Author: adm

PriMus-K Tips: Faster Estimating and Bill of Quantities

Overview

PriMus-K is a cost-estimating and bill-of-quantities tool used in construction project pricing. These tips focus on speeding up routine tasks, improving accuracy, and producing clearer bills of quantities (BOQs).

1. Set up templates and master items

• Create standardized templates for common project types (residential, commercial, civil) so page layout, headings, and default units are preconfigured.
• Build a master item library with frequently used work items, descriptions, units, and default rates to avoid re-entering data.

2. Use hierarchical item grouping

• Organize items into work packages and subpackages to speed navigation and subtotaling.
• Apply consistent numbering schemes so cross-references and imports/exports align with other project documents.

3. Leverage import/export features

• Import drawings’ takeoffs or measurement sheets (CSV, XLSX) to populate quantities instead of manual entry.
• Export BOQs to Excel or PDF with preset layouts for quick delivery to clients or contractors.

4. Master formulas and unit-cost linking

• Link unit rates to cost databases so updating a rate recalculates all dependent items automatically.
• Use formulas for compound items (e.g., area × thickness × density) to reduce manual calculations and errors.

5. Use filters, views, and bookmarks

• Create custom views (e.g., by trades, by phase) to focus on specific parts of the BOQ quickly.
• Apply filters to show only items missing rates or with zero quantities.
• Bookmark critical sections to jump rapidly during reviews.

6. Bulk edit and mass operations

• Use multi-select edits to change units, rates, or descriptions across many items at once.
• Apply percentage adjustments to groups for rapid contingency or escalation modeling.

7. Maintain a versioned cost database

• Keep dated cost records so you can revert to or compare historical rates.
• Tag rate changes with notes explaining source (supplier quote, index update) for auditability.

8. Improve accuracy with validation checks

• Run consistency checks to flag mismatched units, negative quantities, or unpriced items.
• Cross-verify totals against summary sheets and client budgets before finalizing.

9. Automate repetitive documentation

• Create report templates (cover letters, executive summaries, assumptions) that pull data from the BOQ automatically.
• Configure standard disclaimers and measurement notes to be appended to every deliverable.

10. Train and document workflows

• Write short SOPs for common tasks (creating a new BOQ, importing quantities, applying rate updates).
• Share quick-reference cheat sheets for keyboard shortcuts and frequent workflows to accelerate team productivity.

Quick checklist before delivery

• Ensure all items have rates and quantities.
• Run validation and consistency checks.
• Update cost database to current rates.
• Export BOQ in client-required format and include assumptions/notes.

If you want, I can turn this into a printable one-page cheat sheet or a step-by-step SOP for your team—tell me which format you prefer.

Building a Secure Pharmacy Management System: Best Practices and Case Studies

Overview

A secure Pharmacy Management System (PMS) manages prescriptions, inventory, patient records, billing, and regulatory compliance. Security must protect patient data, prevent fraud, ensure availability, and maintain integrity of medication records.

Core security best practices

1. Access control
   • Role-based access: enforce least privilege for pharmacists, technicians, admins, clinicians.
   • Multi-factor authentication (MFA): require MFA for all privileged accounts.
2. Data protection
   • Encryption at rest and in transit: use AES-256 for storage and TLS 1.2+ for network traffic.
   • Field-level encryption: encrypt sensitive fields (patient identifiers, Rx details).
3. Auditability and logging
   • Immutable audit logs: record all access/changes with timestamps, user IDs, and actions.
   • Regular review: automated alerts for suspicious activity and periodic manual audits.
4. Secure development lifecycle
   • Threat modeling: identify attack surfaces (APIs, integrations, mobile clients).
   • Static/Dynamic testing: SAST and DAST during development; regular dependency scanning.
   • Vulnerability disclosure: maintain a bug-bounty or coordinated vulnerability disclosure channel.
5. Network and infrastructure security
   • Segmentation: separate front-end, application, database, and backup networks.
   • WAF and IDS/IPS: protect against common web attacks and intrusion attempts.
   • Hardened configurations: minimal services, secure defaults, patch management.
6. Data integrity and backups
   • Regular backups: encrypted, versioned, and stored offsite with tested restore procedures.
   • Checksums/signing: detect tampering of critical records.
7. Compliance and privacy
   • Regulatory mapping: meet HIPAA (US), GDPR (EU) or local regulations as applicable.
   • Retention and disposal policies: enforce secure deletion when records expire.
8. Third-party and API security
   • Least-privilege API keys and scoped tokens.
   • Contractual and technical controls for vendors handling PHI.
9. User training and operational controls
   • Phishing and security awareness: regular training for staff handling prescriptions and payments.
   • Incident response plan: rehearsed playbooks for breaches, ransomware, and mis-dispensation events.

