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operations.go
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operations.go
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package definitions
import (
"sort"
)
type Operation struct {
Name string
Namespace string
Local bool
Params []Field
Results []Field
Pairs []Pair
Description string
}
func SortOperations(ops []Operation) []Operation {
sort.SliceStable(ops, func(i, j int) bool {
return ops[i].Name < ops[j].Name
})
return ops
}
var OperationsServiceMap = make(map[string]Operation)
var OperationsService = []Operation{
{
Name: "create",
Namespace: NamespaceService,
Params: []Field{
getField("name"),
},
Results: []Field{
getField("store"),
},
Description: "will create a new storager instance.",
},
{
Name: "delete",
Namespace: NamespaceService,
Params: []Field{
getField("name"),
},
Description: "will delete a storager instance.",
},
{
Name: "get",
Namespace: NamespaceService,
Params: []Field{
getField("name"),
},
Results: []Field{
getField("store"),
},
Description: "will get a valid storager instance for service.",
},
{
Name: "list",
Namespace: NamespaceService,
Results: []Field{
getField("sti"),
},
Description: "will list all storager instances under this service.",
},
}
var OperationsStorageMap = make(map[string]Operation)
var OperationsStorage = []Operation{
// Basic operations.
{
Name: "create",
Namespace: NamespaceStorage,
Local: true,
Params: []Field{
getField("path"),
},
Results: []Field{
getField("o"),
},
Pairs: []Pair{
PairObjectMode,
},
Description: `will create a new object without any api call.
## Behavior
- Create SHOULD NOT send any API call.
- Create SHOULD accept ObjectMode pair as object mode.`,
},
{
Name: "delete",
Namespace: NamespaceStorage,
Params: []Field{
getField("path"),
},
Pairs: []Pair{
PairObjectMode,
},
Description: `will delete an object from service.
## Behavior
- Delete only delete one and only one object.
- Service DON'T NEED to support remove all.
- User NEED to implement remove_all by themself.
- Delete is idempotent.
- Successful delete always return nil error.
- Delete SHOULD never return ObjectNotExist
- Delete DON'T NEED to check the object exist or not.`,
},
{
Name: "metadata",
Namespace: NamespaceStorage,
Local: true,
Results: []Field{
getField("meta"),
},
Description: `will return current storager metadata.`,
},
{
Name: "list",
Namespace: NamespaceStorage,
Params: []Field{
getField("path"),
},
Results: []Field{
getField("oi"),
},
Pairs: []Pair{
PairListMode,
},
Description: `will return list a specific path.
## Behavior
- Service SHOULD support default ListMode.
- Service SHOULD implement ListModeDir without the check for VirtualDir.
- Service DON'T NEED to Stat while in List.`,
},
{
Name: "read",
Namespace: NamespaceStorage,
Params: []Field{
getField("path"),
getField("w"),
},
Results: []Field{
getField("n"),
},
Pairs: []Pair{
PairSize,
PairOffset,
PairIoCallback,
},
Description: `will read the file's data.`,
},
{
Name: "stat",
Namespace: NamespaceStorage,
Params: []Field{
getField("path"),
},
Results: []Field{
getField("o"),
},
Pairs: []Pair{
PairObjectMode,
},
Description: `will stat a path to get info of an object.
## Behavior
- Stat SHOULD accept ObjectMode pair as hints.
- Service COULD have different implementations for different object mode.
- Service SHOULD check if returning ObjectMode is match`,
},
{
Name: "write",
Namespace: NamespaceStorage,
Params: []Field{
getField("path"),
getField("r"),
getField("size"),
},
Results: []Field{
getField("n"),
},
Pairs: []Pair{
PairIoCallback,
},
Description: `will write data into a file.
## Behavior
- Write SHOULD support users pass nil io.Reader.
- Service that has native support for pass nil io.Reader doesn't NEED to check the io.Reader is nil or not.
- Service that doesn't have native support for pass nil io.Reader SHOULD check and create an empty io.Reader if it is nil.
- Write SHOULD NOT return an error as the object exist.
- Service that has native support for overwrite doesn't NEED to check the object exists or not.
- Service that doesn't have native support for overwrite SHOULD check and delete the object if exists.
- A successful write operation SHOULD be complete, which means the object's content and metadata should be the same as specified in write request.
`,
},
// Append related operations.
