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Published: May 22, 2017 License: BSD-3-Clause

README

This directory contains all the Go code for Vitess.

Most of the packages at the top level are general-purpose and are suitable for use outside Vitess. Packages that are specific to Vitess are in the vt subdirectory. Binaries are in the cmd subdirectory.

Please see GoDoc for a listing of the packages and their purposes.

vt/proto contains the compiled protos for go, one per each directory. When importing these protos (for instance XXX.proto), we rename them on import to XXXpb. For instance:

import (
    topodatapb "github.com/youtube/vitess/go/vt/proto/topodata"
)

Directories

Path Synopsis
Package acl contains functions to enforce access control lists.
Package acl contains functions to enforce access control lists.
Package cache implements a LRU cache.
Package cache implements a LRU cache.
Package cgzip wraps the C library for gzip.
Package cgzip wraps the C library for gzip.
cmd
mysqlctl
mysqlctl initializes and controls mysqld with Vitess-specific configuration.
mysqlctl initializes and controls mysqld with Vitess-specific configuration.
mysqlctld
mysqlctld is a daemon that starts or initializes mysqld and provides an RPC interface for vttablet to stop and start mysqld from a different container without having to restart the container running mysqlctld.
mysqlctld is a daemon that starts or initializes mysqld and provides an RPC interface for vttablet to stop and start mysqld from a different container without having to restart the container running mysqlctld.
vtcombo
vtcombo: a single binary that contains: - a ZK topology server based on an in-memory map.
vtcombo: a single binary that contains: - a ZK topology server based on an in-memory map.
vtgateclienttest
Package main is the implementation of vtgateclienttest.
Package main is the implementation of vtgateclienttest.
vtgateclienttest/services
Package services exposes all the services for the vtgateclienttest binary.
Package services exposes all the services for the vtgateclienttest binary.
vtworker
vtworker is the main program to run a worker job.
vtworker is the main program to run a worker job.
zk
zkctl
zkctl initializes and controls ZooKeeper with Vitess-specific configuration.
zkctl initializes and controls ZooKeeper with Vitess-specific configuration.
zkctld
zkctld is a daemon that starts or initializes ZooKeeper with Vitess-specific configuration.
zkctld is a daemon that starts or initializes ZooKeeper with Vitess-specific configuration.
Package event provides a reflect-based framework for low-frequency global dispatching of events, which are values of any arbitrary type, to a set of listener functions, which are usually registered by plugin packages during init().
Package event provides a reflect-based framework for low-frequency global dispatching of events, which are values of any arbitrary type, to a set of listener functions, which are usually registered by plugin packages during init().
syslogger
Package syslogger uses the event package to listen for any event that implements the Syslogger interface.
Package syslogger uses the event package to listen for any event that implements the Syslogger interface.
Package ewma implements exponentially weighted moving averages(EWMA).
Package ewma implements exponentially weighted moving averages(EWMA).
Package exit provides an alternative to os.Exit(int).
Package exit provides an alternative to os.Exit(int).
Package fileutil contains utility functions related to files and paths.
Package fileutil contains utility functions related to files and paths.
Package flagutil contains flags that parse string lists and string maps.
Package flagutil contains flags that parse string lists and string maps.
Package hack gives you some efficient functionality at the cost of breaking some Go rules.
Package hack gives you some efficient functionality at the cost of breaking some Go rules.
Package history implements a circular buffer with adjacent-item deduplication.
Package history implements a circular buffer with adjacent-item deduplication.
Package ioutil2 provides extra functionality along similar lines to io/ioutil.
Package ioutil2 provides extra functionality along similar lines to io/ioutil.
Package memcache is a client for memcached.
Package memcache is a client for memcached.
Package mysql wraps the C client library for MySQL.
Package mysql wraps the C client library for MySQL.
Package mysqlconn is a library to support MySQL binary protocol, both client and server sides.
Package mysqlconn is a library to support MySQL binary protocol, both client and server sides.
fakesqldb
Package fakesqldb provides a MySQL server for tests.
Package fakesqldb provides a MySQL server for tests.
replication
Package replication contains data structure definitions for MySQL replication related features.
