> For the complete documentation index, see [llms.txt](https://docs.lenses.io/latest/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lenses.io/latest/devx/5.5/user-guide/cli/golang-client.md).

# Golang client

This page describes using the Lenses Golang client.

## Installation <a href="#installation" id="installation"></a>

```bash
go get -u github.com/lensesio/lenses-go
```

## Getting started <a href="#getting-started" id="getting-started"></a>

```bash
import "github.com/lensesio/lenses-go"

// Prepare authentication using raw Username and Password.
auth := lenses.BasicAuthentication{Username: "user", Password: "pass"}


#auth := lenses.KerberosAuthentication{
#    ConfFile: "/etc/krb5.conf",
#    Method:   lenses.KerberosWithPassword{
#        Realm: "my.realm or default if empty",
#        Username: "user",
#        Password: "pass",
#    },
#}

#auth := lenses.KerberosAuthentication{
#    ConfFile: "/etc/krb5.conf",
#    Method:   lenses.KerberosWithKeytab{KeytabFile: "/home/me/krb5_my_keytab.txt"},
#}

#auth := lenses.KerberosAuthentication{
#    ConfFile: "/etc/krb5.conf",
#    Method:   lenses.KerberosFromCCache{CCacheFile: "/tmp/krb5_my_cache_file.conf"},
#}
```

## Configuration <a href="#configuration" id="configuration"></a>

```java
// Prepare the client's configuration based on the host and the authentication above.
currentConfig := lenses.ClientConfig{Host: "domain.com", Authentication: auth, Timeout: "15s", Debug: true}

// Creating the client using the configuration.
client, err := lenses.OpenConnection(currentConfig)
if err != nil {
    // handle error.
}
```

### Usage <a href="#usage" id="usage"></a>

All *lenses-go#Client* methods return a typed value based on the call and an error as second output to catch any errors coming from backend or client, forget panics.

```java
topics, err := client.GetTopics()
if err != nil {
    // handle error.
}

// Print the length of the topics we've just received from our Lenses Box.
print(len(topics))
```


---

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