () {
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return `fhir-${fhirSettings.jwt.clientId}`;
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};
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const tokenEntry = await redis.hGetAll(getRedisKey());
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const currentTimeInSeconds = Math.floor(new Date().getTime() / 1000);
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if (tokenEntry.exp >= currentTimeInSeconds) {
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resolve(JSON.parse(tokenEntry.token));
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return;
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}
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// start the expiry base before we create a new token
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let expiryInSeconds = Math.floor(new Date().getTime() / 1000);
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// Define headers
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const headers = {
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alg: "RS256",
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typ: "JWT",
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};
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// Define your payload
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const payload = {
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iss: fhirSettings.jwt.client_id,
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sub: fhirSettings.jwt.client_id,
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aud: fhirSettings.token_url,
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};
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// Define token options (optional)
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const options = {
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expiresIn: "4m", // Token expires in 1 hour
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notBefore: "0",
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algorithm: "RS384",
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keyid: "iva_id_1234",
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jwtid: uuidv5("jwtid", fhirSettings.jwt.uuid_namespace),
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};
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let data = qs.stringify({
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grant_type: "client_credentials",
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client_assertion_type:
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"urn:ietf:params:oauth:client-assertion-type:jwt-bearer",
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client_assertion: jwt.sign(
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payload,
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fhirSettings.jwt.privateKey,
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options
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),
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});
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let config = {
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method: "post",
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maxBodyLength: Infinity,
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url: fhirSettings.token_url,
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headers: {
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"Content-Type": "application/x-www-form-urlencoded",
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},
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data: data,
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};
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const result = await axios(config);
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if (result.status == 200) {
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expiryInSeconds += result.data.expires_in;
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console.log(
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`fhirInterface.getToken: Adding ${getRedisKey()} to redis with expiry=${new Date(
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expiryInSeconds * 1000
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)}`
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);
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await redis.hSet(getRedisKey(), "exp", expiryInSeconds);
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await redis.hSet(getRedisKey(), "token", JSON.stringify(result.data));
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resolve(result.data);
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} else {
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reject(result.status);
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}
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} catch (err) {
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console.log("fhirInterface.getToken: Error getting Token");
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console.log(err);
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if (err.response) {
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console.log(err.response.data); // => the response payload
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}
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reject(err);
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}
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});
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},
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};
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