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main.go
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main.go
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// Copyright (c) 2018 Northwestern Mutual.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package main
import (
"flag"
"go.uber.org/zap"
"github.com/brugnara/grammes"
"github.com/brugnara/grammes/examples/exampleutil"
)
var (
// addr is used for holding the connection IP address.
// for example this could be, "ws://127.0.0.1:8182"
addr string
)
func main() {
flag.StringVar(&addr, "h", "", "Connection IP")
flag.Parse()
logger := exampleutil.SetupLogger()
defer logger.Sync()
if addr == "" {
logger.Fatal("No host address provided. Please run: go run main.go -h <host address>")
return
}
// Create a new Grammes client with a standard websocket.
client, err := grammes.DialWithWebSocket(addr)
if err != nil {
logger.Fatal("Couldn't create client", zap.Error(err))
}
// Drop all vertices on the graph currently.
client.DropAll()
// Drop the testing vertices when finished.
defer client.DropAll()
// Add testing vertices to the graph.
vertex, err := client.AddVertex("person")
if err != nil {
logger.Fatal("Error adding vertex", zap.Error(err))
}
client.AddVertex("person")
client.AddVertex("car")
// Drop vertices with this ID.
err = client.DropVertexByID(vertex.ID())
if err != nil {
logger.Fatal("Error dropping vertices", zap.Error(err))
}
// Count the vertices after dropping.
count, err := client.VertexCount()
if err != nil {
logger.Fatal("Unable to count vertices", zap.Error(err))
}
// Print out the vertices that are left over after dropping.
// This should be 2.
logger.Info("vertices left over (should be 2)", zap.Int64("count", count))
}