Implementation checklist (practical steps)

1. Conduct risk assessment and map data flows.
2. Define roles and RBAC matrix.
3. Implement MFA, strong password policies, and session timeout.
4. Deploy encryption (TLS + DB encryption) and field-level protections.
5. Set up centralized logging, SIEM, and alerting.
6. Harden servers, apply patches, and schedule vulnerability scans.
7. Create backup/restore runbooks and test restores quarterly.
8. Draft privacy policy, consent flows, and compliance documentation.
9. Run penetration tests before production launch and annually.
10. Train staff and run incident response tabletop exercises.

Short case studies (concise)

• Large hospital pharmacy — inventory integrity
  • Problem: Frequent stock discrepancies and expired medications.
  • Solution: Implemented barcode scanning integrated with PMS, daily reconciliation scripts, and automated alerts for expirations.
  • Outcome: 40% reduction in stock variance and near-zero expired-dispense incidents.
• Community chain — POS and billing fraud
  • Problem: Unauthorized discounts and altered prescriptions at point-of-sale.
  • Solution: Role-restricted POS actions, mandatory pharmacist approval workflows, and signed audit trails.
  • Outcome: Fraud incidents dropped by 85%; auditability improved for insurers.
• Cloud-first startup — secure telepharmacy
  • Problem: Securely transmitting prescriptions and patient data between remote clinicians and pharmacies.
  • Solution: End-to-end encryption, tokenized patient IDs, strict API scopes, and contractual vendor controls.
  • Outcome: Secure remote dispensing with regulatory approval and fast scalability.

Metrics to track security effectiveness

• Number of unauthorized access attempts blocked
• Time-to-detect and time-to-contain incidents
• Percentage of systems patched within SLAs
• Audit log coverage and tamper-detection alerts
• Backup success rate and restore time

Final recommendations

• Prioritize patient safety and data integrity alongside confidentiality.
• Build security into design, not as an afterthought.
• Treat operational controls (training, audits, response plans) as equally important as technical controls.

If you want, I can expand any section into implementation templates (RBAC matrix, incident playbook, encryption checklist) or draft sample audit log formats.

Exalead One:Desktop vs. Competitors — Which Search Desktop Wins?

Introduction Exalead One (desktop variant of EXALEAD OnePart/One) is an enterprise-focused desktop search and parts‑reuse tool built on Dassault Systèmes’ EXALEAD CloudView technology. It targets engineering, product data and knowledge discovery by indexing CAD files, PDM/PLM systems, file shares and related documentation. Competitors include Sinequa, Coveo, Lucidworks, Algolia, Coveo, and specialist CAD/PLM search tools (e.g., Teamcenter search, XSB, and custom PDM search modules). Below I compare strengths, weaknesses, typical use cases, and pick winners by category.

Key evaluation criteria

• Search relevance & ranking (text, metadata, semantic)
• Engineering/CAD support (shape/3D search, feature mining, CAD-agnostic indexing)
• Integration (PDM/PLM, ERP, file systems, cloud sources)
• Scalability & performance (index size, query latency)
• Deployment & management (on‑prem vs cloud, admin tooling)
• Analytics & UX (filters, side‑by‑side comparators, dashboards)
• Extensibility & AI (semantic vector search, LLM/GPT integration)
• Cost & TCO (licensing, implementation effort, ops)

How Exalead One:Desktop compares

• Search relevance & ranking

  • Strengths: Strong enterprise relevance scoring and metadata blending from CloudView; good autocomplete and faceted filters.
  • Limits vs competitors: Modern vector/semantic ranking and LLM retrieval-augmented features from Lucidworks, Algolia and Coveo are often more advanced for natural‑language conversational queries.

