mirror of
https://github.com/extism/extism.git
synced 2026-01-09 13:57:55 -05:00
d47af24552
- Adds `memory.max_var_bytes` to the manifest to limit the number of bytes allowed to be stored in Extism vars - if `max_var_bytes` is set to 0 then vars are disabled. - Adds some builder functions to `MemoryOptions` struct - Sets the default var store size to 1mb - Includes a test to make sure `var_set` returns an error when the limit is reached
231 lines
6.4 KiB
JSON
231 lines
6.4 KiB
JSON
{
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"$schema": "http://json-schema.org/draft-07/schema#",
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"title": "Manifest",
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"description": "The `Manifest` type is used to configure the runtime and specify how to load modules.",
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"type": "object",
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"properties": {
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"allowed_hosts": {
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"description": "Specifies which hosts may be accessed via HTTP, if this is empty then no hosts may be accessed. Wildcards may be used.",
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"default": null,
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"type": [
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"array",
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"null"
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],
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"items": {
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"type": "string"
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}
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},
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"allowed_paths": {
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"description": "Specifies which paths should be made available on disk when using WASI. This is a mapping from the path on disk to the path it should be available inside the plugin. For example, `\".\": \"/tmp\"` would mount the current directory as `/tmp` inside the module",
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"default": null,
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"type": [
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"object",
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"null"
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],
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"additionalProperties": {
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"type": "string"
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}
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},
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"config": {
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"description": "Config values are made accessible using the PDK `extism_config_get` function",
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"default": {},
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"type": "object",
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"additionalProperties": {
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"type": "string"
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}
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},
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"memory": {
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"description": "Memory options",
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"default": {
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"max_http_response_bytes": null,
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"max_pages": null,
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"max_var_bytes": null
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},
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"allOf": [
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{
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"$ref": "#/definitions/MemoryOptions"
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}
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]
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},
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"timeout_ms": {
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"description": "The plugin timeout in milliseconds",
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"default": null,
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"type": [
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"integer",
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"null"
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],
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"format": "uint64",
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"minimum": 0.0
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},
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"wasm": {
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"description": "WebAssembly modules, the `main` module should be named `main` or listed last",
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"default": [],
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"type": "array",
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"items": {
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"$ref": "#/definitions/Wasm"
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}
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}
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},
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"additionalProperties": false,
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"definitions": {
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"MemoryOptions": {
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"description": "Configure memory settings",
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"type": "object",
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"properties": {
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"max_http_response_bytes": {
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"description": "The maximum number of bytes allowed in an HTTP response",
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"default": null,
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"type": [
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"integer",
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"null"
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],
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"format": "uint64",
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"minimum": 0.0
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},
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"max_pages": {
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"description": "The max number of WebAssembly pages that should be allocated",
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"type": [
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"integer",
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"null"
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],
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"format": "uint32",
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"minimum": 0.0
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},
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"max_var_bytes": {
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"description": "The maximum number of bytes allowed to be used by plugin vars. Setting this to 0 will disable Extism vars. The default value is 1mb.",
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"default": 1048576,
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"type": [
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"integer",
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"null"
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],
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"format": "uint64",
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"minimum": 0.0
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}
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},
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"additionalProperties": false
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},
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"Wasm": {
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"description": "The `Wasm` type specifies how to access a WebAssembly module",
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"anyOf": [
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{
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"description": "From disk",
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"type": "object",
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"required": [
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"path"
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],
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"properties": {
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"hash": {
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"description": "Module hash, if the data loaded from disk or via HTTP doesn't match an error will be raised",
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"type": [
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"string",
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"null"
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]
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},
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"name": {
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"description": "Module name, this is used by Extism to determine which is the `main` module",
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"type": [
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"string",
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"null"
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]
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},
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"path": {
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"type": "string"
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}
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},
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"additionalProperties": false
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},
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{
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"description": "From memory",
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"type": "object",
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"required": [
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"data"
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],
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"properties": {
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"data": {
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"type": [
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"string",
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"object"
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],
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"required": [
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"len",
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"ptr"
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],
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"properties": {
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"len": {
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"type": "integer",
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"format": "uint64",
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"minimum": 0.0
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},
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"ptr": {
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"type": "integer",
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"format": "uint64",
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"minimum": 0.0
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}
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},
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"additionalProperties": false
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},
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"hash": {
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"description": "Module hash, if the data loaded from disk or via HTTP doesn't match an error will be raised",
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"type": [
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"string",
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"null"
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]
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},
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"name": {
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"description": "Module name, this is used by Extism to determine which is the `main` module",
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"type": [
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"string",
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"null"
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]
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}
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},
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"additionalProperties": false
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},
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{
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"description": "Via HTTP",
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"type": "object",
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"required": [
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"url"
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],
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"properties": {
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"hash": {
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"description": "Module hash, if the data loaded from disk or via HTTP doesn't match an error will be raised",
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"type": [
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"string",
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"null"
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]
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},
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"headers": {
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"description": "Request headers",
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"default": {},
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"type": "object",
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"additionalProperties": {
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"type": "string"
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}
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},
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"method": {
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"description": "Request method",
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"type": [
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"string",
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"null"
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]
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},
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"name": {
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"description": "Module name, this is used by Extism to determine which is the `main` module",
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"type": [
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"string",
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"null"
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]
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},
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"url": {
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"description": "The request URL",
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"type": "string"
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}
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},
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"additionalProperties": false
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}
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]
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}
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}
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}
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