Package replication contains data structure definitions for MySQL replication related features.
Package netutil contains network-related utility functions.
Package netutil contains network-related utility functions.
Package pools provides functionality to manage and reuse resources like connections.
Package pools provides functionality to manage and reuse resources like connections.
Package proc allows you to configure servers to be restarted with negligible downtime.
Package proc allows you to configure servers to be restarted with negligible downtime.
Package ratelimiter implements rate limiting functionality.
Package ratelimiter implements rate limiting functionality.
Package sqldb defines an interface for low level db connection.
Package sqldb defines an interface for low level db connection.
Package sqltypes implements interfaces and types that represent SQL values.
Package sqltypes implements interfaces and types that represent SQL values.
Package stats is a wrapper for expvar.
Package stats is a wrapper for expvar.
influxdbbackend
Package influxdbbackend is useful for publishing metrics to an InfluxDB backend (tested on v0.88).
Package influxdbbackend is useful for publishing metrics to an InfluxDB backend (tested on v0.88).
promstats
Package promstats contains adapters to publish stats variables to prometheus (http://prometheus.io)
Package promstats contains adapters to publish stats variables to prometheus (http://prometheus.io)
Package streamlog provides a non-blocking message broadcaster.
Package streamlog provides a non-blocking message broadcaster.
Package sync2 provides extra functionality along the same lines as sync.
Package sync2 provides extra functionality along the same lines as sync.
Package tb exposes some handy traceback functionality buried in the runtime.
Package tb exposes some handy traceback functionality buried in the runtime.
Package testfiles locates test files within the Vitess directory tree.
Package testfiles locates test files within the Vitess directory tree.
Package timer provides various enhanced timer functions.
Package timer provides various enhanced timer functions.
Package trace contains a helper interface that allows various tracing tools to be plugged in to components using this interface.
Package trace contains a helper interface that allows various tracing tools to be plugged in to components using this interface.
vt
automation
Package automation contains code to execute high-level cluster operations (e.g.
Package automation contains code to execute high-level cluster operations (e.g.
binlog/binlogplayer
Package binlogplayer contains the code that plays a filtered replication stream on a client database.
Package binlogplayer contains the code that plays a filtered replication stream on a client database.
binlog/eventtoken
Package eventtoken includes utility methods for event token handling.
Package eventtoken includes utility methods for event token handling.
binlog/grpcbinlogstreamer
Package grpcbinlogstreamer contains the gRPC implementation of the binlog streamer server component.
Package grpcbinlogstreamer contains the gRPC implementation of the binlog streamer server component.
callerid
Package callerid stores/retrives CallerIDs (immediate CallerID and effective CallerID) to/from the Context
Package callerid stores/retrives CallerIDs (immediate CallerID and effective CallerID) to/from the Context
callinfo
Package callinfo stores custom values into the Context (related to the RPC source)
Package callinfo stores custom values into the Context (related to the RPC source)
dbconfigs
Package dbconfigs is reusable by vt tools to load the db configs file.
Package dbconfigs is reusable by vt tools to load the db configs file.
dbconnpool
Package dbconnpool exposes a single DBConnection object with wrapped access to a single DB connection, and a ConnectionPool object to pool these DBConnections.
Package dbconnpool exposes a single DBConnection object with wrapped access to a single DB connection, and a ConnectionPool object to pool these DBConnections.
discovery
Package discovery provides a way to discover all tablets e.g.
Package discovery provides a way to discover all tablets e.g.
dtids
Package dtids contains dtid convenience functions.
Package dtids contains dtid convenience functions.
env
estimator
Package estimator implements future value estimation by EWMA algorithm.
Package estimator implements future value estimation by EWMA algorithm.
etcdtopo
Package etcdtopo implements topo.Server with etcd as the backend.
Package etcdtopo implements topo.Server with etcd as the backend.
events
Package events defines common structures used for events dispatched from various other package.
Package events defines common structures used for events dispatched from various other package.
key
logz
Package logz provides an infrastructure to expose a list of entries as a sortable table on a webpage.
