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Couchbase Lite for Cgo

This project serves as the Go lang bindings for the couchbase-lite-C library developed by Couchbase Labs.

It currently supports commit e12e4a6 of the library.

Replication is now working via ws:// or wss://. Make sure to read the replicator_test.go file for more details on how to use replication properly with this library.

The package was built and tested on macOS (10.14.6+) using Go version go1.12.9 darwin/amd64.

Example

1. Copy and paste the following code:

package main


import (
	cblcgo "github.com/svr4/couchbase-lite-cgo"
	"fmt"
)

func main() {
	var config cblcgo.DatabaseConfiguration

	// Optional encryption key.
	var encryption_key cblcgo.EncryptionKey
	encryption_key.Algorithm = cblcgo.EncryptionNone
	encryption_key.Bytes = make([]byte, 0)

	config.Directory = "./"
	config.EncryptionKey = encryption_key
	config.Flags = cblcgo.Database_Create

	if db, err := cblcgo.Open("my_db", &config); err == nil {
		// Create a doc
		doc := cblcgo.NewDocumentWithId("test")
		doc.Props["name"] = "Luke"
		doc.Props["lastname"] = "Skywalker"
		doc.Props["age"] = 30
		doc.Props["email"] = "son.of.skywalker@gmail.com"
		doc.Props["action"] = "delete"

		if _, err2 := db.Save(doc, cblcgo.LastWriteWins); err2 == nil {
			// Retrieve the saved doc
			if savedDoc, e := db.GetMutableDocument("test"); e == nil {
				for k, v := range savedDoc.Props {
					if savedDoc.Props[k] != v {
						fmt.Println("Saved document and retrieved document are different.")
					}
				}
				savedDoc.Release()
			} else {
				fmt.Println(e)
			}
		} else {
			fmt.Println(err2)
		}

		if !db.Close() {
			fmt.Println("Couldn't close the database.")
		}

	} else {
		fmt.Println(err)
	}
	
}

2. In the root of your go project, run go mod init $(pwd).

3. Run go build, it will fail. You need to copy or symlink the built CouchbaseLiteC binary, using the code up to the latest supported commit described above, into the mod directory under $GOPATH/pkg/mod/github.com/svr4/couchbase-lite-cgo@vX.X.X/.

4. For macOS only: Make sure the @rpath and the @loader_path are set to the location of the CouchbaseLiteC binary in your go binary, with the following command: install_name_tool -change @rpath/libCouchbaseLiteC.dylib @loader_path/libCouchbaseLiteC.dylib your_go_binary

5. Run go build.

For more examples look in cblcgo_test.go.

Testing

If you want to test the package you must build the C library and move or link the necesary files under the include directory. The produced libCouchbaseLiteC binary from the build should be placed in the root of the package. Once that's in place simply run make tests and it should produce the .test binaries. To run basic tests use the script run_basic_tests.sh. To run replicator tests you need to do the proper configuration of couchbase server and sync gateway. Once that's in place do cblcgo-replicator.test -test.v.