{
Name: "create_append",
Namespace: NamespaceStorage,
Params: []Field{
getField("path"),
},
Results: []Field{
getField("o"),
},
Pairs: []Pair{},
Description: `will create an append object.
## Behavior
- CreateAppend SHOULD create an appendable object with position 0 and size 0.
- CreateAppend SHOULD NOT return an error as the object exist.
- Service SHOULD check and delete the object if exists.`,
},
{
Name: "write_append",
Namespace: NamespaceStorage,
Params: []Field{
getField("o"),
getField("r"),
getField("size"),
},
Results: []Field{
getField("n"),
},
Description: `will append content to an append object.`,
},
{
Name: "commit_append",
Namespace: NamespaceStorage,
Params: []Field{
getField("o"),
},
Description: `will commit and finish an append process.`,
},
// Block related operations.
{
Name: "create_block",
Namespace: NamespaceStorage,
Params: []Field{
getField("path"),
},
Results: []Field{
getField("o"),
},
Description: `will create a new block object.
## Behavior
- CreateBlock SHOULD NOT return an error as the object exist.
- Service that has native support for overwrite doesn't NEED to check the object exists or not.
- Service that doesn't have native support for overwrite SHOULD check and delete the object if exists.`,
},
{
Name: "write_block",
Namespace: NamespaceStorage,
Params: []Field{
getField("o"),
getField("r"),
getField("size"),
getField("bid"),
},
Results: []Field{
getField("n"),
},
Description: `will write content to a block.`,
},
{
Name: "combine_block",
Namespace: NamespaceStorage,
Params: []Field{
getField("o"),
getField("bids"),
},
Description: `will combine blocks into an object.`,
},
{
Name: "list_block",
Namespace: NamespaceStorage,
Params: []Field{
getField("o"),
},
Results: []Field{
getField("bi"),
},
Description: `will list blocks belong to this object.`,
},
// Copy operations
{
Name: "copy",
Namespace: NamespaceStorage,
Params: []Field{
getField("src"),
getField("dst"),
},
Description: `will copy an Object or multiple object in the service.
## Behavior
- Copy only copy one and only one object.
- Service DON'T NEED to support copy a non-empty directory or copy files recursively.
- User NEED to implement copy a non-empty directory and copy recursively by themself.
- Copy a file to a directory SHOULD return ErrObjectModeInvalid.
- Copy SHOULD NOT return an error as dst object exists.
- Service that has native support for overwrite doesn't NEED to check the dst object exists or not.
- Service that doesn't have native support for overwrite SHOULD check and delete the dst object if exists.
- A successful copy opration should be complete, which means the dst object's content and metadata should be the same as src object.`,
},
// Dir related operations
{
Name: "create_dir",
Namespace: NamespaceStorage,
Params: []Field{
getField("path"),
},
Results: []Field{
getField("o"),
},
Description: `will create a new dir object`,
},
// Fetch related operations.
{
Name: "fetch",
Namespace: NamespaceStorage,
Params: []Field{
getField("path"),
getField("url"),
},
Description: `will fetch from a given url to path.
## Behavior
- Fetch SHOULD NOT return an error as the object exists.
- A successful fetch operation should be complete, which means the object's content and metadata should be the same as requiring from the url.`,
},
// Link related operations
{
Name: "create_link",
Namespace: NamespaceStorage,
Params: []Field{
getField("path"),
getField("target"),
},
Results: []Field{
getField("o"),
},
Description: `Will create a link object.
# Behavior
- path and target COULD be relative or absolute path.
- If target not exists, CreateLink will still create a link object to path.
- If path exists:
- If path is a symlink object, CreateLink will remove the symlink object and create a new link object to path.
- If path is not a symlink object, CreateLink will return an ErrObjectModeInvalid error when the service does not support overwrite.
- A link object COULD be returned in Stat or List.
- CreateLink COULD implement virtual_link feature when service without native support.
- Users SHOULD enable this feature by themselves.`,
},
// Move related operations
{
Name: "move",
Namespace: NamespaceStorage,
Params: []Field{
getField("src"),
getField("dst"),
},
Description: `will move an object in the service.
## Behavior
- Move only move one and only one object.
- Service DON'T NEED to support move a non-empty directory.
- User NEED to implement move a non-empty directory by themself.
- Move a file to a directory SHOULD return ErrObjectModeInvalid.