Package logz provides an infrastructure to expose a list of entries as a sortable table on a webpage.
mysqlctl/backupstorage
Package backupstorage contains the interface and file system implementation of the backup system.
Package backupstorage contains the interface and file system implementation of the backup system.
mysqlctl/cephbackupstorage
Package cephbackupstorage implements the BackupStorage interface for Ceph Cloud Storage.
Package cephbackupstorage implements the BackupStorage interface for Ceph Cloud Storage.
mysqlctl/filebackupstorage
Package filebackupstorage implements the BackupStorage interface for a local filesystem (which can be an NFS mount).
Package filebackupstorage implements the BackupStorage interface for a local filesystem (which can be an NFS mount).
mysqlctl/gcsbackupstorage
Package gcsbackupstorage implements the BackupStorage interface for Google Cloud Storage.
Package gcsbackupstorage implements the BackupStorage interface for Google Cloud Storage.
mysqlctl/grpcmysqlctlclient
Package grpcmysqlctlclient contains the gRPC1 version of the mysqlctl client protocol.
Package grpcmysqlctlclient contains the gRPC1 version of the mysqlctl client protocol.
mysqlctl/grpcmysqlctlserver
Package grpcmysqlctlserver contains the gRPC implementation of the server side of the remote execution of mysqlctl commands.
Package grpcmysqlctlserver contains the gRPC implementation of the server side of the remote execution of mysqlctl commands.
mysqlctl/mysqlctlclient
Package mysqlctlclient contains the generic client side of the remote mysqlctl protocol.
Package mysqlctlclient contains the generic client side of the remote mysqlctl protocol.
mysqlctl/s3backupstorage
Package s3backupstorage implements the BackupStorage interface for AWS S3.
Package s3backupstorage implements the BackupStorage interface for AWS S3.
mysqlctl/tmutils
Package tmutils contains helper methods to deal with the tabletmanagerdata proto3 structures.
Package tmutils contains helper methods to deal with the tabletmanagerdata proto3 structures.
proto/automation
Package automation is a generated protocol buffer package.
Package automation is a generated protocol buffer package.
proto/automationservice
Package automationservice is a generated protocol buffer package.
Package automationservice is a generated protocol buffer package.
proto/binlogdata
Package binlogdata is a generated protocol buffer package.
Package binlogdata is a generated protocol buffer package.
proto/binlogservice
Package binlogservice is a generated protocol buffer package.
Package binlogservice is a generated protocol buffer package.
proto/logutil
Package logutil is a generated protocol buffer package.
Package logutil is a generated protocol buffer package.
proto/mysqlctl
Package mysqlctl is a generated protocol buffer package.
Package mysqlctl is a generated protocol buffer package.
proto/query
Package query is a generated protocol buffer package.
Package query is a generated protocol buffer package.
proto/queryservice
Package queryservice is a generated protocol buffer package.
Package queryservice is a generated protocol buffer package.
proto/replicationdata
Package replicationdata is a generated protocol buffer package.
Package replicationdata is a generated protocol buffer package.
proto/tableacl
Package tableacl is a generated protocol buffer package.
Package tableacl is a generated protocol buffer package.
proto/tabletmanagerdata
Package tabletmanagerdata is a generated protocol buffer package.
Package tabletmanagerdata is a generated protocol buffer package.
proto/tabletmanagerservice
Package tabletmanagerservice is a generated protocol buffer package.
Package tabletmanagerservice is a generated protocol buffer package.
proto/throttlerdata
Package throttlerdata is a generated protocol buffer package.
Package throttlerdata is a generated protocol buffer package.
proto/throttlerservice
Package throttlerservice is a generated protocol buffer package.
Package throttlerservice is a generated protocol buffer package.
proto/topodata
Package topodata is a generated protocol buffer package.
Package topodata is a generated protocol buffer package.
proto/vschema
Package vschema is a generated protocol buffer package.
Package vschema is a generated protocol buffer package.
proto/vtctldata
Package vtctldata is a generated protocol buffer package.
Package vtctldata is a generated protocol buffer package.
proto/vtctlservice
Package vtctlservice is a generated protocol buffer package.
Package vtctlservice is a generated protocol buffer package.
proto/vtgate
Package vtgate is a generated protocol buffer package.
