api

package
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 Go to latest Published: Jul 21, 2022 License: Apache-2.0, BSD-2-Clause, BSD-3-Clause, + 1 more Imports: 34 Imported by: 0

Documentation

Overview

Package api provides general purpose tools for implementing the Traffic Ops API.

Index

Constants

View Source 
const (
	DBContextKey           = "db"
	ConfigContextKey       = "context"
	ReqIDContextKey        = "reqid"
	APIRespWrittenKey      = "respwritten"
	PathParamsKey          = "pathParams"
	TrafficVaultContextKey = "tv"
)

Common context.Context value keys.

View Source 
const (
	MojoCookie  = "mojoCookie"
	AccessToken = "access_token"
)
View Source 
const (
	AsyncSucceeded = "SUCCEEDED"
	AsyncFailed    = "FAILED"
	AsyncPending   = "PENDING"
)
View Source 
const (
	ApiChange = "APICHANGE"
	Updated   = "Updated"
	Created   = "Created"
	Deleted   = "Deleted"
)
View Source 
const CurrentAsyncEndpoint = "/api/4.0/async_status/"
View Source 
const NilRequestError = errorConstant("method called on APIInfo with nil request")

NilRequestError is returned by APIInfo methods when the request internally referred to by the APIInfo cannot be found.

View Source 
const NilTransactionError = errorConstant("method called on APIInfo with nil transaction")

NilTransactionError is returned by APIInfo methods when the transaction internally referred to by the APIInfo cannot be found.

View Source 
const ResourceModifiedError = errorConstant("resource was modified since the time specified by the request headers")

ResourceModifiedError is a user-safe error that indicates a precondition failure.

Variables

This section is empty.

Functions

func AddLastModifiedHdr 

func AddLastModifiedHdr(w http.ResponseWriter, t time.Time)

AddLastModifiedHdr adds the "last modified" header to the response.

func AddUserToReq 

func AddUserToReq(r *http.Request, u auth.CurrentUser)

func AllParams 

func AllParams(req *http.Request, required []string, ints []string) (map[string]string, map[string]int, error, error, int)

AllParams takes the request (in which the router has inserted context for path parameters), and an array of parameters required to be integers, and returns the map of combined parameters, and the map of int parameters; or a user or system error and the HTTP error code. The intParams may be nil if no integer parameters are required. This is a helper for the common case; not using this in unusual cases is perfectly acceptable.

func CheckIfUnModified 

func CheckIfUnModified(h http.Header, tx *sqlx.Tx, ID int, tableName string) (error, error, int)

CheckIfUnModified checks to see if the resource was modified since the "If-Unmodified-Since" header value in the request. In case it was, the 412 error code is returned. If some other error was encountered while checking, the appropriate error code along with error details is returned. If the resource was not modified since the specified time, the UPDATE proceeds in the normal fashion.

func CheckIfUnModifiedByName 

func CheckIfUnModifiedByName(h http.Header, tx *sqlx.Tx, name string, tableName string) (error, error, int)

CheckIfUnModifiedByName checks to see if the resource was modified since the "If-Unmodified-Since" header value in the request. In case it was, the 412 error code is returned. If some other error was encountered while checking, the appropriate error code along with error details is returned. If the resource was not modified since the specified time, the UPDATE proceeds in the normal fashion.

func CreateChangeLog 

func CreateChangeLog(level string, action string, i Identifier, user *auth.CurrentUser, tx *sql.Tx) error

func CreateChangeLogBuildMsg 

func CreateChangeLogBuildMsg(level string, action string, user *auth.CurrentUser, tx *sql.Tx, objType string, auditName string, keys map[string]interface{}) error

func CreateChangeLogRawErr 

func CreateChangeLogRawErr(level string, msg string, user *auth.CurrentUser, tx *sql.Tx) error

func CreateChangeLogRawTx 

func CreateChangeLogRawTx(level string, msg string, user *auth.CurrentUser, tx *sql.Tx)

func CreateDeprecationAlerts 

func CreateDeprecationAlerts(alternative *string) tc.Alerts

CreateDeprecationAlerts creates a deprecation notice with an optional alternative route suggestion.