• Engineering/CAD support

  • Strengths: Built‑in 3D/shape search, mechanical feature mining, CAD‑agnostic indexing and side‑by‑side comparisons — superior for CAD/part reuse.
  • Competitor gap: Few general search platforms match Exalead’s domain‑specific CAD capabilities without heavy customization.

• Integration

  • Strengths: Native connectors for many PDM/PLM systems (SOLIDWORKS PDM, ENOVIA, file systems, databases).
  • Competitors: Lucidworks/Coveo/Algolia excel at web/app search connectors and modern cloud stacks; enterprise specialists (Sinequa) match Exalead on broad enterprise connectors.

• Scalability & performance

  • Strengths: Designed for large enterprise indexes; CloudView heritage handles big datasets.
  • Competitors: Lucidworks/Sinequa provide proven large‑scale search clusters and cloud elasticity; Algolia shines for low‑latency consumer/web search at scale.

• Deployment & management

  • Strengths: Often deployed on‑prem for IP safety in engineering organizations; good governance for PDM data.
  • Competitors: Algolia/Coveo favor cloud/SaaS ease; Lucidworks offers both cloud and on‑prem flexibility.

• Analytics & UX

  • Strengths: Analytics views for part‑usage, contribution stats, and configurable KPIs; helpful side‑by‑side part comparison UI.
  • Competitors: Coveo and Lucidworks provide advanced behavioral analytics, A/B experimentation and modern dashboards for business users.

• Extensibility & AI

  • Strengths: Solid search platform with enterprise rules and scripted enrichments.
  • Competitors: Lucidworks, Coveo, and Algolia have stronger out‑of‑the‑box vector search, embeddings and LLM integrations for conversational search and generative answers.

• Cost & TCO

  • Strengths: Effective where CAD/engineering reuse yields clear ROI (reduced duplicate parts, faster design cycles).
  • Considerations: Total cost depends on connectors, customization and indexing complexity; cloud‑native competitors may deliver lower operational overhead for non‑engineering use cases.

Best fit / recommended winners by use case

• Best for engineering teams and CAD/parts reuse: Exalead One wins. Its shape search, CAD‑agnostic indexing, feature mining and side‑by‑side comparisons are purpose‑built for engineers and manufacturers.

• Best for enterprise knowledge discovery across mixed business data (legal, HR, customer support, docs): Sinequa or Lucidworks win. They provide broad semantic search, multilingual NLP and strong enterprise connectors for diverse workloads.

• Best for e‑commerce, web/app low‑latency search and product discovery: Algolia or Coveo win. They excel at relevance tuning, instant search UX and conversion‑focused analytics.

• Best for hybrid needs (enterprise scale + modern AI features): Lucidworks is often the pragmatic winner—scalable, extensible, and with advanced ML/vector capabilities.

Implementation considerations

• If your primary goal is reducing duplicate engineering work and accelerating reuse, prioritize Exalead One and validate connectors to your PDM/PLM, CAD formats and file shares. Measure expected ROI from part reuse and reduced procurement.
• If you need natural‑language conversational search or generative answers across business units, evaluate Lucidworks/Coveo/Algolia pilots with vector/LLM features.
• For mixed needs, consider a hybrid architecture: Exalead for CAD/PDM search plus a complementary platform (Lucidworks/Coveo) for corporate knowledge and customer‑facing search, with a federated search layer or unified front end.

Short checklist before choosing

1. Inventory data sources (CAD types, PDM systems, file shares, databases).
2. Define primary users and queries (engineers: shape+metadata vs. knowledge workers: NL queries).
3. Pilot with representative datasets (include 3D models if relevant).
4. Measure relevance, latency, admin effort and integration complexity.
5. Compare total cost including customization and ongoing ops.

Conclusion For manufacturing and engineering organizations focused on CAD/part reuse, Exalead One:Desktop is the clear winner because of its domain‑specific features (3D/shape search, feature mining, PDM integrations and analytics). For broader enterprise knowledge discovery, customer‑facing product search, or LLM‑driven conversational experiences, modern platforms like Lucidworks, Coveo or Algolia are superior. Many organizations benefit from using Exalead for engineering search and a complementary platform for other enterprise search needs.

