Incident Response Planning - Complete Guide

# Incident Response Implementation

class IncidentResponseSystem {
  constructor() {
    this.incidents = new Map();
    this.responseTeam = new ResponseTeam();
    this.escalationMatrix = new EscalationMatrix();
    this.communicationChannels = new CommunicationChannels();
  }
  
  createIncident(incidentData) {
    const incident = {
      id: this.generateIncidentId(),
      title: incidentData.title,
      description: incidentData.description,
      severity: incidentData.severity,
      status: 'open',
      createdAt: new Date(),
      assignedTo: null,
      resolution: null,
      timeline: []
    };
    
    this.incidents.set(incident.id, incident);
    this.initializeResponse(incident);
    return incident;
  }
  
  initializeResponse(incident) {
    this.assignIncidentOwner(incident);
    this.notifyStakeholders(incident);
    this.startResponseTimeline(incident);
  }
  
  assignIncidentOwner(incident) {
    const owner = this.responseTeam.getIncidentOwner(incident.severity);
    incident.assignedTo = owner;
    incident.timeline.push({
      action: 'assigned',
      user: owner,
      timestamp: new Date(),
      description: `Incident assigned to ${owner.name}`
    });
  }
  
  notifyStakeholders(incident) {
    const stakeholders = this.getStakeholders(incident.severity);
    this.communicationChannels.notify(stakeholders, incident);
  }
  
  startResponseTimeline(incident) {
    incident.timeline.push({
      action: 'response_started',
      timestamp: new Date(),
      description: 'Incident response initiated'
    });
  }
  
  getStakeholders(severity) {
    const stakeholders = {
      'critical': ['CTO', 'VP Engineering', 'On-call Engineer', 'Product Manager'],
      'high': ['Engineering Manager', 'On-call Engineer', 'Product Manager'],
      'medium': ['On-call Engineer', 'Team Lead'],
      'low': ['On-call Engineer']
    };
    
    return stakeholders[severity] || stakeholders['medium'];
  }
  
  generateIncidentId() {
    const count = this.incidents.size + 1;
    return `INC-${count.toString().padStart(4, '0')}`;
  }
  
  updateIncidentStatus(incidentId, status, update) {
    const incident = this.incidents.get(incidentId);
    if (incident) {
      incident.status = status;
      incident.timeline.push({
        action: 'status_update',
        timestamp: new Date(),
        description: update.description,
        user: update.user
      });
      
      if (status === 'resolved') {
        incident.resolvedAt = new Date();
        this.completeIncident(incident);
      }
    }
  }
  
  completeIncident(incident) {
    incident.timeline.push({
      action: 'incident_completed',
      timestamp: new Date(),
      description: 'Incident response completed'
    });
    
    this.schedulePostMortem(incident);
  }
  
  schedulePostMortem(incident) {
    const postMortem = {
      incidentId: incident.id,
      scheduledFor: new Date(Date.now() + 24 * 60 * 60 * 1000), // 24 hours later
      participants: this.getPostMortemParticipants(incident),
      status: 'scheduled'
    };
    
    this.schedulePostMortemMeeting(postMortem);
  }
  
  getPostMortemParticipants(incident) {
    return [
      incident.assignedTo,
      ...this.getStakeholders(incident.severity),
      'Incident Response Lead'
    ];
  }
}

class ResponseTeam {
  constructor() {
    this.members = new Map();
    this.onCallSchedule = new OnCallSchedule();
  }
  
  getIncidentOwner(severity) {
    const onCall = this.onCallSchedule.getCurrentOnCall();
    
    if (severity === 'critical') {
      return this.getEscalatedOwner(onCall);
    }
    
    return onCall;
  }
  
  getEscalatedOwner(onCall) {
    // Return manager or senior engineer for critical incidents
    return this.members.get('senior_engineer') || onCall;
  }
}

class EscalationMatrix {
  constructor() {
    this.matrix = {
      'critical': {
        '5min': 'Engineering Manager',
        '15min': 'VP Engineering',
        '30min': 'CTO',
        '60min': 'CEO'
      },
      'high': {
        '15min': 'Engineering Manager',
        '30min': 'VP Engineering',
        '60min': 'CTO'
      },
      'medium': {
        '30min': 'Team Lead',
        '60min': 'Engineering Manager'
      },
      'low': {
        '60min': 'Team Lead'
      }
    };
  }
  
  getEscalationTarget(severity, timeElapsed) {
    const escalation = this.matrix[severity];
    if (!escalation) return null;
    
    const thresholds = Object.keys(escalation).sort((a, b) => parseInt(a) - parseInt(b));
    
    for (const threshold of thresholds) {
      if (timeElapsed >= parseInt(threshold)) {
        return escalation[threshold];
      }
    }
    
    return null;
  }
}

class CommunicationChannels {
  constructor() {
    this.channels = {
      slack: new SlackChannel(),
      email: new EmailChannel(),
      phone: new PhoneChannel(),
      pagerduty: new PagerDutyChannel()
    };
  }
  
  notify(stakeholders, incident) {
    const message = this.createIncidentMessage(incident);
    
    stakeholders.forEach(stakeholder => {
      this.channels.slack.send(stakeholder, message);
      this.channels.email.send(stakeholder, message);
      
      if (incident.severity === 'critical') {
        this.channels.pagerduty.alert(stakeholder, incident);
      }
    });
  }
  
  createIncidentMessage(incident) {
    return {
      title: `Incident Alert: ${incident.title}`,
      body: `Severity: ${incident.severity}\nDescription: ${incident.description}\nIncident ID: ${incident.id}`,
      priority: incident.severity,
      timestamp: incident.createdAt
    };
  }
}