- Move SHOULD NOT return an error as dst object exists.
- Service that has native support for overwrite doesn't NEED to check the dst object exists or not.
- Service that doesn't have native support for overwrite SHOULD check and delete the dst object if exists.
- A successful move operation SHOULD be complete, which means the dst object's content and metadata should be the same as src object.`,
},
// Multipart related operations.
{
Name: "create_multipart",
Namespace: NamespaceStorage,
Params: []Field{
getField("path"),
},
Results: []Field{
getField("o"),
},
Description: `will create a new multipart.
## Behavior
- CreateMultipart SHOULD NOT return an error as the object exists.`,
},
{
Name: "write_multipart",
Namespace: NamespaceStorage,
Params: []Field{
getField("o"),
getField("r"),
getField("size"),
getField("index"),
},
Results: []Field{
getField("n"),
getField("part"),
},
Description: `will write content to a multipart.`,
},
{
Name: "complete_multipart",
Namespace: NamespaceStorage,
Params: []Field{
getField("o"),
getField("parts"),
},
Description: `will complete a multipart upload and construct an Object.`,
},
{
Name: "list_multipart",
Namespace: NamespaceStorage,
Params: []Field{
getField("o"),
},
Results: []Field{
getField("pi"),
},
Description: `will list parts belong to this multipart.`,
},
// Page related operations
{
Name: "create_page",
Namespace: NamespaceStorage,
Params: []Field{
getField("path"),
},
Results: []Field{
getField("o"),
},
Description: `will create a new page object.
## Behavior
- CreatePage SHOULD NOT return an error as the object exists.`,
},
{
Name: "write_page",
Namespace: NamespaceStorage,
Params: []Field{
getField("o"),
getField("r"),
getField("size"),
getField("offset"),
},
Results: []Field{
getField("n"),
},
Description: `will write content to specific offset.`,
},
// Query sign HTTP related operations.
{
Name: "query_sign_http_read",
Namespace: NamespaceStorage,
Params: []Field{
getField("path"),
getField("expire"),
},
Results: []Field{
getField("req"),
},
Description: "will read data from the file by using query parameters to authenticate requests.",
},
{
Name: "query_sign_http_write",
Namespace: NamespaceStorage,
Params: []Field{
getField("path"),
getField("size"),
getField("expire"),
},
Results: []Field{
getField("req"),
},
Description: "will write data into a file by using query parameters to authenticate requests.",
},
{
Name: "query_sign_http_delete",
Namespace: NamespaceStorage,
Params: []Field{
getField("path"),
getField("expire"),
},
Results: []Field{
getField("req"),
},
Description: "will delete an object from service by using query parameters to authenticate requests.",
},
{
Name: "query_sign_http_create_multipart",
Namespace: NamespaceStorage,
Params: []Field{
getField("path"),
getField("expire"),
},
Results: []Field{
getField("req"),
},
Description: "will create a new multipart by using query parameters to authenticate requests.",
},
{
Name: "query_sign_http_write_multipart",
Namespace: NamespaceStorage,
Params: []Field{
getField("o"),
getField("size"),
getField("index"),
getField("expire"),
},
Results: []Field{
getField("req"),
},
Description: "will write content to a multipart by using query parameters to authenticate requests.",
},
{
Name: "query_sign_http_list_multipart",
Namespace: NamespaceStorage,
Params: []Field{
getField("o"),
getField("expire"),
},
Results: []Field{
getField("req"),
},
Description: "will list parts belong to this multipart by using query parameters to authenticate requests.",
},
{
Name: "query_sign_http_complete_multipart",
Namespace: NamespaceStorage,
Params: []Field{
getField("o"),
getField("parts"),
getField("expire"),
},
Results: []Field{
getField("req"),
},
Description: "will complete a multipart upload and construct an Object by using query parameters to authenticate requests.",
},
}
func init() {
for idx, ops := range [][]Operation{OperationsService, OperationsStorage} {
for k := range ops {
ops[k].Params = append(ops[k].Params, getField("pairs"))
if !ops[k].Local {
ops[k].Results = append(ops[k].Results, getField("err"))
}
if idx == 0 {
OperationsServiceMap[ops[k].Name] = ops[k]
} else {
OperationsStorageMap[ops[k].Name] = ops[k]
}
}
}
}