Package vtgate is a generated protocol buffer package.
proto/vtgateservice
Package vtgateservice is a generated protocol buffer package.
Package vtgateservice is a generated protocol buffer package.
proto/vtrpc
Package vtrpc is a generated protocol buffer package.
Package vtrpc is a generated protocol buffer package.
proto/vttest
Package vttest is a generated protocol buffer package.
Package vttest is a generated protocol buffer package.
proto/vtworkerdata
Package vtworkerdata is a generated protocol buffer package.
Package vtworkerdata is a generated protocol buffer package.
proto/vtworkerservice
Package vtworkerservice is a generated protocol buffer package.
Package vtworkerservice is a generated protocol buffer package.
proto/workflow
Package workflow is a generated protocol buffer package.
Package workflow is a generated protocol buffer package.
servenv
Package servenv contains functionality that is common for all Vitess server programs.
Package servenv contains functionality that is common for all Vitess server programs.
sqlannotation
Package sqlannotation provides functions for annotating DML statements with keyspace-id comments and parsing them.
Package sqlannotation provides functions for annotating DML statements with keyspace-id comments and parsing them.
status
Package status defines a few useful functions for our binaries, mainly to link the status page with a vtctld instance.
Package status defines a few useful functions for our binaries, mainly to link the status page with a vtctld instance.
throttler
Package throttler provides a client-side, local throttler which is used to throttle (and actively pace) writes during the resharding process.
Package throttler provides a client-side, local throttler which is used to throttle (and actively pace) writes during the resharding process.
throttler/grpcthrottlerclient
Package grpcthrottlerclient contains the gRPC version of the throttler client protocol.
Package grpcthrottlerclient contains the gRPC version of the throttler client protocol.
throttler/grpcthrottlerserver
Package grpcthrottlerserver contains the gRPC implementation of the server side of the throttler service.
Package grpcthrottlerserver contains the gRPC implementation of the server side of the throttler service.
throttler/throttlerclient
Package throttlerclient defines the generic RPC client interface for the throttler service.
Package throttlerclient defines the generic RPC client interface for the throttler service.
throttler/throttlerclienttest
Package throttlerclienttest contains the testsuite against which each RPC implementation of the throttlerclient interface must be tested.
Package throttlerclienttest contains the testsuite against which each RPC implementation of the throttlerclient interface must be tested.
tlstest
Package tlstest contains utility methods to create test certificates.
Package tlstest contains utility methods to create test certificates.
topo/consultopo
Package consultopo implements topo.Server with consul as the backend.
Package consultopo implements topo.Server with consul as the backend.
topo/etcd2topo
Package etcd2topo implements topo.Server with etcd as the backend.
Package etcd2topo implements topo.Server with etcd as the backend.
topo/events
Package events defines the structures used for events relating directly to individual topology elements, like keyspaces, shards, and tablets.
Package events defines the structures used for events relating directly to individual topology elements, like keyspaces, shards, and tablets.
topo/helpers
Package helpers contains a few utility classes to handle topo.Server objects, and transitions from one topo implementation to another.
Package helpers contains a few utility classes to handle topo.Server objects, and transitions from one topo implementation to another.
topo/memorytopo
Package memorytopo contains an implementation of the topo.Backend API based on an in-process memory map.
Package memorytopo contains an implementation of the topo.Backend API based on an in-process memory map.
topo/test
Package test contains utilities to test topo.Impl implementations.
Package test contains utilities to test topo.Impl implementations.
topo/test/faketopo
Package faketopo contains utitlities for tests that have to interact with a Vitess topology.
Package faketopo contains utitlities for tests that have to interact with a Vitess topology.
topo/topoproto
Package topoproto contains utility functions to deal with the proto3 structures defined in proto/topodata.
Package topoproto contains utility functions to deal with the proto3 structures defined in proto/topodata.
topo/topotests
Package topotests contains all the unit tests for the topo.Server code that is based on topo.Backend.
Package topotests contains all the unit tests for the topo.Server code that is based on topo.Backend.
topotools
Package topotools contains high level functions based on vt/topo and vt/actionnode.
