Clients are classes that provide interfaces for requesting and retrieving data usually from remote server.
All the clients are asynchronous. In other words, a request suspends the current engine::Task and other coroutines are processed on the task processor. The suspended task resumes execution on the task processor after the data was retrieved.
It is a common practice to return references or smart pointers to clients from a component. In such cases:
Classes | |
| class | clients::http::Client |
| HTTP client that returns a HTTP request builder from CreateRequest(). More... | |
| class | storages::postgres::Cluster |
| Interface for executing queries on a cluster of PostgreSQL servers. More... | |
| class | dynamic_config::Source |
| A client for easy dynamic config fetching in components. More... | |
| class | clients::dns::Resolver |
| Caching DNS resolver implementation. More... | |
| class | s3api::Client |
| class | alerts::Storage |
| Storage for active fired alerts. More... | |
| class | baggage::BaggageManager |
| class | dynamic_config::Client |
| Client for the dynamic configs service. More... | |
| class | engine::subprocess::ProcessStarter |
| Creates a new OS subprocess and executes a command in it. More... | |
| class | fs::FsCacheClient |
Class client for storing files in memory Usually retrieved from components::FsCache More... | |
| class | os_signals::Processor |
A client that allows to subscribe to OS signals SIGUSR1 andSIGUSR2`. More... | |
| class | storages::secdist::SecdistConfig |
| Client to retrieve credentials from the components::Secdist. More... | |
| class | storages::secdist::Secdist |
| Client to retrieve credentials from the components::Secdist and to subscribe to their updates. More... | |
| class | utils::statistics::Storage |
| class | storages::mongo::Pool |
| MongoDB client pool. More... | |
| class | storages::redis::Client |
| Redis client. More... | |
| class | storages::redis::SubscribeClient |
| Client that allows subscribing to Redis channel messages. More... | |
| class | storages::clickhouse::Cluster |
| Interface for executing queries on a cluster of ClickHouse servers. More... | |
| class | ugrpc::client::ClientFactory |
| Creates gRPC clients. More... | |
| class | ugrpc::client::GenericClient |
| Allows to talk to gRPC services (generic and normal) using dynamic method names. More... | |
| class | kafka::ConsumerScope |
| RAII class that used as interface for Apache Kafka Consumer interaction and proper lifetime management. More... | |
| class | kafka::Producer |
| Apache Kafka Producer Client. More... | |
| class | urabbitmq::Client |
| Interface for communicating with a RabbitMQ cluster. More... | |
| class | storages::mysql::Cluster |
| Client interface for a cluster of MySQL servers. Usually retrieved from components::MySQL. More... | |
| class | ydb::TopicClient |
| YDB Topic Client. More... | |
