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b628d72766
This changes the CI / release builds to use the latest Go version. It also upgrades golangci-lint to a newer version compatible with Go 1.19. In Go 1.19, godoc has gained official support for links and lists. The syntax for code blocks in doc comments has changed and now requires a leading tab character. gofmt adapts comments to the new syntax automatically, so there are a lot of comment re-formatting changes in this PR. We need to apply the new format in order to pass the CI lint stage with Go 1.19. With the linter upgrade, I have decided to disable 'gosec' - it produces too many false-positive warnings. The 'deadcode' and 'varcheck' linters have also been removed because golangci-lint warns about them being unmaintained. 'unused' provides similar coverage and we already have it enabled, so we don't lose much with this change.
60 lines
2.1 KiB
Go
60 lines
2.1 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package node_test
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import (
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"fmt"
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"log"
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"github.com/ethereum/go-ethereum/node"
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)
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// SampleLifecycle is a trivial network service that can be attached to a node for
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// life cycle management.
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//
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// The following methods are needed to implement a node.Lifecycle:
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// - Start() error - method invoked when the node is ready to start the service
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// - Stop() error - method invoked when the node terminates the service
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type SampleLifecycle struct{}
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func (s *SampleLifecycle) Start() error { fmt.Println("Service starting..."); return nil }
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func (s *SampleLifecycle) Stop() error { fmt.Println("Service stopping..."); return nil }
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func ExampleLifecycle() {
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// Create a network node to run protocols with the default values.
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stack, err := node.New(&node.Config{})
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if err != nil {
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log.Fatalf("Failed to create network node: %v", err)
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}
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defer stack.Close()
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// Create and register a simple network Lifecycle.
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service := new(SampleLifecycle)
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stack.RegisterLifecycle(service)
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// Boot up the entire protocol stack, do a restart and terminate
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if err := stack.Start(); err != nil {
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log.Fatalf("Failed to start the protocol stack: %v", err)
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}
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if err := stack.Close(); err != nil {
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log.Fatalf("Failed to stop the protocol stack: %v", err)
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}
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// Output:
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// Service starting...
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// Service stopping...
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}
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