func CreateHandler 

func CreateHandler(creator Creator) http.HandlerFunc

CreateHandler creates a handler function from the pointer to a struct implementing the Creator interface 

this generic handler encapsulates the logic for handling:
*current user
*decoding and validating the struct
*change log entry
*forming and writing the body over the wire

func DefaultSort 

func DefaultSort(readerType *APIInfo, param string)

DefaultSort sorts alphabetically for a given readerType (eg: TOCDN, TODeliveryService, TOOrigin etc).

func DeleteHandler 

func DeleteHandler(deleter Deleter) http.HandlerFunc

DeleteHandler creates a handler function from the pointer to a struct implementing the Deleter interface 

this generic handler encapsulates the logic for handling:
*fetching the id from the path parameter
*current user
*change log entry
*forming and writing the body over the wire

func DeprecatedDeleteHandler 

func DeprecatedDeleteHandler(deleter Deleter, alternative *string) http.HandlerFunc

DeprecatedDeleteHandler creates a handler function from the pointer to a struct implementing the Deleter interface with a optional deprecation notice 

this generic handler encapsulates the logic for handling:
*fetching the id from the path parameter
*current user
*change log entry
*forming and writing the body over the wire

func DeprecatedReadHandler 

func DeprecatedReadHandler(reader Reader, alternative *string) http.HandlerFunc

DeprecatedReadHandler creates a net/http.HandlerFunc for the passed Reader object, and adds a deprecation notice, optionally with a passed alternative route suggestion.

func FormatLastModified 

func FormatLastModified(t time.Time) string

FormatLastModified trims the time string and formats it according to RFC1123.

func GenericCreate 

func GenericCreate(val GenericCreator) (error, error, int)

GenericCreate does a Create (POST) for the given GenericCreator object and type. This exists as a generic function, for the common use case of a single "id" key and a lastUpdated field.

func GenericCreateNameBasedID 

func GenericCreateNameBasedID(val GenericCreator) (error, error, int)

GenericCreateNameBasedID does a Create (POST) for the given GenericCreator object and type. This exists as a generic function, for the use case of a single "name" key (not a numerical "id" key) and a lastUpdated field.

func GenericDelete 

func GenericDelete(val GenericDeleter) (error, error, int)

GenericDelete does a Delete (DELETE) for the given GenericDeleter object and type. This exists as a generic function, for the common use case of a simple delete with query parameters defined in the sqlx struct tags.

func GenericOptionsDelete 

func GenericOptionsDelete(val GenericOptionsDeleter) (error, error, int)

GenericOptionsDelete does a Delete (DELETE) for the given GenericOptionsDeleter object and type. Unlike GenericDelete, there is no requirement that a specific key is used as the parameter. GenericOptionsDeleter.DeleteKeyOptions() specifies which keys can be used.

func GenericRead 

func GenericRead(h http.Header, val GenericReader, useIMS bool) ([]interface{}, error, error, int, *time.Time)

func GenericUpdate 

func GenericUpdate(h http.Header, val GenericUpdater) (error, error, int)

GenericUpdate handles the common update case, where the update returns the new last_modified time.

func GetAsyncStatus 

func GetAsyncStatus(w http.ResponseWriter, r *http.Request)

GetAsyncStatus returns the status of an asynchronous job.

func GetCombinedParams 

func GetCombinedParams(r *http.Request) (map[string]string, error)

func GetConfig 

func GetConfig(ctx context.Context) (*config.Config, error)

func GetDB 

func GetDB(ctx context.Context) (*sqlx.DB, error)

GetDB returns the database from the context. This should very rarely be needed, rather `NewInfo` should always be used to get a transaction, except in extenuating circumstances.

func GetIntKey 

func GetIntKey(s string) (interface{}, error)

func GetLastUpdated 

func GetLastUpdated(tx *sqlx.Tx, ID int, tableName string) (*time.Time, bool, error)

GetLastUpdated checks for the resource by ID in the database, and returns its last_updated timestamp, if available.

func GetLastUpdatedByName 

func GetLastUpdatedByName(tx *sqlx.Tx, name string, tableName string) (*time.Time, bool, error)

GetLastUpdatedByName checks for the resource by name in the database, and returns its last_updated timestamp, if available.

