appdynamics/lib/core/otel-config.js

Performance Profiler and Monitor

/*
Copyright (c) AppDynamics, Inc., and its affiliates
2015
All Rights Reserved
 */

const { Resource } = require('@opentelemetry/resources');

module.exports = OtelConfig;

function OtelConfig(opts) {
  this.resourceAttributes = this.parseResourceAtributes();
  this.tierName = opts.tierName || process.env.APPDYNAMICS_AGENT_TIER_NAME;
  this.applicationName = opts.applicationName || process.env.APPDYNAMICS_AGENT_APPLICATION_NAME;
  this.accountName = opts.accountName || process.env.APPDYNAMICS_AGENT_ACCOUNT_NAME;
  this.DEPLOYMENT_ENVIRONMENT_NAME = "deployment.environment.name";
  this.SERVICE_NAME = "service.name";
  this.SERVICE_NAMESPACE = "service.namespace";
}

OtelConfig.prototype.parseResourceAtributes = function() {
  let resourceAttributes = {};
  if(process.env.OTEL_RESOURCE_ATTRIBUTES != null) {
    let parseResourceAttrs = process.env.OTEL_RESOURCE_ATTRIBUTES.split(',');
    for(const attr of parseResourceAttrs) {
      let pairs = attr.split('=');
      if(pairs.length == 2) {
        resourceAttributes[pairs[0]] = pairs[1];
      }
    }
  }
  return resourceAttributes;
};

OtelConfig.prototype.configResource = function() {
  let resource = {};
  this.updateServiceNamespace(this.resourceAttributes, resource);
  this.updateServiceName(this.resourceAttributes, resource);
  this.updateDeploymentEnviromentName(this.resourceAttributes, resource);
  return new Resource(resource);
};

OtelConfig.prototype.updateServiceNamespace = function(attrs, resource) {
  if(attrs[this.SERVICE_NAMESPACE] != null) {
    return;
  } else {
    resource[this.SERVICE_NAMESPACE] = this.applicationName;
  }
};

OtelConfig.prototype.updateServiceName = function(attrs, resource) {
  if(process.env['OTEL_SERVICE_NAME'] != null || attrs[this.SERVICE_NAME] != null) {
    return;
  } else {
    resource[this.SERVICE_NAME] = this.tierName;
  }
};

OtelConfig.prototype.updateDeploymentEnviromentName = function(attrs, resource) {
  if(attrs[this.DEPLOYMENT_ENVIRONMENT_NAME] != null) {
    return;
  } else {
    resource[this.DEPLOYMENT_ENVIRONMENT_NAME] = this.accountName;
  }
};