mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
doc: remove proto in rfc, link to proto file in codebase
This commit is contained in:
Xiang Li
parent
d9d7137ea3
commit
39ed73c290
@ -30,7 +30,9 @@
|
||||
|
||||
## Protobuf Defined API
|
||||
|
||||
[protobuf](./v3api.proto)
|
||||
[api protobuf](../../etcdserver/etcdserverpb/rpc.proto)
|
||||
|
||||
[kv protobuf](../../storage/storagepb/kv.proto)
|
||||
|
||||
## Examples
|
||||
|
||||
|
||||
@ -1,290 +0,0 @@
|
||||
syntax = "proto3";
|
||||
|
||||
service KV {
|
||||
// Range gets the keys in the range from the store.
|
||||
rpc Range(RangeRequest) returns (RangeResponse) {}
|
||||
|
||||
// Put puts the given key into the store.
|
||||
// A put request increases the revision of the store,
|
||||
// and generates one event in the event history.
|
||||
rpc Put(PutRequest) returns (PutResponse) {}
|
||||
|
||||
// Delete deletes the given range from the store.
|
||||
// A delete request increase the revision of the store,
|
||||
// and generates one event in the event history.
|
||||
rpc DeleteRange(DeleteRangeRequest) returns (DeleteRangeResponse) {}
|
||||
|
||||
// Txn processes all the requests in one transaction.
|
||||
// A txn request increases the revision of the store,
|
||||
// and generates events with the same revision in the event history.
|
||||
// It is not allowed to modify the same key several times within one txn.
|
||||
rpc Txn(TxnRequest) returns (TxnResponse) {}
|
||||
|
||||
// Compact compacts the event history in etcd. User should compact the
|
||||
// event history periodically, or it will grow infinitely.
|
||||
rpc Compact(CompactionRequest) returns (CompactionResponse) {}
|
||||
}
|
||||
|
||||
service watch {
|
||||
// Watch watches the events happening or happened. Both input and output
|
||||
// are stream. One watch rpc can watch for multiple keys or prefixs and
|
||||
// get a stream of events. The whole events history can be watched unless
|
||||
// compacted.
|
||||
rpc Watch(stream WatchRequest) returns (stream WatchResponse) {}
|
||||
}
|
||||
|
||||
service Lease {
|
||||
// LeaseCreate creates a lease. A lease has a TTL. The lease will expire if the
|
||||
// server does not receive a keepAlive within TTL from the lease holder.
|
||||
// All keys attached to the lease will be expired and deleted if the lease expires.
|
||||
// The key expiration generates an event in event history.
|
||||
rpc LeaseCreate(LeaseCreateRequest) returns (LeaseCreateResponse) {}
|
||||
|
||||
// LeaseRevoke revokes a lease. All the key attached to the lease will be expired and deleted.
|
||||
rpc LeaseRevoke(LeaseRevokeRequest) returns (LeaseRevokeResponse) {}
|
||||
|
||||
// KeepAlive keeps the lease alive.
|
||||
rpc LeaseKeepAlive(stream LeaseKeepAliveRequest) returns (stream LeaseKeepAliveResponse) {}
|
||||
|
||||
// TODO(xiangli) List all existing Leases?
|
||||
// TODO(xiangli) Get details information (expirations, leased keys, etc.) of a lease?
|
||||
}
|
||||
|
||||
message ResponseHeader {
|
||||
// an error type message?
|
||||
string error = 1;
|
||||
uint64 cluster_id = 2;
|
||||
uint64 member_id = 3;
|
||||
// revision of the store when the request was applied.
|
||||
int64 revision = 4;
|
||||
// term of raft when the request was applied.
|
||||
uint64 raft_term = 5;
|
||||
}
|
||||
|
||||
message RangeRequest {
|
||||
// if the range_end is not given, the request returns the key.
|
||||
bytes key = 1;
|
||||
// if the range_end is given, it gets the keys in range [key, range_end).
|
||||
bytes range_end = 2;
|
||||
// limit the number of keys returned.
|
||||
int64 limit = 3;
|
||||
// range over the store at the given revision.
|
||||
// if revision is less or equal to zero, range over the newest store.
