Log failure to dump configs less frequently

Summary: It's not necessary to log every single failure to dump last valid configs.

Reviewed By: jmswen

Differential Revision: D4711040

fbshipit-source-id: 774f2659213dcdfe23ef927092397f2b1e71cc5e

Improve TLS ticket key generation

Summary: Improve the way AsyncMcServer generates TLS ticket keys.

Reviewed By: glamtechie

Differential Revision: D4565521

fbshipit-source-id: 7391c76d2af64bf583b38721c7a38f406f66a469

Template Proxy by RouterInfo

Summary:
Templating Proxy by RouterInfo.
Everything that proxy depends on should be also templated.
Things that depends on Proxy are still not templated/ready.

Reviewed By: jmswen

Differential Revision: D4230941

fbshipit-source-id: 9e95bfc2f05278263c191559da4857f5806b50d6

Refactor proxy stats

Summary:
Moving proxy stats to a separate class to better improve encapsulation and
facilitate removing dependencies on Proxy.

Reviewed By: jmswen

Differential Revision: D4068381

fbshipit-source-id: dec2277168d964bb05fee2c0232086069d9b744e

Unified read/write API in protocol readers/writers

Reviewed By: jmswen

Differential Revision: D3942550

fbshipit-source-id: 2545132e9220ecc1e6a206e70e3df0399633dd2e

Add a field visitor interface to the generated structures

Summary:
Support visitor interface in generated structures and add method for converting Carbon structs into folly::dynamic.

The interface of visitors:
  class Visitor {
    /**
     * Called when we enter a mixin.
     *
     * param id  mixin id
     * param mixinName  name of mixin class
     * param t  value of mixin
     * return false  iff we should skip recursive processing of this mixin.
     */
    template <class T>
    bool enterMixin(uint16_t id, folly::StringPiece mixinName, const T& t);

    /**
     * Called when we exit from mixin.
     *
     * return false  iff we should stop further processing of current struct and
     *                should go one level up.
     */
    bool leaveMixin();

    /**
     * Called on each field of Carbon struct.
     *
     * param id  field id
     * param fieldName  name of field
     * param t  value of the field
     * return false  iff we should skip all further fields in the current struct and go one level up.
     */
    template <class T>
    bool visitField(uint16_t id, folly::StringPiece fieldName, const T& t);
  };

Reviewed By: jmswen

Differential Revision: D3814414

fbshipit-source-id: 0cae105fa4f5547a173ee02242b909275ea6aaf3

Bump version to 31:0

Bump version to 30:0

Bump version to 29:0

Bump version to 28:0