func GetPathParams 

func GetPathParams(ctx context.Context) (map[string]string, error)

func GetStringKey 

func GetStringKey(s string) (interface{}, error)

func GetTrafficVault 

func GetTrafficVault(ctx context.Context) (trafficvault.TrafficVault, error)

func GetUserFromReq 

func GetUserFromReq(w http.ResponseWriter, r *http.Request, secret string) (auth.CurrentUser, error, error, int)

GetUserFromReq returns the current user, any user error, any system error, and an error code to be returned if either error was not nil. This also uses the given ResponseWriter to refresh the cookie, if it was valid.

func GoneHandler 

func GoneHandler(w http.ResponseWriter, r *http.Request)

GoneHandler is an http.Handler function that just writes a 410 Gone response back to the client, along with an error-level alert stating that the endpoint is no longer available.

func HandleDeprecatedErr 

func HandleDeprecatedErr(w http.ResponseWriter, r *http.Request, tx *sql.Tx, statusCode int, userErr error, sysErr error, alternative *string)

HandleDeprecatedErr handles an API error, adding a deprecation alert, rolling back the transaction, writing the given statusCode and userErr to the user, and logging the sysErr. If userErr is nil, the text of the HTTP statusCode is written.

The alternative may be nil if there is no alternative and the deprecation message will be selected appropriately.

The tx may be nil, if there is no transaction. Passing a nil tx is strongly discouraged if a transaction exists, because it will result in copy-paste errors for the common APIInfo use case.

This is a helper for the common case; not using this in unusual cases is perfectly acceptable.

func HandleErr 

func HandleErr(w http.ResponseWriter, r *http.Request, tx *sql.Tx, statusCode int, userErr error, sysErr error)

HandleErr handles an API error, rolling back the transaction, writing the given statusCode and userErr to the user, and logging the sysErr. If userErr is nil, the text of the HTTP statusCode is written.

The tx may be nil, if there is no transaction. Passing a nil tx is strongly discouraged if a transaction exists, because it will result in copy-paste errors for the common APIInfo use case.

This is a helper for the common case; not using this in unusual cases is perfectly acceptable.

func HandleErrOptionalDeprecation 

func HandleErrOptionalDeprecation(w http.ResponseWriter, r *http.Request, tx *sql.Tx, statusCode int, userErr error, sysErr error, deprecated bool, alternative *string)

func InsertAsyncStatus 

func InsertAsyncStatus(tx *sql.Tx, message string) (int, int, error, error)

InsertAsyncStatus inserts a new status for an asynchronous job.

func IntParams 

func IntParams(params map[string]string, intParamNames []string) (map[string]int, error)

IntParams parses integer parameters, and returns map of the given params, or an error if any integer param is not an integer. The intParams may be nil if no integer parameters are required. Note this does not check existence; if an integer paramter is required, it should be included in the requiredParams given to NewInfo. This is a helper for the common case; not using this in unusual cases is perfectly acceptable.

func IsBool 

func IsBool(s string) error

func IsInt 

func IsInt(s string) error

func IsUnmodified 

func IsUnmodified(h http.Header, lastUpdated time.Time) bool

IsUnmodified returns a boolean, saying whether or not the resource in question was modified since the time specified in the headers.

func LogErr 

func LogErr(r *http.Request, errCode int, userErr error, sysErr error) error

LogErr handles the logging of errors and setting up possibly nil errors without actually writing anything to a http.ResponseWriter, unlike handleSimpleErr. It returns the userErr which will be initialized to the http.StatusText of errCode if it was passed as nil - otherwise left alone.

func LoginAuth 

func LoginAuth(identity, username, password, host string) smtp.Auth

func ParamsHaveRequired 

func ParamsHaveRequired(params map[string]string, required []string) error

ParamsHaveRequired checks that params have all the required parameters, and returns nil on success, or an error providing information on which params are missing.

func Parse 

func Parse(r io.Reader, tx *sql.Tx, v ParseValidator) error

Parse decodes a JSON object from r into v, validating and sanitizing the input. Use this function instead of the json package when writing API endpoints to safely decode and validate PUT and POST requests.

