softwarecontainer::ContainerOptionParser Class Reference

Public Member Functions
std::unique_ptr< DynamicContainerOptions >	parse (const std::string &config)
	Parse config needed for starting up the container in a correct manner. More...

Detailed Description

Definition at line 49 of file containeroptionparser.h.

Member Function Documentation

std::unique_ptr< DynamicContainerOptions > softwarecontainer::ContainerOptionParser::parse

(

const std::string &

config

)

Parse config needed for starting up the container in a correct manner.

This reads a config string into json format, makes sure it is formatted correctly, and then calls readConfigElement for its elements.

Parameters

config

a configuration string

Returns

a DynamicContainerOptions object with the given settings set.

Exceptions

a	ContainerOptionParserError in case of bad input

Definition at line 73 of file containeroptionparser.cpp.

Referenced by softwarecontainer::SoftwareContainerAgent::createContainer().

{
    if (config.size() == 0) {
        std::string errorMessage("Empty JSON config strings are not supported.");
        log_error() << errorMessage;
        throw ContainerOptionParseError(errorMessage);
    }

    json_error_t error;
    json_t *root = json_loads(config.c_str(), 0, &error);

    if (!root) {
        std::string errorMessage("Could not parse config: "
                                + std::string(error.text)
                                + config);
        log_error() << errorMessage;
        throw ContainerOptionParseError(errorMessage);
    }

    if (!json_is_array(root)) {
        std::string errorMessage("Root JSON element is not an array");
        log_error() << errorMessage;
        json_decref(root);
        throw ContainerOptionParseError(errorMessage);
    }

    size_t index;
    json_t *element;

    try {
        json_array_foreach(root, index, element) {
            readConfigElement(element);
        }
    } catch (ContainerOptionParseError &err) {
        json_decref(root);
        throw;
    }
    json_decref(root);

    std::unique_ptr<DynamicContainerOptions> ret = std::move(m_options);
    m_options.reset(new DynamicContainerOptions());
    return ret;
}

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The documentation for this class was generated from the following files:

• agent/src/containeroptions/containeroptionparser.h
• agent/src/containeroptions/containeroptionparser.cpp