How to Apply the YM Multi Messenger Patch — Step‑by‑Step Tutorial

Before you start

• Backup: Save any important chats, settings, and configuration files from YM Multi Messenger.
• Source: Download the patch only from the official project page or a trusted mirror.
• Compatibility: Ensure the patch version matches your YM Multi Messenger version and your OS.

Step 1 — Download the patch

1. Open the official project page or trusted mirror.
2. Download the patch file (usually named like ym-multi-messenger-patch-vX.Y.zip or .exe).

Step 2 — Verify the file

1. Check the file size and filename against the site’s listing.
2. If a checksum (MD5/SHA256) is provided, verify it:

bash
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sha256sum ym-multi-messenger-patch-vX.Y.zip 

Step 3 — Prepare the application

1. Close YM Multi Messenger fully (check system tray).
2. If the app runs as a service, stop the service.
3. Note any custom plugins or themes; copy them aside if needed.

Step 4 — Apply the patch

Option A — Installer (.exe):

1. Run the installer as Administrator (Windows) or with appropriate privileges.
2. Follow on-screen prompts, accepting defaults unless you need custom paths.
3. Restart the app after installation.

Option B — Manual patch (.zip or diff):

1. Extract the archive to a temporary folder.
2. Follow included README for exact file replacements. Typically:
   • Replace binary/executable files in the app folder.
   • Merge configuration or plugin folders as instructed.
3. Preserve file permissions when copying (use sudo or Administrator as needed).

Step 5 — Post-patch checks

1. Start YM Multi Messenger.
2. Verify version number in About or Settings matches the patch.
3. Test core functions: login, sending messages, contacts list, plugins.

Step 6 — Troubleshooting

• If the app won’t start: restore from backup, check logs for errors, reinstall previous version.
• If plugins or themes break: restore saved copies or reinstall compatible versions.
• If permissions errors occur: ensure files have correct ownership and execute permissions.

Rollback (if needed)

1. Restore the backup files you created before patching.
2. If you used a system restore point or package manager, roll back using that tool.

Quick safety tips

• Patch only from trusted sources.
• Keep a full backup before making changes.
• Apply patches in maintenance windows for production environments.

If you want, I can generate exact commands for your OS (Windows/macOS/Linux) or a checklist you can print—tell me which OS.

From Novice to Testing Master: A Practical Roadmap

Overview

A concise, step-by-step guide for software testers to progress from beginner to advanced practitioner, focusing on practical skills, tools, and career development.

12‑month roadmap (assumes part‑time learning ~6–8 hours/week)

Recommended weekly routine

• 3 hours hands-on practice (coding, tools)
• 2 hours reading/tutorials or courses
• 1 hour on community (forums, code reviews)
• 1 hour reflection: journaling bugs, lessons learned

Essential tools & resources

• Version control: Git
• CI/CD: GitHub Actions, GitLab CI
• Automation: Playwright, Selenium
• API: Postman, RestAssured
• Performance: k6, JMeter
• Security: OWASP ZAP
• Learning: Pluralsight/LinkedIn Learning, official docs, testing blogs

Practical exercises (progressive)

1. Write 20 concise test cases for a todo app.
2. Do 3 exploratory sessions (60 min each) and report findings.
3. Automate 5 end-to-end flows with Playwright.
4. Create API tests validating schema and error handling.
5. Run a load test simulating 100 concurrent users and analyze results.

Metrics to track progress

• Tests written/automated per week
• Defect quality (reproducible, well-described)
• Test flakiness rate (%)
• Time to detect and verify bugs

Quick tips

• Automate only stable, repeatable tests.
• Prioritize critical user journeys.
• Keep tests maintainable and fast.
• Learn by fixing flaky tests — high ROI.

7 ESContainer Use Cases Every DevOps Team Should Know

ElasticSearch has become a backbone for search and analytics in modern applications, but managing its lifecycle—deployment, scaling, monitoring, and backup—adds complexity. ESContainer is a containerized solution that simplifies running ElasticSearch by packaging best practices for configuration, scaling, and observability. Below are seven practical use cases where ESContainer can save DevOps teams time and reduce operational risk.

