eapi

EOS eAPI interaction module. This module allows interaction with the CLI via eAPI command requests. This allows EOS SDK applications access to configuration and status of EOS state for which EOS SDK APIs do not yet exist. Note that each method is a synchronous call, and opens a unix-domain socket. Therefore, this is not intended to be a replacement for other EosSdk modules.

For more information about eAPI, please visit https://eos.arista.com/arista-eapi-101/

The following snippet shows how to load an eAPI response into a json_t object from the jansson library, although any json library to convert from json-formatted text will do. Based on the jansson library documentation: https://jansson.readthedocs.io/en/2.10/tutorial.html

eapi_response_t show_interfaces = eapiMgr->run_show_cmd("show interfaces");
json_t* root;
json_error_t error;
if (show_interfaces.success()) {
   root = json_loads(show_interfaces.responses()[0], 0, &error);
}
if (!root) {
   fprintf(stderr, "error: on line %d: %s\n", error.line, error.text);
}
json_t* interfaces = json_object_get(root, "interfaces");
json_t* intf1 = json_object_get(interfaces, "Ethernet1");
json_t* desc1 = json_object_get(intf1, "description");

printf("Ethernet1's description: " << json_string_value(desc1));
...

namespace eos

class eapi_mgr

#include <eapi.h>

eAPI manager.

Public Functions

virtual ~eapi_mgr()

virtual eapi_response_t run_show_cmd(std::string const &) const = 0

Executes a “show” CLI command in enable mode.

virtual eapi_response_t run_config_cmds(std::vector< std::string > const &) const = 0

Executes one or many CLI commands in configuration mode.

Protected Functions

eapi_mgr()

Private Members

eapi_mgr

Type definitions in eapi

namespace eos

class eapi_response_t

#include <eapi.h>

An eAPI response from the Cli server.

Public Functions

eapi_response_t()

Default constructor.

eapi_response_t(bool success, uint32_t error_code, std::string const & error_message, std::vector< std::string > const & responses)

Full constructor.

bool success() const

Getter for ‘success’: indicates if a response was received.

uint32_t error_code() const

Getter for ‘error_code’: error code from eAPI response.

std::string error_message() const

Getter for ‘error_message’: error message from response.

std::vector< std::string > const & responses() const

Getter for ‘responses’: the set of strings that constitute an eAPI response.

std::string raw_response() const

Getter for ‘raw_response’: raw eAPI response (if requested).

std::string to_string() const

Returns a string representation of the current object’s values.

Private Members

bool success_

uint32_t error_code_

std::string error_message_

std::vector< std::string > responses_

std::string raw_response_

Friends

friend std::ostream & operator<<

A utility stream operator that adds a string representation of eapi_response_t to the ostream.