TODO: change to take data loaded from db, to remove sql from tc package.

func ParseDBError 

func ParseDBError(ierr error) (error, error, int)

ParseDBError parses pq errors for database constraint violations, and returns the (userErr, sysErr, httpCode) format expected by the API helpers.

func ReadHandler 

func ReadHandler(reader Reader) http.HandlerFunc

ReadHandler creates a handler function from the pointer to a struct implementing the Reader interface 

this handler retrieves the user from the context
combines the path and query parameters
produces the proper status code based on the error code returned
marshals the structs returned into the proper response json

func RespWriter 

func RespWriter(w http.ResponseWriter, r *http.Request, tx *sql.Tx) func(v interface{}, err error)

RespWriter is a helper to allow a one-line response, for endpoints with a function that returns the object that needs to be written and an error. This is a helper for the common case; not using this in unusual cases is perfectly acceptable.

func RespWriterVals 

func RespWriterVals(w http.ResponseWriter, r *http.Request, tx *sql.Tx, vals map[string]interface{}) func(v interface{}, err error)

RespWriterVals is like RespWriter, but also takes a map of root-level values to write. The API most commonly needs these for meta-parameters, like size, limit, and orderby. This is a helper for the common case; not using this in unusual cases is perfectly acceptable.

func SendEmailFromTemplate 

func SendEmailFromTemplate(config config.Config, header string, data interface{}, templateFile string, toEmail string) (int, error, error)

SendEmailFromTemplate allows a user to input an html template to format an email. It parses the template and creates a message before calling the SendMail method. SendEmailFromTemplate returns (in order) an HTTP status code, a user-friendly error, and an error fit for logging to system error logs. If either the user or system error is non-nil, the operation failed, and the HTTP status code indicates the type of failure.

func SendMail 

func SendMail(to rfc.EmailAddress, msg []byte, cfg *config.Config) (int, error, error)

SendMail sends an email msg to the address identified by to. The msg parameter should be an RFC822-style email with headers first, a blank line, and then the message body. The lines of msg should be CRLF terminated. The msg headers should usually include fields such as "From", "To", "Subject", and "Cc". Sending "Bcc" messages is accomplished by including an email address in the to parameter but not including it in the msg headers. The cfg parameter is used to set things like the "From" field, as well as for connection and authentication with an external SMTP server. SendMail returns (in order) an HTTP status code, a user-friendly error, and an error fit for logging to system error logs. If either the user or system error is non-nil, the operation failed, and the HTTP status code indicates the type of failure.

func SetLastModifiedHeader 

func SetLastModifiedHeader(r *http.Request, useIMS bool) bool

SetLastModifiedHeader sets the Last-Modified header in case the "useIMS" is set to true in the config, and if there is an "If-Modified-Since" header in the incoming request

func StripParamJSON 

func StripParamJSON(params map[string]string) map[string]string

StripParamJSON removes ".json" trailing any parameter value, and returns the modified params. This allows the API handlers to transparently accept /id.json routes, as allowed by the 1.x API.

func TryIfModifiedSinceQuery 

func TryIfModifiedSinceQuery(val GenericReader, h http.Header, where string, orderBy string, pagination string, queryValues map[string]interface{}) (bool, time.Time)

TryIfModifiedSinceQuery checks to see the max time that an entity was changed, and then returns a boolean (which tells us whether or not to run the main query for the endpoint) along with the max time If the returned boolean is false, there is no need to run the main query for the GET API endpoint, and we return a 304 status

func UpdateAsyncStatus 

func UpdateAsyncStatus(db *sqlx.DB, newStatus string, newMessage string, asyncStatusId int, finished bool) error

UpdateAsyncStatus updates the status table for an asynchronous job.

func UpdateHandler 

func UpdateHandler(updater Updater) http.HandlerFunc

UpdateHandler creates a handler function from the pointer to a struct implementing the Updater interface 

this generic handler encapsulates the logic for handling:
*fetching the id from the path parameter
*current user
*decoding and validating the struct
*change log entry
*forming and writing the body over the wire

func WriteAlerts 

func WriteAlerts(w http.ResponseWriter, r *http.Request, code int, alerts tc.Alerts)

func WriteAlertsObj 

func WriteAlertsObj(w http.ResponseWriter, r *http.Request, code int, alerts tc.Alerts, obj interface{})

func WriteAndLogErr 

func WriteAndLogErr(w http.ResponseWriter, r *http.Request, bts []byte)

WriteAndLogErr writes the response and logs a warning if an error occurs. This should be used in favor of simply calling w.Write() so that errors are properly logged for troubleshooting.

func WriteIMSHitResp 

func WriteIMSHitResp(w http.ResponseWriter, r *http.Request, t time.Time)

WriteIMSHitResp writes a response to 'w' for an IMS request "hit", using the passed time as the Last-Modified date.

func WriteResp 

func WriteResp(w http.ResponseWriter, r *http.Request, v interface{})

WriteResp takes any object, serializes it as JSON, and writes that to w.