1. Development and QA Environments

• Why it helps: Provides reproducible, lightweight ElasticSearch instances developers and QA engineers can spin up locally or in CI pipelines.
• How to use: Include ESContainer in CI jobs to run integration tests against a consistent ES version and configuration. Use ephemeral containers to run test suites in isolation.
• Benefit: Faster feedback cycles, fewer environment-specific bugs.

2. Staging Mirror of Production

• Why it helps: Mirrors production topology and configuration to validate upgrades, configuration changes, or cluster topology adjustments before hitting production.
• How to use: Deploy ESContainer with the same node counts, resource limits, and plugins as production, but with sampled or scrubbed production data.
• Benefit: Reduces risk from schema changes, mapping updates, or performance regressions.

3. Autoscaling for Burst Traffic

• Why it helps: Handles variable search and indexing loads by scaling container replicas and coordinating shard allocation.
• How to use: Pair ESContainer with Kubernetes Horizontal Pod Autoscaler and custom metrics (e.g., indexing rate, CPU, JVM memory pressure). Use node labels and affinity rules to maintain shard distribution.
• Benefit: Cost-efficient resource usage and improved resilience under spikes.

4. Multi-Cluster Deployment for Multi-Tenancy

• Why it helps: Isolates tenant workloads using separate ESContainer clusters or namespaces to prevent noisy-neighbor issues and enable tenant-specific tuning.
• How to use: Automate provisioning of per-tenant ESContainer clusters with templated index settings and quotas. Use centralized control-plane tooling for lifecycle and access controls.
• Benefit: Stronger isolation, predictable performance, and easier billing or quotas per tenant.

5. Observability Stack Backend

• Why it helps: Serves as the storage and search engine for logs, metrics, and traces when paired with log shippers and visualization tools.
• How to use: Deploy ESContainer as part of an observability stack with Beats/Logstash (or Fluentd) and Kibana (or OpenSearch Dashboards). Tune index lifecycle management (ILM) to manage retention and optimize storage.
• Benefit: Scalable, searchable observability data with lifecycle policies to control costs.

6. Rapid Proof-of-Concepts and Prototyping

• Why it helps: Quickly validates search features, relevance tuning, and custom analyzers without long provisioning cycles.
• How to use: Spin up ESContainer instances with preloaded sample datasets and experiment with mappings, analyzers, and query profiles. Snapshot and share container configurations for team collaboration.
• Benefit: Accelerates prototyping and stakeholder feedback loops.

7. Disaster Recovery and Backup Testing

• Why it helps: Validates backup/restore procedures and failover strategies in an isolated environment using container snapshots and volume replicas.
• How to use: Use ESContainer snapshots to object storage (S3-compatible) and simulate node failures or zone outages. Test restore procedures against staged clusters to ensure RTO/RPO targets are met.
• Benefit: Confidence in recovery processes and minimized downtime during real incidents.

Best Practices when using ESContainer

• Configuration as code: Store container configs, index templates, and ILM policies in version control.
• Resource limits: Set CPU and memory requests/limits and tune JVM heap to ~50% of pod memory.
• Monitoring: Export JVM, GC, disk, and indexing metrics; alert on cluster status and shard relocations.
• Security: Enable TLS, RBAC, and secure snapshot repositories.
• ILM & retention: Use lifecycle policies to automate rollovers and cold storage transitions.

These seven use cases show how ESContainer fits into the DevOps lifecycle—from dev/test workflows to production scaling and disaster recovery. Adopt configuration-as-code and observability early to get the most consistent, reliable outcomes.

Magico Chart Comparison: Versions, Tools, and Best Alternatives

What is a Magico Chart?

A Magico Chart is a visual analysis tool used to display and compare multidimensional data in a compact, often circular or radial layout. It’s designed to highlight relationships, magnitudes, and patterns across multiple variables, making it useful for performance dashboards, competitive comparisons, and exploratory data analysis.

Common Versions and Variants

1. Classic Radial Magico

   • Use: General-purpose multi-variable comparison.
   • Strengths: Easy to spot high/low values, compact.
   • Weaknesses: Can be cluttered with many variables.

