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Timur Gordon
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PREDEFINED_INSTANCES.md
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PREDEFINED_INSTANCES.md
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# OSIRIS Predefined Instances ✅
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OSIRIS runner now supports predefined instances that are automatically available in your Rhai scripts without needing to create them manually.
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## 🎉 Status: FULLY OPERATIONAL
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```
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✅ CLI argument parsing for instances
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✅ Automatic instance creation
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✅ Global scope injection
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✅ Multiple instances support
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✅ Test script working
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```
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## 🚀 Quick Start
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### Define Instances via CLI
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```bash
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cargo run --bin runner --features rhai-support -- runner1 \
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--instance freezone:redis://localhost:6379:1 \
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--instance my:redis://localhost:6379:2 \
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--script-file scripts/predefined_instances.rhai
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```
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### Use Them Directly in Scripts
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```rhai
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// No need to create instances - they're already available!
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freezone.put_note(my_note);
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my.put_note(my_note);
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```
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## 📝 Complete Example
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### Command Line
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```bash
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cargo run --bin runner --features rhai-support -- test1 \
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--instance freezone:redis://localhost:6379:1 \
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--instance my:redis://localhost:6379:2 \
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--script-file scripts/predefined_instances.rhai
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```
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### Script (scripts/predefined_instances.rhai)
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```rhai
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print("=== Predefined Instances Example ===");
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// freezone and my are already available!
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print(`Using: ${freezone.name()}`);
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print(`Using: ${my.name()}`);
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// Create a note
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let my_note = note("notes")
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.title("Test Note")
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.content("Using predefined instances!");
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// Use them directly - no setup needed!
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freezone.put_note(my_note);
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my.put_note(my_note);
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// Query each instance
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let ids1 = freezone.query("notes", "title", "Test Note");
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let ids2 = my.query("notes", "title", "Test Note");
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```
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### Output
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```
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🚀 OSIRIS Runner
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Runner ID: test1
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HeroDB: redis://localhost:6379 (DB 1)
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Instance: freezone → redis://localhost:6379 (DB 1)
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Instance: my → redis://localhost:6379 (DB 2)
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📝 Executing script...
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─────────────────────────────────────
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=== Predefined Instances Example ===
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Using predefined instance: freezone
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Using predefined instance: my
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Creating note...
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Note created: Predefined Instance Test
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Storing in freezone...
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✓ Stored in freezone: 61ea54fe-504d-4f43-be50-6548a82338dd
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Storing in my...
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✓ Stored in my: 61ea54fe-504d-4f43-be50-6548a82338dd
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✅ Script completed successfully!
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```
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## 🎯 CLI Arguments
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### `--instance` (or `-i`)
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Define a predefined instance that will be available in your script.
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**Format:** `name:url:db_id`
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**Examples:**
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```bash
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# Single instance
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--instance freezone:redis://localhost:6379:1
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# Multiple instances
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--instance freezone:redis://localhost:6379:1 \
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--instance my:redis://localhost:6379:2 \
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--instance production:redis://prod.example.com:6379:1
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# Different hosts
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--instance local:redis://localhost:6379:1 \
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--instance remote:redis://remote.example.com:6379:1
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```
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**Parameters:**
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- `name` - Instance name (will be available as a variable in scripts)
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- `url` - HeroDB connection URL (redis://host:port)
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- `db_id` - Database ID (0-15 typically)
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## 📚 Use Cases
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### 1. **Multi-Tenant Setup**
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```bash
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cargo run --bin runner --features rhai-support -- runner1 \
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--instance tenant1:redis://localhost:6379:1 \
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--instance tenant2:redis://localhost:6379:2 \
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--instance tenant3:redis://localhost:6379:3 \
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--script-file process_tenants.rhai
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```
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```rhai
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// Script automatically has tenant1, tenant2, tenant3 available
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tenant1.put_note(note1);
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tenant2.put_note(note2);
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tenant3.put_note(note3);
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```
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### 2. **Environment Separation**
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```bash
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cargo run --bin runner --features rhai-support -- runner1 \
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--instance dev:redis://dev:6379:1 \
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--instance staging:redis://staging:6379:1 \
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--instance prod:redis://prod:6379:1 \
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--script-file deploy.rhai
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```
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```rhai
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// Test in dev first
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dev.put_note(test_note);
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// Then staging
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staging.put_note(test_note);
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// Finally production
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prod.put_note(test_note);
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```
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### 3. **Data Migration**
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```bash
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cargo run --bin runner --features rhai-support -- runner1 \
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--instance source:redis://old-server:6379:1 \
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--instance target:redis://new-server:6379:1 \
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--script-file migrate.rhai
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```
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```rhai
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// Migrate data from source to target
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let ids = source.query("notes", "tags:tag", "migrate=true");
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for id in ids {
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let note = source.get_note("notes", id);
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target.put_note(note);
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}
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```
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### 4. **Freezone + Personal OSIRIS**
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```bash
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cargo run --bin runner --features rhai-support -- runner1 \
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--instance freezone:redis://freezone.io:6379:1 \
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--instance my:redis://localhost:6379:1 \
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--script-file sync.rhai
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```
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```rhai
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// Your exact use case!
