refactor: Refactor V2 API to use new errors mechanism for go-mo-core-contracts

[lenny-goodell]

PR Checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe:

What is the current behavior?

V2 API used old errors definitions from go-mod-core-contracts V2 which no longer exist.

Issue Number: #487

What is the new behavior?

Now uses new errors mechanism from go-mod-core-contracts

Does this PR introduce a breaking change?

• Yes
• No

Are there any new imports or modules? If so, what are they used for and why?

no

Are there any specific instructions or things that should be known prior to reviewing?

Other information

[lenny-goodell]

recheck

[lenny-goodell]

recheck

[bus710]

Hi,

Thanks for working on this!

I think the error I am getting is related to this issue:

$ make build
CGO_ENABLED=1 GO111MODULE=on go build -o app-service
go: finding module for package github.com/edgexfoundry/go-mod-core-contracts/clients/urlclient/retry
/root/go/pkg/mod/github.com/edgexfoundry/[email protected]/pkg/urlclient/urlclient.go:24:2: module github.com/edgexfoundry/go-mod-core-contracts@latest found (v0.1.79), but does not contain package github.com/edgexfoundry/go-mod-core-contracts/clients/urlclient/retry
Makefile:6: recipe for target 'build' failed
make: *** [build] Error 1

I want to use a commit version so that I can avoid this issue but it seems like a kind of recurring issue so that I am not sure which commit can be a stable version. Please let me know if you need more information from me to find out about this.

[lenny-goodell]

@bus710 , see my response in Slack.

[bus710]

Leaving this comment in merged ticket might be a bad idea but just want to leave a follow up.

As guided in the slack channel, I removed all the indirect dependencies in the go.mod of example in app function SDK so that it looks like this:

go 1.15

require (
	github.com/edgexfoundry/app-functions-sdk-go v1.2.0
)

Also, installed ZeroMQ as the gist:

• https://gist.github.com/katopz/8b766a5cb0ca96c816658e9407e83d00
• Ubuntu 18.04 and 20.04 work fine
• Also, shouldn't forget these:
  • go get -u github.com/rjeczalik/pkgconfig/cmd/pkg-config
  • echo "export PKG_CONFIG_PATH=/usr/local/Cellar/zeromq/4.2.5/lib/pkgconfig/" >> ~/.bashrc

In the simple-filter-xml, I run make and no error found.