2. Layered Magico

   • Use: Time series or scenario comparison (layers for different periods).
   • Strengths: Visualizes change across time or conditions.
   • Weaknesses: Overlapping layers reduce clarity if too many layers.

3. Segmented Magico

   • Use: Categorical breakdowns with grouped segments.
   • Strengths: Clear categorical comparisons.
   • Weaknesses: Not ideal for continuous variables.

4. Interactive Magico

   • Use: Web dashboards and exploratory tools.
   • Strengths: Hover details, filtering, and dynamic scaling.
   • Weaknesses: Requires JavaScript libraries and more development effort.

5. Simplified Magico

   • Use: Presentations and reports where clarity is critical.
   • Strengths: Minimalist, easy to interpret.
   • Weaknesses: Sacrifices depth for readability.

Tools to Create Magico Charts

• D3.js

  • Best for: Custom, interactive visualizations.
  • Pros: Full control, performant.
  • Cons: Steep learning curve.

• Plotly / Dash

  • Best for: Interactive charts with less code than D3.
  • Pros: Interactivity, Python/JavaScript bindings.
  • Cons: Larger bundle size; some features behind paywall.

• Chart.js

  • Best for: Lightweight web integrations.
  • Pros: Simpler API, good defaults.
  • Cons: Less flexible for custom magico variants.

• Tableau

  • Best for: Drag-and-drop business analytics.
  • Pros: Quick prototyping, strong dashboarding.
  • Cons: Less customizable visuals; licensing cost.

• Power BI

  • Best for: Enterprise reporting.
  • Pros: Integrates with Microsoft ecosystem.
  • Cons: Custom visuals require development.

• Python (Matplotlib / Seaborn)

  • Best for: Static charts in reports and reproducible analysis.
  • Pros: Familiar to data scientists, scriptable.
  • Cons: Interactivity is limited without extra tools.

• R (ggplot2 / plotly)

  • Best for: Statistical graphics and reproducible research.
  • Pros: Grammar of graphics, extensible.
  • Cons: Custom radial layouts need careful coding.

How to Choose the Right Version and Tool

• If you need interactivity: Prefer D3.js or Plotly/Dash.
• If you want rapid prototyping: Use Tableau or Chart.js.
• If you produce static reports: Use Matplotlib, Seaborn, or ggplot2.
• If you require enterprise integration: Consider Power BI or Tableau.
• If you need maximum customization: D3.js is the most flexible.

Best Alternatives to Magico Charts

• Radar (Spider) Charts
  • Similar multi-axis layout; well-supported in many libraries.
• Parallel Coordinates
  • Better for high-dimensional continuous data; easier to spot correlations.
• Small Multiples
  • Multiple simple charts for different variables or segments; improves comparability.
• Heatmaps
  • Good for dense value matrices and spotting clusters.
• Stacked Bar / Area Charts
  • Better for showing parts-of-whole and trends over time.
• Sankey Diagrams
  • Use when relationships or flows between categories are primary.

Practical Tips for Effective Magico Charts

• Limit variables to 5–12 for readability.
• Use consistent scales across comparisons.
• Prefer interactivity when presenting many variables.
• Label clearly—include tooltips or data labels for precise values.
• Avoid color overload; use color to encode categories, not every variable.
• Provide a plain alternative view (e.g., table or small multiple) for accessibility.

Conclusion

Magico charts are powerful for multi-variable visuals but can be misused when overloaded or when interactivity is lacking. Choose the variant and tool that match your audience’s needs: interactive web tools for exploration, BI platforms for enterprise dashboards, and static libraries for reports. Consider alternatives like radar charts, parallel coordinates, or small multiples when they better fit the data story.

Simple C# 1Brocker API Program — Step-by-Step Guide

Overview

A Simple C# 1Brocker API Program shows how to connect to the 1Brocker trading/API service (assumed REST or WebSocket), authenticate, make basic requests (get market data, place an order, check order status), and handle responses and errors. The guide below assumes a REST API with JSON over HTTPS and uses HttpClient in .NET.

Prerequisites

• Tooling: .NET 6+ SDK, IDE (Visual Studio / VS Code).
• Libraries: System.Net.Http (built-in). Optionally Newtonsoft.Json or System.Text.Json for JSON.
• Credentials: API key and secret from 1Brocker (store securely; don’t hardcode).

