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tarantool-etcd-5zx iproto-impl: etcd_maintenance_hash vs Maintenance.Hash
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| Created by | Eugene Blikh |
| Owner | bigbes@gmail.com |
| Created | 2026-05-19T14:54:37Z |
| Updated | 2026-07-17T14:27:36Z |
Wrap the existing handler maintenance.hash (already invoked by gRPC/JSON via defs.lua route etcdserverpb.Maintenance.Hash) as a Lua global etcd_maintenance_hash callable via iproto CALL. Mechanical change in app/etcd/api.lua: add rawset(_G, 'etcd_maintenance_hash', wrap('maintenance', 'hash')) under the appropriate service block; append 'etcd_maintenance_hash' to the funcs table so box.schema.func.create plus guest grant runs at role apply; document the wrapper in the module-level LDoc comment. If Maintenance.Hash returns UNIMPLEMENTED today, the wrapper still gets added so the iproto caller observes the same UNIMPLEMENTED error gRPC would return. Election.Observe is server-streaming over gRPC; iproto has no stream primitive, so propose a polling shape (observe_create/_pull/_cancel) mirroring the Watch precedent at api.lua:81-83.
etcd_maintenance_hash is callable from net.box:call('etcd_maintenance_hash', {req}) with no Lua error before handler dispatch. Successful request shape produces same successful response shape as gRPC. box.schema.func.create plus guest grant idempotent on role re-apply.
Epic tarantool-etcd-w8q. Handler at app/etcd/maintenance.lua.
No outgoing dependencies.
tarantool-etcd-216
— iproto-verify: etcd_maintenance_hash vs Maintenance.Hash
blocks
| id | tarantool-etcd-5zx |
| content_hash | 89ee417ec71ddfded73ee7497c3e7938ddf799b0994f05df2b0d46281d429ce6 |
| title | iproto-impl: etcd_maintenance_hash vs Maintenance.Hash |
| description | Wrap the existing handler maintenance.hash (already invoked by gRPC/JSON via defs.lua route etcdserverpb.Maintenance.Hash) as a Lua global etcd_maintenance_hash callable via iproto CALL. Mechanical change in app/etcd/api.lua: add rawset(_G, 'etcd_maintenance_hash', wrap('maintenance', 'hash')) under the appropriate service block; append 'etcd_maintenance_hash' to the funcs table so box.schema.func.create plus guest grant runs at role apply; document the wrapper in the module-level LDoc comment. If Maintenance.Hash returns UNIMPLEMENTED today, the wrapper still gets added so the iproto caller observes the same UNIMPLEMENTED error gRPC would return. Election.Observe is server-streaming over gRPC; iproto has no stream primitive, so propose a polling shape (observe_create/_pull/_cancel) mirroring the Watch precedent at api.lua:81-83. |
| design | |
| acceptance_criteria | etcd_maintenance_hash is callable from net.box:call('etcd_maintenance_hash', {req}) with no Lua error before handler dispatch. Successful request shape produces same successful response shape as gRPC. box.schema.func.create plus guest grant idempotent on role re-apply. |
| notes | Epic tarantool-etcd-w8q. Handler at app/etcd/maintenance.lua. |
| status | open |
| priority | 3 |
| issue_type | task |
| assignee | NULL |
| estimated_minutes | NULL |
| created_at | 2026-05-19T14:54:37Z |
| created_by | Eugene Blikh |
| owner | bigbes@gmail.com |
| updated_at | 2026-07-17T14:27:36Z |
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| issue_id | tarantool-etcd-5zx |
| label | milestone:m4-iproto-parity |
| id | 593c1dd8-16d4-5d72-bb2d-c46c0fef5bff |
| issue_id | tarantool-etcd-216 |
| type | blocks |
| created_at | 2026-05-19T17:54:37Z |
| created_by | Eugene Blikh |
| metadata | <binary> |
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| depends_on_issue_id | tarantool-etcd-5zx |
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| id | 0817368a-e1a5-5a09-a447-ac2f9d34f5f6 |
| issue_id | tarantool-etcd-5zx |
| event_type | label_added |
| actor | Eugene Blikh |
| old_value | NULL |
| new_value | NULL |
| comment | Added label: milestone:m4-iproto-parity |
| created_at | 2026-05-21T14:37:15Z |
| id | e3ed2e0c-31c5-5daf-b59c-634dfe7dd393 |
| issue_id | tarantool-etcd-5zx |
| event_type | created |
| actor | Eugene Blikh |
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| comment | NULL |
| created_at | 2026-05-19T17:54:36Z |
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