mirror of
https://github.com/gitpod-io/gitpod.git
synced 2025-12-08 17:36:30 +00:00
1bc35eb6e1
* [memory bank] Initialize cline memory bank Tool: gitpod/catfood.gitpod.cloud * [memory-bank] Start documenting first components (blobserve, content-service, dashboard, ws-manager-mk2) Tool: gitpod/catfood.gitpod.cloud * [memory-bank] Document more components (supervisor, ws-daemon) Tool: gitpod/catfood.gitpod.cloud * [memory-bank] More components (ide-service, registry-facade, image-builder-mk3) Tool: gitpod/catfood.gitpod.cloud * [memory-bank] Document proxy, server and ws-proxy Tool: gitpod/catfood.gitpod.cloud * [memory-bank] Document gitpod-cli and gitpod-db Tool: gitpod/catfood.gitpod.cloud * [memory-bank] Document gitpod-protocol Tool: gitpod/catfood.gitpod.cloud * [memory-bank] Document ide-proxy, ide and ws-manager-bridge Tool: gitpod/catfood.gitpod.cloud * [memory-bank] Document ide-metrics and local-app Tool: gitpod/catfood.gitpod.cloud * [memory-bank] Document public-api-serverr and usage Tool: gitpod/catfood.gitpod.cloud * [memory-bank] Document common-go and workspacekit Tool: gitpod/catfood.gitpod.cloud * [memory-bank] Document spicedb, scrubber and service-waiter Tool: gitpod/catfood.gitpod.cloud * [memory-bank] Documented docker-up, image-builder-bob, node-labeler Tool: gitpod/catfood.gitpod.cloud * [memory-bank] Documented openvsx-proxy, scheduler-extender, ipfs Tool: gitpod/catfood.gitpod.cloud * [memory-bank] Update rules to lay out the "components" structure Tool: gitpod/catfood.gitpod.cloud
89 lines
3.1 KiB
Markdown
89 lines
3.1 KiB
Markdown
# Blobserve Component
|
|
|
|
## Overview
|
|
|
|
Blobserve is a service that provides static assets from OCI (Open Container Initiative) images. It serves as a specialized content delivery mechanism for container images, allowing efficient access to static content within those images.
|
|
|
|
## Purpose
|
|
|
|
The primary purpose of Blobserve is to:
|
|
- Extract and serve static content from container images
|
|
- Provide efficient access to image layers
|
|
- Handle authentication with container registries
|
|
- Serve HTTP requests for blob content
|
|
|
|
## Architecture
|
|
|
|
Blobserve operates as an HTTP server that:
|
|
1. Connects to container registries
|
|
2. Retrieves image content
|
|
3. Extracts and caches static assets
|
|
4. Serves these assets via HTTP
|
|
|
|
## Key Files and Structure
|
|
|
|
- `main.go`: Entry point that calls the Execute function from the cmd package
|
|
- `cmd/root.go`: Defines the root command and basic service configuration
|
|
- `cmd/run.go`: Implements the main server functionality
|
|
- `pkg/blobserve`: Contains the core implementation of the blob serving functionality
|
|
|
|
## Dependencies
|
|
|
|
### Internal Dependencies
|
|
- `components/common-go:lib`: Common Go utilities used across Gitpod
|
|
- `components/registry-facade-api/go:lib`: API definitions for registry facade
|
|
- `components/registry-facade:lib`: Library for interacting with container registries
|
|
|
|
### External Dependencies
|
|
- `containerd/containerd`: For container image handling
|
|
- `docker/cli`: For Docker configuration handling
|
|
- `prometheus`: For metrics and monitoring
|
|
- `spf13/cobra`: For command-line interface
|
|
|
|
## Configuration
|
|
|
|
Blobserve is configured via a JSON configuration file that includes:
|
|
- Authentication configuration for container registries
|
|
- HTTP server settings
|
|
- Repository mappings
|
|
- Caching parameters
|
|
- Monitoring endpoints
|
|
|
|
## Integration Points
|
|
|
|
Blobserve integrates with:
|
|
1. **Container Registries**: Connects to registries like Docker Hub, ECR, GCR
|
|
2. **Prometheus**: Exposes metrics for monitoring
|
|
3. **Health Checking**: Provides readiness probes for Kubernetes
|
|
|
|
## Security Considerations
|
|
|
|
- Requires proper IAM permissions when using cloud-based container registries (e.g., AWS ECR)
|
|
- Handles authentication credentials for private registries
|
|
- Monitors file changes for authentication configuration updates
|
|
|
|
## Common Usage Patterns
|
|
|
|
Blobserve is typically used to:
|
|
1. Serve static content from workspace images
|
|
2. Provide efficient access to container image layers
|
|
3. Cache frequently accessed content for performance
|
|
|
|
## Metrics and Monitoring
|
|
|
|
Blobserve exposes several Prometheus metrics:
|
|
- `http_client_requests_total`: Counter of outgoing HTTP requests
|
|
- `http_client_requests_duration_seconds`: Histogram of outgoing HTTP request durations
|
|
- `http_server_requests_total`: Counter of incoming HTTP requests
|
|
- `http_server_requests_duration_seconds`: Histogram of incoming HTTP request durations
|
|
|
|
## Known Limitations
|
|
|
|
- Requires specific IAM permissions when using cloud-based container registries
|
|
- Authentication configuration must be properly set up for private registries
|
|
|
|
## Related Components
|
|
|
|
- **Registry Facade**: Works closely with Blobserve to provide access to container images
|
|
- **Workspace Manager**: May use Blobserve to access workspace image content
|