Package topotools contains high level functions based on vt/topo and vt/actionnode.
topotools/events
Package events defines the structures used for events dispatched from the wrangler package.
Package events defines the structures used for events dispatched from the wrangler package.
vitessdriver
Package vitessdriver contains the Vitess Go SQL driver.
Package vitessdriver contains the Vitess Go SQL driver.
vtctl/fakevtctlclient
Package fakevtctlclient contains a fake for the vtctlclient interface.
Package fakevtctlclient contains a fake for the vtctlclient interface.
vtctl/grpcvtctlclient
Package grpcvtctlclient contains the gRPC version of the vtctl client protocol
Package grpcvtctlclient contains the gRPC version of the vtctl client protocol
vtctl/grpcvtctlserver
Package grpcvtctlserver contains the gRPC implementation of the server side of the remote execution of vtctl commands.
Package grpcvtctlserver contains the gRPC implementation of the server side of the remote execution of vtctl commands.
vtctl/vtctlclient
Package vtctlclient contains the generic client side of the remote vtctl protocol.
Package vtctlclient contains the generic client side of the remote vtctl protocol.
vtctl/vtctlclienttest
Package vtctlclienttest contains the testsuite against which each RPC implementation of the vtctlclient interface must be tested.
Package vtctlclienttest contains the testsuite against which each RPC implementation of the vtctlclient interface must be tested.
vtctld
Package vtctld contains all the code to expose a vtctld server based on the provided topo.Server.
Package vtctld contains all the code to expose a vtctld server based on the provided topo.Server.
vterrors
Package vterrors provides helpers for propagating internal errors through the Vitess system (including across RPC boundaries) in a structured way.
Package vterrors provides helpers for propagating internal errors through the Vitess system (including across RPC boundaries) in a structured way.
vtgate
Package vtgate provides query routing rpc services for vttablets.
Package vtgate provides query routing rpc services for vttablets.
vtgate/buffer
Package buffer provides a buffer for MASTER traffic during failovers.
Package buffer provides a buffer for MASTER traffic during failovers.
vtgate/fakerpcvtgateconn
Package fakerpcvtgateconn provides a fake implementation of vtgateconn.Impl that doesn't do any RPC, but uses a local map to return results.
Package fakerpcvtgateconn provides a fake implementation of vtgateconn.Impl that doesn't do any RPC, but uses a local map to return results.
vtgate/gateway
Package gateway contains the routing layer of vtgate.
Package gateway contains the routing layer of vtgate.
vtgate/gatewaytest
Package gatewaytest contains a test suite to run against a Gateway object.
Package gatewaytest contains a test suite to run against a Gateway object.
vtgate/grpcvtgateconn
Package grpcvtgateconn provides gRPC connectivity for VTGate.
Package grpcvtgateconn provides gRPC connectivity for VTGate.
vtgate/grpcvtgateservice
Package grpcvtgateservice provides the gRPC glue for vtgate
Package grpcvtgateservice provides the gRPC glue for vtgate
vtgate/l2vtgate
Package l2vtgate provides the core functionnality of a second-layer vtgate to route queries from an original vtgate to a subset of tablets.
Package l2vtgate provides the core functionnality of a second-layer vtgate to route queries from an original vtgate to a subset of tablets.
vtgate/masterbuffer
Package masterbuffer contains experimental logic to buffer master requests in VTGate.
Package masterbuffer contains experimental logic to buffer master requests in VTGate.
vtgate/planbuilder
Package planbuilder allows you to build execution plans that describe how to fulfill a query that may span multiple keyspaces or shards.
Package planbuilder allows you to build execution plans that describe how to fulfill a query that may span multiple keyspaces or shards.
vtgate/vtgateconntest
Package vtgateconntest provides the test methods to make sure a vtgateconn/vtgateservice pair over RPC works correctly.
Package vtgateconntest provides the test methods to make sure a vtgateconn/vtgateservice pair over RPC works correctly.
vtgate/vtgateservice
Package vtgateservice provides to interface definition for the vtgate service
Package vtgateservice provides to interface definition for the vtgate service
vttablet/customrule/filecustomrule
Package filecustomrule implements static custom rule from a config file
Package filecustomrule implements static custom rule from a config file
vttablet/endtoend
Package endtoend is a test-only package.
