7f3c2b1a-0e4d-4c5b-9a8f-1d2e3f4a5b60Integration API1America/TorontoToken cache, dispatch-time send, Retry-After pause and ACK classification for the integration API.false7f3c2b1a-0e4d-4c5b-9a8f-1d2e3f4a5b61ingestApi1America/TorontoDESTINATION_DISPATCHERCHANNEL_DEPLOYFUNCTION= 400 ? conn.getErrorStream() : conn.getInputStream();
} catch (e) {
stream = conn.getErrorStream();
}
if (stream === null) {
return '';
}
var out = new java.io.ByteArrayOutputStream();
var buffer = java.lang.reflect.Array.newInstance(java.lang.Byte.TYPE, 8192);
var total = 0;
var n;
while ((n = stream.read(buffer)) !== -1 && total < 1048576) {
out.write(buffer, 0, n);
total += n;
}
stream.close();
return new java.lang.String(out.toByteArray(), 'UTF-8');
}
/**
* An OAuth 2.0 client-credentials token, cached in the global map until 30 s before expiry.
* `forceRefresh` after a 401 token_expired / token_revoked.
*/
function ingestAccessToken(forceRefresh) {
var now = java.lang.System.currentTimeMillis();
var cached = globalMap.get('ingest.api.token');
if (!forceRefresh && cached !== null && cached !== undefined && cached.expiresAt - 30000 > now) {
return cached.value;
}
var url = new java.net.URL(ingestCfg('ingest.api.baseUrl') + '/oauth/token');
var conn = url.openConnection();
conn.setRequestMethod('POST');
conn.setDoOutput(true);
conn.setInstanceFollowRedirects(false);
conn.setConnectTimeout(10000);
conn.setReadTimeout(15000);
conn.setRequestProperty('Content-Type', 'application/x-www-form-urlencoded');
var basic = java.util.Base64.getEncoder().encodeToString(
new java.lang.String(
java.net.URLEncoder.encode(ingestCfg('ingest.api.clientId'), 'UTF-8') + ':' +
java.net.URLEncoder.encode(ingestCfg('ingest.api.clientSecret'), 'UTF-8')
).getBytes('UTF-8')
);
conn.setRequestProperty('Authorization', 'Basic ' + basic);
var form = 'grant_type=client_credentials&scope=' +
java.net.URLEncoder.encode(ingestCfg('ingest.api.scope'), 'UTF-8');
var writer = conn.getOutputStream();
writer.write(new java.lang.String(form).getBytes('UTF-8'));
writer.close();
var status = conn.getResponseCode();
var body = ingestReadBody(conn);
if (status !== 200) {
// Never log the body of a token response; the status and error code are enough.
var code = '';
try { code = JSON.parse(body).error; } catch (e) { code = 'unparseable'; }
throw 'Token endpoint answered ' + status + ' ' + code;
}
var token = JSON.parse(body);
globalMap.put('ingest.api.token', {
expiresAt: now + (token.expires_in * 1000),
value: token.access_token
});
return token.access_token;
}
/**
* Whether the channel is inside a Retry-After pause (a 503 or 429 answered earlier).
*/
function ingestPaused() {
var until = globalChannelMap.get('ingest.api.pauseUntil');
return until !== null && until !== undefined && java.lang.System.currentTimeMillis() < until;
}
function ingestPause(retryAfterHeader) {
var seconds = parseInt(retryAfterHeader, 10);
if (isNaN(seconds) || seconds < 1) {
seconds = 30;
}
globalChannelMap.put('ingest.api.pauseUntil', java.lang.System.currentTimeMillis() + Math.min(seconds, 3600) * 1000);
}
/**
* Sends one request at dispatch time. Returns { status, body, contentType, retryAfter }.
* A 401 token_expired or token_revoked refreshes the token once and resends the same request.
*/
function ingestSend(path, contentType, payload, idempotencyKey) {
var attempt = function (token) {
var url = new java.net.URL(ingestCfg('ingest.api.baseUrl') + path);
var conn = url.openConnection();
conn.setRequestMethod('POST');
conn.setDoOutput(true);
conn.setInstanceFollowRedirects(false);
conn.setConnectTimeout(10000);
conn.setReadTimeout(30000);
conn.setRequestProperty('Authorization', 'Bearer ' + token);
conn.setRequestProperty('Content-Type', contentType);
conn.setRequestProperty('User-Agent', ingestCfg('ingest.api.userAgent', true) || 'Mirth-Connect');
if (idempotencyKey) {
conn.setRequestProperty('Idempotency-Key', idempotencyKey);
}
var writer = conn.getOutputStream();
writer.write(new java.lang.String(payload).getBytes('UTF-8'));
writer.close();
var status = conn.getResponseCode();
return {
body: ingestReadBody(conn),
contentType: String(conn.getHeaderField('Content-Type') || ''),
retryAfter: conn.getHeaderField('Retry-After'),
status: status
};
};
var result = attempt(ingestAccessToken(false));
if (result.status === 401) {
var code = '';
try { code = JSON.parse(result.body).code; } catch (e) { code = ''; }
if (code === 'token_expired' || code === 'token_revoked' || code === 'invalid_token') {
result = attempt(ingestAccessToken(true));
}
}
return result;
}
/**
* MSA-1 of an ACK (AA, AE, AR, CA, CE, CR) or '' when there is none.
*/
function ingestAckCode(ack) {
var segments = String(ack).split(/\r\n|\r|\n/);
for (var i = 0; i < segments.length; i++) {
if (segments[i].indexOf('MSA') === 0) {
return segments[i].substring(4, 6);
}
}
return '';
}
/**
* Maps an API outcome to a Mirth Response. 503/429 pause and queue (never an error); AE/AR go
* to the error channel and never hold the queue; 2xx is SENT.
*/
function ingestResponse(result, errorChannelName) {
if (result.status === 503 || result.status === 429) {
ingestPause(result.retryAfter);
return new Response(QUEUED, '', 'Transient ' + result.status + '; retry after ' + result.retryAfter + ' s', '');
}
if (result.status >= 500) {
return new Response(QUEUED, '', 'Server error ' + result.status + '; queued for retry', '');
}
if (result.status >= 200 && result.status < 300) {
var ack = ingestAckCode(result.body);
if (ack === 'AE' || ack === 'AR') {
if (errorChannelName) {
router.routeMessage(errorChannelName, result.body);
}
return new Response(SENT, result.body, 'ACK ' + ack + ' routed to ' + errorChannelName, '');
}
return new Response(SENT, result.body, 'Accepted', '');
}
if (errorChannelName) {
router.routeMessage(errorChannelName, result.body);
}
return new Response(ERROR, result.body, 'Refused ' + result.status, '');
}
]]>