Any errors are logged and written to w as alerts (if applicable). This is a helper for the common case; not using this in unusual cases is perfectly acceptable.

func WriteRespAlert 

func WriteRespAlert(w http.ResponseWriter, r *http.Request, level tc.AlertLevel, msg string)

WriteRespAlert creates an alert, serializes it as JSON, and writes that to w.

Any errors are logged and written to w as alerts (if applicable). This is a helper for the common case; not using this in unusual cases is perfectly acceptable.

func WriteRespAlertNotFound 

func WriteRespAlertNotFound(w http.ResponseWriter, r *http.Request)

WriteRespAlertNotFound creates an alert indicating that the resource was not found and writes that to w.

func WriteRespAlertObj 

func WriteRespAlertObj(w http.ResponseWriter, r *http.Request, level tc.AlertLevel, msg string, obj interface{})

WriteRespAlertObj Writes the given alert, and the given response object. This is a helper for the common case; not using this in unusual cases is perfectly acceptable.

func WriteRespRaw 

func WriteRespRaw(w http.ResponseWriter, r *http.Request, v interface{})

WriteRespRaw acts like WriteResp, but doesn't wrap the object in a `{"response":` object. This should be used to respond with endpoints which don't wrap their response in a "response" object.

func WriteRespVals 

func WriteRespVals(w http.ResponseWriter, r *http.Request, v interface{}, vals map[string]interface{})

WriteRespVals is like WriteResp, but also takes a map of root-level values to write. The API most commonly needs these for meta-parameters, like size, limit, and orderby. This is a helper for the common case; not using this in unusual cases is perfectly acceptable.

func WriteRespWithSummary 

func WriteRespWithSummary(w http.ResponseWriter, r *http.Request, v interface{}, count uint64)

WriteRespWithSummary writes a JSON-encoded representation of an arbitrary object to the provided writer, and cleans up the corresponding request object. It also provides a "summary" section to the response object that contains the given "count".

Types

type APIInfo 

type APIInfo struct {
	Params    map[string]string
	IntParams map[string]int
	User      *auth.CurrentUser
	ReqID     uint64
	Version   *Version
	Tx        *sqlx.Tx
	CancelTx  context.CancelFunc
	Vault     trafficvault.TrafficVault
	Config    *config.Config
	// contains filtered or unexported fields
}

func NewInfo 

func NewInfo(r *http.Request, requiredParams []string, intParamNames []string) (*APIInfo, error, error, int)

NewInfo get and returns the context info needed by handlers. It also returns any user error, any system error, and the status code which should be returned to the client if an error occurred.

It is encouraged to call APIInfo.Tx.Tx.Commit() manually when all queries are finished, to release database resources early, and also to return an error to the user if the commit failed.

NewInfo guarantees the returned APIInfo.Tx is non-nil and APIInfo.Tx.Tx is nil or valid, even if a returned error is not nil. Hence, it is safe to pass the Tx.Tx to HandleErr when this returns errors.

Close() must be called to free resources, and should be called in a defer immediately after NewInfo(), to finish the transaction.

Example: 

func handler(w http.ResponseWriter, r *http.Request) {
  inf, userErr, sysErr, errCode := api.NewInfo(r, nil, nil)
  if userErr != nil || sysErr != nil {
    api.HandleErr(w, r, inf.Tx.Tx, errCode, userErr, sysErr)
    return
  }
  defer inf.Close()

  respObj, err := finalDatabaseOperation(inf.Tx)
  if err != nil {
    api.HandleErr(w, r, inf.Tx.Tx, http.StatusInternalServerError, nil, errors.New("final db op: " + err.Error()))
    return
  }
  if err := inf.Tx.Tx.Commit(); err != nil {
    api.HandleErr(w, r, inf.Tx.Tx, http.StatusInternalServerError, nil, errors.New("committing transaction: " + err.Error()))
    return
  }
  api.WriteResp(w, r, respObj)
}

func (APIInfo) CheckPrecondition 

func (inf APIInfo) CheckPrecondition(query string, args ...interface{}) (int, error, error)