Package endtoend is a test-only package.
vttablet/queryservice
Package queryservice contains the interface for the service definition of the Query Service.
Package queryservice contains the interface for the service definition of the Query Service.
vttablet/sandboxconn
Package sandboxconn provides a fake QueryService implementation for tests.
Package sandboxconn provides a fake QueryService implementation for tests.
vttablet/sysloglogger
Package sysloglogger implements an optional plugin that logs all queries to syslog.
Package sysloglogger implements an optional plugin that logs all queries to syslog.
vttablet/tabletconntest
Package tabletconntest provides the test methods to make sure a tabletconn/queryservice pair over RPC works correctly.
Package tabletconntest provides the test methods to make sure a tabletconn/queryservice pair over RPC works correctly.
vttablet/tabletmanager
Package tabletmanager exports the ActionAgent object.
Package tabletmanager exports the ActionAgent object.
vttablet/tabletmanager/events
Package events contains event structs used by the tabletmanager package.
Package events contains event structs used by the tabletmanager package.
vttablet/tabletserver/querytypes
Package querytypes defines internal types used in the APIs to deal with queries.
Package querytypes defines internal types used in the APIs to deal with queries.
vttablet/tabletserver/schema/schematest
Package schematest provides support for testing packages that depend on schema
Package schematest provides support for testing packages that depend on schema
vttablet/tabletserver/splitquery
Package splitquery contains the logic needed for implementing the tabletserver's SplitQuery RPC.
Package splitquery contains the logic needed for implementing the tabletserver's SplitQuery RPC.
vttablet/tabletserver/tabletenv
Package tabletenv maintains environment variables and types that are common for all packages of tabletserver.
Package tabletenv maintains environment variables and types that are common for all packages of tabletserver.
vttablet/tabletserver/txserializer
Package txserializer provides the vttablet hot row protection.
Package txserializer provides the vttablet hot row protection.
vttablet/tabletservermock
Package tabletservermock provides mock interfaces for tabletserver.
Package tabletservermock provides mock interfaces for tabletserver.
vttest
Package vttest provides the functionality to bring up a test cluster.
Package vttest provides the functionality to bring up a test cluster.
vttime
Package vttime contains the definitions and implementations for the Vitess time library.
Package vttime contains the definitions and implementations for the Vitess time library.
worker
Package worker contains the framework, utility methods and core functions for long running actions.
Package worker contains the framework, utility methods and core functions for long running actions.
worker/fakevtworkerclient
Package fakevtworkerclient contains a fake for the vtworkerclient interface.
Package fakevtworkerclient contains a fake for the vtworkerclient interface.
worker/grpcvtworkerclient
Package grpcvtworkerclient contains the gRPC version of the vtworker client protocol.
Package grpcvtworkerclient contains the gRPC version of the vtworker client protocol.
worker/grpcvtworkerserver
Package grpcvtworkerserver contains the gRPC implementation of the server side of the remote execution of vtworker commands.
Package grpcvtworkerserver contains the gRPC implementation of the server side of the remote execution of vtworker commands.
worker/vtworkerclient
Package vtworkerclient contains the generic client side of the remote vtworker protocol.
Package vtworkerclient contains the generic client side of the remote vtworker protocol.
worker/vtworkerclienttest
Package vtworkerclienttest contains the testsuite against which each RPC implementation of the vtworkerclient interface must be tested.
Package vtworkerclienttest contains the testsuite against which each RPC implementation of the vtworkerclient interface must be tested.
workflow/topovalidator
Package topovalidator contains a workflow that validates the topology data.
Package topovalidator contains a workflow that validates the topology data.
wrangler
Package wrangler contains the Wrangler object to manage complex topology actions.
Package wrangler contains the Wrangler object to manage complex topology actions.
wrangler/testlib
Package testlib contains utility methods to include in unit tests to deal with topology common tasks, like fake tablets and action loops.
Package testlib contains utility methods to include in unit tests to deal with topology common tasks, like fake tablets and action loops.
zk

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