Project setup

1. Create a console app:

   bash
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   dotnet new console -n OneBrockerClient cd OneBrockerClient 

2. Add JSON library (optional):

   bash
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   dotnet add package Newtonsoft.Json 

Authentication pattern (example)

• Many trading APIs use API key + secret with HMAC signature or Bearer tokens.
• Example HMAC header creation (pseudocode):
  • Create message = method + path + timestamp + body
  • signature = HMACSHA256(secret, message)
  • Send headers: API-Key, Timestamp, Signature

csharp
 ffON2NH02oMAcqyoh2UU MQCbz04ET5EljRmK3YpQ CPXAhl7VTkj2dHDyAYAf” data-copycode=“true” role=“button” aria-label=“Copy Code”>Copy CodeCopied
using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;
using Newtonsoft.Json;

class OneBrockerClient
{
private readonly HttpClient _http;
    private readonly string _apiKey;
    private readonly string _apiSecret;
    private readonly string _baseUrl = “https://api.1brocker.example”; // replace with real base

    public OneBrockerClient(string apiKey, string apiSecret)
    {
        _apiKey = apiKey;
        _apiSecret = apiSecret;
        _http = new HttpClient();
        _http.BaseAddress = new Uri(_baseUrl);
        _http.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue(“application/json”));
    }

    private string Sign(string method, string path, string timestamp, string body)
    {
        var message = \("</span><span class="token interpolation-string interpolation" style="color: rgb(57, 58, 52);">{</span><span class="token interpolation-string interpolation expression language-csharp">method</span><span class="token interpolation-string interpolation" style="color: rgb(57, 58, 52);">}</span><span class="token interpolation-string interpolation" style="color: rgb(57, 58, 52);">{</span><span class="token interpolation-string interpolation expression language-csharp">path</span><span class="token interpolation-string interpolation" style="color: rgb(57, 58, 52);">}</span><span class="token interpolation-string interpolation" style="color: rgb(57, 58, 52);">{</span><span class="token interpolation-string interpolation expression language-csharp">timestamp</span><span class="token interpolation-string interpolation" style="color: rgb(57, 58, 52);">}</span><span class="token interpolation-string interpolation" style="color: rgb(57, 58, 52);">{</span><span class="token interpolation-string interpolation expression language-csharp">body</span><span class="token interpolation-string interpolation" style="color: rgb(57, 58, 52);">}</span><span class="token interpolation-string" style="color: rgb(163, 21, 21);">"</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span><span>        </span><span class="token" style="color: rgb(0, 0, 255);">using</span><span> </span><span class="token" style="color: rgb(0, 0, 255);">var</span><span> hmac </span><span class="token" style="color: rgb(57, 58, 52);">=</span><span> </span><span class="token" style="color: rgb(0, 0, 255);">new</span><span> </span><span class="token constructor-invocation" style="color: rgb(43, 145, 175);">HMACSHA256</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span>Encoding</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span>UTF8</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">GetBytes</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span>_apiSecret</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span><span>        </span><span class="token" style="color: rgb(0, 0, 255);">var</span><span> sig </span><span class="token" style="color: rgb(57, 58, 52);">=</span><span> hmac</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">ComputeHash</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span>Encoding</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span>UTF8</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">GetBytes</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span>message</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span><span>        </span><span class="token" style="color: rgb(0, 0, 255);">return</span><span> Convert</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">ToBase64String</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span>sig</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span><span>    </span><span class="token" style="color: rgb(57, 58, 52);">}</span><span> </span> <span>    </span><span class="token" style="color: rgb(0, 0, 255);">private</span><span> </span><span class="token return-type" style="color: rgb(0, 0, 255);">void</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">AddAuthHeaders</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(43, 145, 175);">HttpRequestMessage</span><span> req</span><span class="token" style="color: rgb(57, 58, 52);">,</span><span> </span><span class="token" style="color: rgb(0, 0, 255);">string</span><span> body </span><span class="token" style="color: rgb(57, 58, 52);">=</span><span> </span><span class="token" style="color: rgb(163, 21, 21);">""</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span> </span><span>    </span><span class="token" style="color: rgb(57, 58, 52);">{</span><span> </span><span>        </span><span class="token" style="color: rgb(0, 0, 255);">var</span><span> ts </span><span class="token" style="color: rgb(57, 58, 52);">=</span><span> DateTimeOffset</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span>UtcNow</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">ToUnixTimeSeconds</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">ToString</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span><span>        </span><span class="token" style="color: rgb(0, 0, 255);">var</span><span> sig </span><span class="token" style="color: rgb(57, 58, 52);">=</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">Sign</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span>req</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span>Method</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span>Method</span><span class="token" style="color: rgb(57, 58, 52);">,</span><span> req</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span>RequestUri</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span>PathAndQuery</span><span class="token" style="color: rgb(57, 58, 52);">,</span><span> ts</span><span class="token" style="color: rgb(57, 58, 52);">,</span><span> body</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span><span>        req</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span>Headers</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">Add</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(163, 21, 21);">"API-Key"</span><span class="token" style="color: rgb(57, 58, 52);">,</span><span> _apiKey</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span><span>        req</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span>Headers</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">Add</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(163, 21, 21);">"Timestamp"</span><span class="token" style="color: rgb(57, 58, 52);">,</span><span> ts</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span><span>        req</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span>Headers</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">Add</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(163, 21, 21);">"Signature"</span><span class="token" style="color: rgb(57, 58, 52);">,</span><span> sig</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span><span>    </span><span class="token" style="color: rgb(57, 58, 52);">}</span><span> </span> <span>    </span><span class="token" style="color: rgb(0, 0, 255);">public</span><span> </span><span class="token" style="color: rgb(0, 0, 255);">async</span><span> </span><span class="token return-type" style="color: rgb(43, 145, 175);">Task</span><span class="token return-type" style="color: rgb(57, 58, 52);"><</span><span class="token return-type" style="color: rgb(0, 0, 255);">string</span><span class="token return-type" style="color: rgb(57, 58, 52);">></span><span> </span><span class="token" style="color: rgb(57, 58, 52);">GetTickerAsync</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(0, 0, 255);">string</span><span> symbol</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span> </span><span>    </span><span class="token" style="color: rgb(57, 58, 52);">{</span><span> </span><span>        </span><span class="token" style="color: rgb(0, 0, 255);">var</span><span> path </span><span class="token" style="color: rgb(57, 58, 52);">=</span><span> </span><span class="token interpolation-string" style="color: rgb(163, 21, 21);">\)”/v1/market/ticker?symbol={symbol}“;
        var req = new HttpRequestMessage(HttpMethod.Get, path);
        AddAuthHeaders(req);
        var resp = await _http.SendAsync(req);
        resp.EnsureSuccessStatusCode();
        return await resp.Content.ReadAsStringAsync();
    }

