Weny Xu
112 lines
2.6 KiB
Protocol Buffer
112 lines
2.6 KiB
Protocol Buffer
syntax = "proto3";
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package greptime.v1.meta;
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option go_package = "github.com/GreptimeTeam/greptime-proto/go/greptime/v1/meta";
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import "greptime/v1/meta/common.proto";
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service Heartbeat {
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// Heartbeat, there may be many contents of the heartbeat, such as:
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// 1. Metadata to be registered to meta server and discoverable by other nodes.
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// 2. Some performance metrics, such as Load, CPU usage, etc.
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// 3. The number of computing tasks being executed.
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rpc Heartbeat(stream HeartbeatRequest) returns (stream HeartbeatResponse) {}
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// Ask leader's endpoint.
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rpc AskLeader(AskLeaderRequest) returns (AskLeaderResponse) {}
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}
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message HeartbeatRequest {
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RequestHeader header = 1;
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// Self peer
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Peer peer = 2;
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// Leader node
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bool is_leader = 3;
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// Actually reported time interval
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TimeInterval report_interval = 4;
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// Node stat
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NodeStat node_stat = 5;
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// Region stats on this node
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repeated RegionStat region_stats = 6;
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// Follower nodes and stats, empty on follower nodes
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repeated ReplicaStat replica_stats = 7;
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MailboxMessage mailbox_message = 8;
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}
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message NodeStat {
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// The read capacity units during this period
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int64 rcus = 1;
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// The write capacity units during this period
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int64 wcus = 2;
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// How many tables on this node
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int64 table_num = 3;
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// How many regions on this node
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int64 region_num = 4;
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double cpu_usage = 5;
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double load = 6;
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// Read disk IO on this node
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double read_io_rate = 7;
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// Write disk IO on this node
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double write_io_rate = 8;
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// Others
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map<string, string> attrs = 100;
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}
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message RegionStat {
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uint64 region_id = 1;
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TableName table_name = 2;
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// The read capacity units during this period
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int64 rcus = 3;
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// The write capacity units during this period
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int64 wcus = 4;
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// Approximate bytes of this region
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int64 approximate_bytes = 5;
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// Approximate number of rows in this region
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int64 approximate_rows = 6;
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// Others
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map<string, string> attrs = 100;
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}
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message ReplicaStat {
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Peer peer = 1;
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bool in_sync = 2;
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bool is_learner = 3;
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}
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message HeartbeatResponse {
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ResponseHeader header = 1;
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MailboxMessage mailbox_message = 2;
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}
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message AskLeaderRequest {
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RequestHeader header = 1;
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}
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message AskLeaderResponse {
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ResponseHeader header = 1;
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Peer leader = 2;
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}
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message MailboxMessage {
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// The id is used to associate request and response.
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uint64 id = 1;
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// The following information plays a bigger role in making messages traceable and facilitating debugging.
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string subject = 2;
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string from = 3;
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string to = 4;
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// The unix timestamp in milliseconds.
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int64 timestamp_millis = 5;
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// The message body.
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oneof payload {
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string json = 6;
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}
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}
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