github.com/system47/go-msgraph

Golang Microsoft Graph API implementation

go-msgraph is a go lang implementation of the Microsoft Graph API. See https://developer.microsoft.com/en-us/graph/docs/concepts/overview

General

This implementation has been written to get various user, group and calendar details out of a Microsoft Azure Active Directory. Currently only READ-access is implemented, but you are welcome to add WRITE-support to it & backmerge it

Features

working & tested:

• list users, groups, calendars, calendarevents
• automatically grab & refresh token for API-access
• json-load the GraphClient struct & initialize it
• set timezone for full-day CalendarEvent

in progress:

• implement paging to load huge data-sets, currently limitted to one page, 999 entries

planned:

• add further support for mail, personal contacts (outlook), devices and apps, files etc. See https://developer.microsoft.com/en-us/graph/docs/concepts/v1-overview

Example

To get your credentials visit: https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-group-create-service-principal-portal

// initialize GraphClient manually
graphClient, err := msgraph.NewGraphClient("<TenantID>", "<ApplicationID>", "<ClientSecret>")
if err != nil {
    fmt.Println("Credentials are probably wrong or system time is not synced: ", err)
}

// initialize the GraphClient via JSON-Load. Please do proper error-handling (!)
// Specify JSON-Fields TenantID, ApplicationID and ClientSecret 
fileContents, err := ioutil.ReadFile("./msgraph-credentials.json")
var graphClient msgraph.GraphClient
err = json.Unmarshal(fileContents, &graphClient)

// List all users
users, err := graphClient.ListUsers()
// Gets all the detailled information about a user identified by it's ID or userPrincipalName
user, err := graphClient.GetUser("[e-mail]") 
// List all groups
groups, err := graphClient.ListGroups()
// List all members of a group.
groupMembers, err := groups[0].ListMembers()
// Lists all Calendars of a user
calendars, err := user.ListCalendars()

// Let all full-day calendar events that are loaded from ms graph be set to timezone Europe/Vienna:
// Standard is time.Local
msgraph.FullDayEventTimeZone, _ = time.LoadLocation("Europe/Vienna")

// Lists all CalendarEvents of the given userPrincipalName/ID that starts/ends within the the next 7 days
startTime := time.Now()
endTime := time.Now().Add(time.Hour * 24 * 7)
events, err := graphClient.ListCalendarView("[e-mail]", startTime, endTime)

Installation

Using go get

$ go get github.com/open-networks/go-msgraph

You can use go get -u to update the package.

Documentation

For docs, see http://godoc.org/github.com/open-networks/go-msgraph or run:

$ godoc github.com/open-networks/go-msgraph