    public async Task<string> PlaceOrderAsync(string symbol, string side, decimal quantity, decimal price)
    {
        var path = ”/v1/order”;
        var bodyObj = new { symbol, side, quantity, price };
        var body = JsonConvert.SerializeObject(bodyObj);
        var req = new HttpRequestMessage(HttpMethod.Post, path)
        {
            Content = new StringContent(body, Encoding.UTF8, “application/json”)
        };
        AddAuthHeaders(req, body);
        var resp = await http.SendAsync(req);
        resp.EnsureSuccessStatusCode();
        return await resp.Content.ReadAsStringAsync();
    }
}

csharp
 ffON2NH02oMAcqyoh2UU MQCbz04ET5EljRmK3YpQ CPXAhl7VTkj2dHDyAYAf” data-copycode=“true” role=“button” aria-label=“Copy Code”>Copy CodeCopied
static async Task Main()
{
    var apiKey = Environment.GetEnvironmentVariable(“OB_API_KEY”);
    var apiSecret = Environment.GetEnvironmentVariable(“OB_API_SECRET”);
    var client = new OneBrockerClient(apiKey, apiSecret);

    var ticker = await client.GetTickerAsync(“BTCUSD”);
    Console.WriteLine(“Ticker: “ + ticker);

    var order = await client.PlaceOrderAsync(“BTCUSD”, “buy”, 0.001m, 45000m);
    Console.WriteLine(“Order response: “ + order);
}