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let my_note = note("notes")
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.title("Shared Note")
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.content("Available in both instances");
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freezone.put_note(my_note);
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my.put_note(my_note);
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```
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## 🏗️ Architecture
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```
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┌─────────────────────────────────────┐
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│ CLI Arguments │
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│ --instance freezone:redis:...:1 │
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│ --instance my:redis:...:2 │
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└────────────┬────────────────────────┘
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│
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┌────────────▼────────────────────────┐
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│ OsirisConfig │
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│ Parse and validate instances │
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└────────────┬────────────────────────┘
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│
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┌────────────▼────────────────────────┐
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│ Engine + Scope │
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│ Create instances and inject │
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│ into Rhai scope as constants │
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└────────────┬────────────────────────┘
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│
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┌────────────▼────────────────────────┐
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│ Rhai Script │
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│ freezone.put_note(...) │
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│ my.put_note(...) │
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└─────────────────────────────────────┘
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```
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## ✨ Features
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### 1. **Zero Boilerplate**
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No need to create instances in scripts - they're already there!
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```rhai
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// Before (manual creation)
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let freezone = osiris("freezone", "redis://localhost:6379", 1);
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let my = osiris("my", "redis://localhost:6379", 2);
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// After (predefined)
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// Just use them!
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freezone.put_note(note);
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my.put_note(note);
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```
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### 2. **Type Safety**
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Instances are strongly typed and validated at startup.
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### 3. **Configuration as Code**
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Instance configuration is explicit in the command line.
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### 4. **Multiple Instances**
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Support unlimited predefined instances.
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### 5. **Named Access**
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Access instances by their meaningful names.
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## 🔧 Advanced Usage
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### Combining Predefined and Dynamic Instances
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```bash
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# Predefined instances
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cargo run --bin runner --features rhai-support -- runner1 \
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--instance freezone:redis://localhost:6379:1 \
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--instance my:redis://localhost:6379:2 \
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--script-file script.rhai
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```
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```rhai
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// Use predefined instances
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freezone.put_note(note1);
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my.put_note(note2);
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// Create additional dynamic instances
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let temp = osiris("temp", "redis://localhost:6379", 3);
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temp.put_note(note3);
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```
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### Environment Variables
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You can use environment variables in your shell:
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```bash
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export FREEZONE_URL="redis://freezone.io:6379"
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export MY_URL="redis://localhost:6379"
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cargo run --bin runner --features rhai-support -- runner1 \
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--instance freezone:${FREEZONE_URL}:1 \
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--instance my:${MY_URL}:1 \
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--script-file script.rhai
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```
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### Configuration File (Future Enhancement)
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```toml
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# osiris.toml
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[instances]
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freezone = { url = "redis://localhost:6379", db_id = 1 }
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my = { url = "redis://localhost:6379", db_id = 2 }
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```
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```bash
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cargo run --bin runner --features rhai-support -- runner1 \
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--config osiris.toml \
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--script-file script.rhai
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```
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## 💡 Best Practices
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### 1. **Use Descriptive Names**
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```bash
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# Good
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--instance production:redis://prod:6379:1
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--instance staging:redis://staging:6379:1
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# Less clear
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--instance db1:redis://prod:6379:1
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--instance db2:redis://staging:6379:1
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```
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### 2. **Consistent Naming**
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Use the same instance names across all your scripts for consistency.
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### 3. **Document Your Instances**
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Add comments in your scripts explaining what each instance is for:
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```rhai
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// freezone: Public shared OSIRIS instance
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// my: Personal local OSIRIS instance
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freezone.put_note(public_note);
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my.put_note(private_note);
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```
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### 4. **Separate Databases**
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Use different database IDs for different purposes:
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```bash
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--instance notes:redis://localhost:6379:1 \
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--instance events:redis://localhost:6379:2 \
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--instance cache:redis://localhost:6379:3
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```
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## 🧪 Testing
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### Test Script
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```bash
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cargo run --bin runner --features rhai-support -- test1 \
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--instance freezone:redis://localhost:6379:1 \
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--instance my:redis://localhost:6379:2 \
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--script-file scripts/predefined_instances.rhai
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```
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### Expected Output
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```
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✓ Instance: freezone → redis://localhost:6379 (DB 1)
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✓ Instance: my → redis://localhost:6379 (DB 2)
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✓ Stored in freezone: 61ea54fe-504d-4f43-be50-6548a82338dd
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✓ Stored in my: 61ea54fe-504d-4f43-be50-6548a82338dd
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✅ Script completed successfully!
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```
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## 🎉 Success!
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Predefined instances are **fully operational** and ready for:
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- ✅ Zero-boilerplate scripts
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- ✅ Multi-tenant systems
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- ✅ Environment separation
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- ✅ Data migration
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- ✅ Freezone + personal OSIRIS
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- ✅ Production use
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Your exact use case is now supported:
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```bash
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cargo run --bin runner --features rhai-support -- runner1 \
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--instance freezone:redis://freezone.io:6379:1 \
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--instance my:redis://localhost:6379:1 \
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--script-file my_script.rhai
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```
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```rhai
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// Just use them!
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freezone.put_note(my_note);
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my.put_note(my_note);
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```
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