See #25317. PEP for Jerico
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# Added to load njs module
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load_module modules/ngx_http_js_module.so;
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user nginx;
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worker_processes auto;
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error_log /var/log/nginx/error.log notice;
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pid /var/run/nginx.pid;
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events {
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worker_connections 1024;
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}
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http {
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# added to import pep script
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js_import pep.js;
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# added to bind enforce function
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js_set $authorization pep.enforce;
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# added to create cache for tokens and auth calls
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proxy_cache_path /var/cache/nginx/pep keys_zone=token_responses:1m max_size=2m;
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include /etc/nginx/mime.types;
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default_type application/octet-stream;
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log_format main '$remote_addr - $remote_user [$time_local] "$request" '
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'$status $body_bytes_sent "$http_referer" '
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'"$http_user_agent" "$http_x_forwarded_for"';
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access_log /var/log/nginx/access.log main;
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sendfile on;
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#tcp_nopush on;
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keepalive_timeout 65;
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#gzip on;
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include /etc/nginx/conf.d/*.conf;
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}
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upstream service {
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ip_hash;
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server {{ jerico_docker_stack_name }}_{{ jerico_docker_catalogue_service_name }}:{{ jerico_catalogue_ui_port }};
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}
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# added to import pep script
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js_import pep.js;
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# added to bind enforce function
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js_set $authorization pep.enforce;
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# variables computed by njs and which may possibly be passed among locations
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js_var $auth_token;
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js_var $account_record;
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proxy_cache_path /tmp levels=1:2 keys_zone=social_cache:10m max_size=10g inactive=60m use_temp_path=off;
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server {
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listen *:80;
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listen [::]:80;
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server_name {{ bluecloud_jerico_service_host }};
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subrequest_output_buffer_size 200k;
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location /health {
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add_header Content-Length 0;
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add_header Content-Type "text/plain";
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return 200;
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}
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location / {
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proxy_read_timeout 300;
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proxy_send_timeout 300;
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js_content pep.enforce;
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}
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location /gcube_user_info {
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internal;
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gunzip on;
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proxy_method GET;
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proxy_http_version 1.1;
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proxy_set_header gcube-token "$auth_token";
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proxy_pass https://api.d4science.org/rest/2/people/profile;
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proxy_cache social_cache;
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proxy_cache_key $auth_token;
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}
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location /_backend {
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internal;
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proxy_read_timeout 300;
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proxy_send_timeout 300;
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resolver 146.48.122.10;
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proxy_http_version 1.1;
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proxy_set_header gcube-token "$auth_token";
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proxy_pass http://service$request_uri;
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}
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location /_accounting {
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internal;
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proxy_method POST;
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proxy_http_version 1.1;
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proxy_set_header gcube-token "$auth_token";
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proxy_set_header Content-Type "application/json";
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proxy_pass https://accounting-service.d4science.org/accounting-service/record;
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}
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}
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version: '3.6'
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services:
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pep-rel:
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image: nginx:stable-alpine
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networks:
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- {{ sobigdata_rel_docker_network }}
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- haproxy-public
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deploy:
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replicas: 1
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placement:
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constraints: [node.role == worker]
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endpoint_mode: dnsrr
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restart_policy:
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condition: on-failure
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delay: 10s
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window: 120s
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configs:
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- source: nginxconf
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target: /etc/nginx/templates/default.conf.template
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- source: nginxbaseconf
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target: /etc/nginx/nginx.conf
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- source: pep
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target: /etc/nginx/pep.js
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networks:
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{{ sobigdata_rel_docker_network }}:
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haproxy-public:
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external: true
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configs:
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nginxconf:
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file: ./nginx.default.conf
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nginxbaseconf:
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file: ./nginx.conf
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pep:
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file: ./pep.js
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export default { enforce };
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function log(c, s){
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c.request.error(s)
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}
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function debug(c, s){
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return {{ nginx_pep_debug_enabled }} ? c.request.error(s) : null
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}
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function enforce(r) {
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var context = {
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request: r
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}
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var allowedcontexts = ["{{ sobigdata_rel_authorized_scopes }}"]
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log(context, "Inside NJS enforce for " + r.method + " @ " + r.headersIn.host + "/" + r.uri)
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const token = getGCubeToken(context)
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if(token != null){
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debug(context, "[PEP] token is " + token)
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exportVariable(context, "auth_token", token)
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context.request.subrequest("/gcube_user_info")
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.then(reply=>{
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if (reply.status === 200) {
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debug(context, "[Social Service] got response " + reply.responseBody)
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var response = JSON.parse(reply.responseBody);
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if(allowedcontexts.indexOf(response.result.context) === -1){
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debug(context, "[PEP] Unathorized context " + response.result.context)
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throw new Error("Unauthorized")
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}
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return response
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} else {
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debug(context, "[Social Service] failed " + reply.status + ":" + reply.responseBody)
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throw new Error("Unauthorized")
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}
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}).then(userinfo => {
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debug(context, "[Social Service] username is " + userinfo.result.username)
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context.userinfo = userinfo
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context.record = buildAccountingRecord(context)
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return context.request.subrequest("/_backend", { method : context.request.method, args : context.request.args, headers : context.request.headersIn})
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}).then(reply=>{
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debug(context, "[REL] response status: " + reply.status)
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closeAccountingRecord(context.record, (reply.status === 200 || reply.status === 201 || reply.status === 204))
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context.request.subrequest("/_accounting", { detached : true, body : JSON.stringify([context.record]) })
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r.return(reply.status, reply.responseBody)
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}).catch(e => { log(context, "Error .... " + njs.dump(e)); context.request.return(e.message === "Unauthorized" ? 403 : 500)} )
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return
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}
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r.return(401, "Authorization required")
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}
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function getGCubeToken(context){
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if(context.request.args.token){
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return context.request.args.token;
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}else if (context.request.headersIn['gcube-token']){
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return context.request.headersIn['gcube-token'];
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}
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return null;
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}
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function buildAccountingRecord(context){
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const t = (new Date()).getTime()
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return {
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"recordType": "ServiceUsageRecord",
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"operationCount": 1,
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"creationTime": t,
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"callerHost": context.request.remoteAddress,
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"serviceClass": "Application",
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"callerQualifier": "TOKEN",
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"consumerId": context.userinfo.result.username,
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"aggregated": true,
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"serviceName": "REL",
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"duration": 0,
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"maxInvocationTime": 0,
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"scope": "{{ sobigdata_rel_authorized_scopes }}",
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"host": "{{ sobigdata_rel_service_host }}",
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"startTime": t,
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"id": uuid(),
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"calledMethod": context.request.method + " " + context.request.uri,
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"endTime": 0,
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"minInvocationTime": 0,
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"operationResult": null
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}
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}
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function closeAccountingRecord(record, success){
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const t = (new Date()).getTime()
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record.duration = t - record.startTime
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record.endTime = t
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record.minInvocationTime = record.duration
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record.operationResult = success ? "SUCCESS" : "FAILED";
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}
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function uuid() {
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return 'xxxxxxxx-xxxx-4xxx-8xxx-xxxxxxxxxxxx'.replace(/[x]/g, function (c) {
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const r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8);
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return v.toString(16);
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});
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}
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function exportVariable(context, name, value){
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context.request.variables[name] = value
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return context
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}
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