|
||||
// if the revision has been compacted, ErrCompaction will be returned in
|
||||
// response.
|
||||
int64 revision = 4;
|
||||
}
|
||||
|
||||
message RangeResponse {
|
||||
ResponseHeader header = 1;
|
||||
repeated storagepb.KeyValue kvs = 2;
|
||||
// more indicates if there are more keys to return in the requested range.
|
||||
bool more = 3;
|
||||
}
|
||||
|
||||
message PutRequest {
|
||||
bytes key = 1;
|
||||
bytes value = 2;
|
||||
int64 lease = 3;
|
||||
}
|
||||
|
||||
message PutResponse {
|
||||
ResponseHeader header = 1;
|
||||
}
|
||||
|
||||
message DeleteRangeRequest {
|
||||
// if the range_end is not given, the request deletes the key.
|
||||
bytes key = 1;
|
||||
// if the range_end is given, it deletes the keys in range [key, range_end).
|
||||
bytes range_end = 2;
|
||||
}
|
||||
|
||||
message DeleteRangeResponse {
|
||||
ResponseHeader header = 1;
|
||||
}
|
||||
|
||||
message RequestUnion {
|
||||
oneof request {
|
||||
RangeRequest request_range = 1;
|
||||
PutRequest request_put = 2;
|
||||
DeleteRangeRequest request_delete_range = 3;
|
||||
}
|
||||
}
|
||||
|
||||
message ResponseUnion {
|
||||
oneof response {
|
||||
RangeResponse response_range = 1;
|
||||
PutResponse response_put = 2;
|
||||
DeleteRangeResponse response_delete_range = 3;
|
||||
}
|
||||
}
|
||||
|
||||
message Compare {
|
||||
enum CompareResult {
|
||||
EQUAL = 0;
|
||||
GREATER = 1;
|
||||
LESS = 2;
|
||||
}
|
||||
enum CompareTarget {
|
||||
VERSION = 0;
|
||||
CREATE = 1;
|
||||
MOD = 2;
|
||||
VALUE= 3;
|
||||
}
|
||||
CompareResult result = 1;
|
||||
CompareTarget target = 2;
|
||||
// key path
|
||||
bytes key = 3;
|
||||
oneof target_union {
|
||||
// version of the given key
|
||||
int64 version = 4;
|
||||
// create revision of the given key
|
||||
int64 create_revision = 5;
|
||||
// last modified revision of the given key
|
||||
int64 mod_revision = 6;
|
||||
// value of the given key
|
||||
bytes value = 7;
|
||||
}
|
||||
}
|
||||
|
||||
// If the comparisons succeed, then the success requests will be processed in order,
|
||||
// and the response will contain their respective responses in order.
|
||||
// If the comparisons fail, then the failure requests will be processed in order,
|
||||
// and the response will contain their respective responses in order.
|
||||
|
||||
// From google paxosdb paper:
|
||||
// Our implementation hinges around a powerful primitive which we call MultiOp. All other database
|
||||
// operations except for iteration are implemented as a single call to MultiOp. A MultiOp is applied atomically
|
||||
// and consists of three components:
|
||||
// 1. A list of tests called guard. Each test in guard checks a single entry in the database. It may check
|
||||
// for the absence or presence of a value, or compare with a given value. Two different tests in the guard
|
||||
// may apply to the same or different entries in the database. All tests in the guard are applied and
|
||||
// MultiOp returns the results. If all tests are true, MultiOp executes t op (see item 2 below), otherwise
|
||||
// it executes f op (see item 3 below).
|
||||
// 2. A list of database operations called t op. Each operation in the list is either an insert, delete, or
|
||||
// lookup operation, and applies to a single database entry. Two different operations in the list may apply
|
||||
// to the same or different entries in the database. These operations are executed
|
||||
// if guard evaluates to
|
||||
// true.
|
||||
// 3. A list of database operations called f op. Like t op, but executed if guard evaluates to false.
