iomesh-client-sdk-go

README

I/O Mesh Client SDK for Go

Official Go client SDK for the I/O Mesh broker and connector platform.

Capability	Package
HTTP publish / pull subscribe / streams / KV / memory	aionclient
Partner webhook HMAC + observation envelopes	connectorsdk
Aion Kafka protocol (Produce subset)	kafka · via aionclient.KafkaClient
Shared envelope + CUID helpers	envelope · cuid

Module path: github.com/iome-sh/iomesh-client-sdk-go
Package name aionclient: stable API name for the mesh HTTP client (historical “Aion” core). Prefer this module over the deprecated monorepo path mesh-client-sdk-go.

Requirements

• Go 1.22+ (module declares the toolchain used in CI)
• Network access to an I/O Mesh broker (or local foundation)

Install

go get github.com/iome-sh/iomesh-client-sdk-go@v0.1.0

Quick start — connect and publish

package main

import (
	"context"
	"log"

	"github.com/iome-sh/iomesh-client-sdk-go/aionclient"
)

func main() {
	nc, err := aionclient.Connect(
		aionclient.Options{URL: "http://127.0.0.1:8422"},
		aionclient.WithTenant("dept.engineering"),
		aionclient.WithOrg("acme-org"),
	)
	if err != nil {
		log.Fatal(err)
	}

	ctx := context.Background()
	if err := nc.CreateStream(ctx, aionclient.StreamConfig{
		Name:     "EVENTS",
		Subjects: []string{"dept.engineering.events.>"},
	}); err != nil {
		log.Fatal(err)
	}

	ack, err := nc.Publish(ctx, "EVENTS", "dept.engineering.events.demo", []byte(`{"hello":"mesh"}`))
	if err != nil {
		log.Fatal(err)
	}
	log.Printf("published seq=%d subject=%s partition=%d", ack.Seq, ack.Subject, ack.Partition)
}

Connector SDK (HMAC + envelope)

import "github.com/iome-sh/iomesh-client-sdk-go/connectorsdk"

payload, err := connectorsdk.NormalizeEnvelope(
	"acme-crm", "engineering", "acme-crm", "evt-42", "contact.created",
	json.RawMessage(`{"email":"user@example.com"}`),
)

See examples/connector-sdk-template/ for a full webhook adapter.

Kafka Produce

kc := aionclient.NewKafkaClient("127.0.0.1:9423")
defer kc.Close()

offset, err := kc.Produce(ctx, "aion.finance.events", 0, []byte("key"), []byte(`{"event_id":"evt-1"}`))

Security

• Report vulnerabilities privately: see SECURITY.md.
• Do not commit API tokens, broker URLs with credentials, or customer payloads into issues/PRs.
• Prefer short-lived bearer tokens (WithBearerToken) and tenant-scoped headers (WithTenant / WithOrg).
• Connector HMAC secrets must stay server-side; never embed partner secrets in mobile or browser clients.

Versioning & support

• Semantic versioning (vMAJOR.MINOR.PATCH).
• Breaking changes only in major versions; see CHANGELOG.md and RELEASING.md.
• Supported Go versions: last two stable releases (CI matrix).

Development

go test ./...
go test -race ./...
golangci-lint run ./...   # if installed

Integration tests that require a live broker or monorepo harness are tagged //go:build ignore and run from the I/O Mesh platform monorepo.

Related

Repo	Role
iome-sh/aion	Platform / broker (private)
iome-sh/iomesh	Marketing site
Upcoming	iomesh-client-sdk-ts, iomesh-client-sdk-python, …

License

MIT © 2026 iome.sh