This commit refactors the source configuration and loading mechanism to
use a dynamic registration pattern. Each source package now registers
itself with a central registry via its init() function.
The server configuration code uses this registry to decode and
initialize sources, decoupling it from specific source implementations
and simplifying the addition of new sources.
Key changes:
- Introduced `sources.Register()` and `newConfig()` constructor in each
source package.
- Moved source package imports to `cmd/root.go` as blank imports to
trigger `init()` functions for self-registration.
- Removed direct imports of specific source packages from
`internal/server/config.go`.
- Renamed `SourceKind` constants to `Kind` within each source package.
- Updated tests to use the new `Kind` constants and reflect registration
changes.
---------
Co-authored-by: Yuan Teoh <yuanteoh@google.com>
This only checks within `SourceConfig`, `ToolConfig`, and
`AuthSourceConfig`.
Error when an unknown field is provided:
`2025-01-27T22:43:46.988401-08:00 ERROR "unable to parse tool file at
\"tools.yaml\": unable to parse as \"cloud-sql-postgres\": [2:1] unknown
field \"extra\"\n 1 | database: test_database\n> 2 | extra: here\n ^\n 3
| instance: toolbox-cloudsql\n 4 | kind: cloud-sql-postgres\n 5 |
password: postgres\n 6 | "`
Error when a required field is not provided:
`2025-01-27T17:49:47.584846-08:00 ERROR "unable to parse tool file at
\"tools.yaml\": validation failed: Key: 'Config.Region' Error:Field
validation for 'Region' failed on the 'required' tag"`
---------
Co-authored-by: Kurtis Van Gent <31518063+kurtisvg@users.noreply.github.com>
Add Spanner source and tool.
Spanner source is initialize with the following config:
```
sources:
my-spanner-source:
kind: spanner
project: my-project-name
instance: my-instance-name
database: my_db
# dialect: postgresql # The default dialect is google_standard_sql.
```
Spanner tool (with gsql dialect) is initialize with the following
config.
```
tools:
get_flight_by_id:
kind: spanner
source: my-cloud-sql-source
description: >
Use this tool to list all airports matching search criteria. Takes
at least one of country, city, name, or all and returns all matching
airports. The agent can decide to return the results directly to
the user.
statement: "SELECT * FROM flights WHERE id = @id"
parameters:
- name: id
type: int
description: 'id' represents the unique ID for each flight.
```
Spanner tool (with postgresql dialect) is initialize with the following
config.
```
tools:
get_flight_by_id:
kind: spanner
source: my-cloud-sql-source
description: >
Use this tool to list all airports matching search criteria. Takes
at least one of country, city, name, or all and returns all matching
airports. The agent can decide to return the results directly to
the user.
statement: "SELECT * FROM flights WHERE id = $1"
parameters:
- name: id
type: int
description: 'id' represents the unique ID for each flight.
```
Note: the only difference in config for both dialects is the sql
statement.
---------
Co-authored-by: Kurtis Van Gent <31518063+kurtisvg@users.noreply.github.com>