|
||||
message TxnRequest {
|
||||
repeated Compare compare = 1;
|
||||
repeated RequestUnion success = 2;
|
||||
repeated RequestUnion failure = 3;
|
||||
}
|
||||
|
||||
message TxnResponse {
|
||||
ResponseHeader header = 1;
|
||||
bool succeeded = 2;
|
||||
repeated ResponseUnion responses = 3;
|
||||
}
|
||||
|
||||
message KeyValue {
|
||||
bytes key = 1;
|
||||
int64 create_revision = 2;
|
||||
// mod_revision is the last modified revision of the key.
|
||||
int64 mod_revision = 3;
|
||||
// version is the version of the key. A deletion resets
|
||||
// the version to zero and any modification of the key
|
||||
// increases its version.
|
||||
int64 version = 4;
|
||||
bytes value = 5;
|
||||
// lease is the ID of the lease that attached to key.
|
||||
// When the attached lease expires, the key will be deleted.
|
||||
int64 lease = 6;
|
||||
}
|
||||
|
||||
message WatchRequest {
|
||||
// the key to be watched
|
||||
bytes key = 1;
|
||||
// the prefix to be watched.
|
||||
bytes prefix = 2;
|
||||
// start_revision is an optional revision (including) to watch from. No start_revision is "now".
|
||||
int64 start_revision = 3;
|
||||
// TODO: support Range watch?
|
||||
// TODO: support notification every time interval or revision increase?
|
||||
// TODO: support cancel watch if the server cannot reach with majority?
|
||||
}
|
||||
|
||||
message WatchResponse {
|
||||
ResponseHeader header = 1;
|
||||
// TODO: support batched events response?
|
||||
storagepb.Event event = 2;
|
||||
}
|
||||
|
||||
message Event {
|
||||
enum EventType {
|
||||
PUT = 0;
|
||||
DELETE = 1;
|
||||
EXPIRE = 2;
|
||||
}
|
||||
EventType event_type = 1;
|
||||
// a put event contains the current key-value
|
||||
// a delete/expire event contains the previous
|
||||
// key-value
|
||||
KeyValue kv = 2;
|
||||
}
|
||||
|
||||
// Compaction compacts the kv store upto the given revision (including).
|
||||
// It removes the old versions of a key. It keeps the newest version of
|
||||
// the key even if its latest modification revision is smaller than the given
|
||||
// revision.
|
||||
message CompactionRequest {
|
||||
int64 revision = 1;
|
||||
}
|
||||
|
||||
message CompactionResponse {
|
||||
ResponseHeader header = 1;
|
||||
}
|
||||
|
||||
message LeaseCreateRequest {
|
||||
// advisory ttl in seconds
|
||||
int64 ttl = 1;
|
||||
}
|
||||
|
||||
message LeaseCreateResponse {
|
||||
ResponseHeader header = 1;
|
||||
int64 lease_id = 2;
|
||||
// server decided ttl in second
|
||||
int64 ttl = 3;
|
||||
string error = 4;
|
||||
}
|
||||
|
||||
message LeaseRevokeRequest {
|
||||
int64 lease_id = 1;
|
||||
}
|
||||
|
||||
message LeaseRevokeResponse {
|
||||
ResponseHeader header = 1;
|
||||
}
|
||||
|
||||
message LeaseTxnRequest {
|
||||
TxnRequest request = 1;
|
||||
repeated LeaseAttachRequest success = 2;
|
||||
repeated LeaseAttachRequest failure = 3;
|
||||
}
|
||||
|
||||
message LeaseTxnResponse {
|
||||
ResponseHeader header = 1;
|
||||
TxnResponse response = 2;
|
||||
repeated LeaseAttachResponse attach_responses = 3;
|
||||
}
|
||||
|
||||
message LeaseAttachRequest {
|
||||
int64 lease_id = 1;
|
||||
bytes key = 2;
|
||||
}
|
||||
|
||||
message LeaseAttachResponse {
|
||||
ResponseHeader header = 1;
|
||||
}
|
||||
|
||||
message LeaseKeepAliveRequest {
|
||||
int64 lease_id = 1;
|
||||
}
|
||||
|
||||
message LeaseKeepAliveResponse {
|
||||
ResponseHeader header = 1;
|
||||
int64 lease_id = 2;
|
||||
int64 ttl = 3;
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user