CheckPrecondition checks a request's "preconditions" - its If-Match and If-Unmodified-Since headers versus the last updated time of the requested object(s), and returns (in order), an HTTP response code appropriate for the precondition check results, a user-safe error that should be returned to clients, and a server-side error that should be logged. Callers must pass in a query that will return one row containing one column that is the representative date/time of the last update of the requested object(s), and optionally any values for placeholder arguments in the query.

func (*APIInfo) Close 

func (inf *APIInfo) Close()

Close implements the io.Closer interface. It should be called in a defer immediately after NewInfo().

Close will commit the transaction, if it hasn't been rolled back.

func (APIInfo) CreateChangeLog 

func (inf APIInfo) CreateChangeLog(msg string)

CreateChangeLog creates a new changelog message at the APICHANGE level for the current user.

func (*APIInfo) CreateInfluxClient 

func (inf *APIInfo) CreateInfluxClient() (*influx.Client, error)

CreateInfluxClient constructs and returns an InfluxDB HTTP client, if enabled and when possible. The error this returns should not be exposed to the user; it's for logging purposes only.

If Influx connections are not enabled, this will return `nil` - but also no error. It is expected that the caller will handle this situation appropriately.

func (*APIInfo) IsResourceAuthorizedToCurrentUser 

func (inf *APIInfo) IsResourceAuthorizedToCurrentUser(resourceTenantID int) (bool, error)

IsResourceAuthorizedToCurrentUser is a convenience method used to call github.com/apache/trafficcontrol/traffic_ops/traffic_ops_golang/tenant.IsResourceAuthorizedToUserTx using an APIInfo structure to provide the current user and database transaction.

func (*APIInfo) SendMail 

func (inf *APIInfo) SendMail(to rfc.EmailAddress, msg []byte) (int, error, error)

SendMail is a convenience method used to call SendMail using an APIInfo structure's configuration.

func (APIInfo) UseIMS 

func (inf APIInfo) UseIMS() bool

UseIMS returns whether or not If-Modified-Since constraints should be used to service the given request.

type APIInfoImpl 

type APIInfoImpl struct {
	ReqInfo *APIInfo
}

APIInfoImpl implements APIInfo via the APIInfoer interface

func (APIInfoImpl) APIInfo 

func (val APIInfoImpl) APIInfo() *APIInfo

func (*APIInfoImpl) SetInfo 

func (val *APIInfoImpl) SetInfo(inf *APIInfo)

type APIInfoer 

type APIInfoer interface {
	SetInfo(*APIInfo)
	APIInfo() *APIInfo
}

APIInfoer is an interface that guarantees the existance of a variable through its setters and getters. Every CRUD operation uses this login session context

type APIResponse 

type APIResponse struct {
	Response interface{} `json:"response"`
}

type APIResponseWithSummary 

type APIResponseWithSummary struct {
	Response interface{} `json:"response"`
	Summary  struct {
		Count uint64 `json:"count"`
	} `json:"summary"`
}

type AlertsResponse 

type AlertsResponse interface {
	// GetAlerts retrieves an array of alerts that were generated over the course of handling an endpoint.
	GetAlerts() tc.Alerts
}

type CRUDer 

type CRUDer interface {
	Create() (error, error, int)
	Read(h http.Header, useIMS bool) ([]interface{}, error, error, int, *time.Time)
	Update(http.Header) (error, error, int)
	Delete() (error, error, int)
	APIInfoer
	Identifier
	Validator
}

type ChangeLog 

type ChangeLog struct {
	ID          int          `json:"id" db:"id"`
	Level       string       `json:"level" db:"level"`
	Message     string       `json:"message" db:"message"`
	TMUser      int          `json:"tmUser" db:"tm_user"`
	TicketNum   string       `json:"ticketNum" db:"ticketnum"`
	LastUpdated tc.TimeNoMod `json:"lastUpdated" db:"last_updated"`
}

type ChangeLogger 

type ChangeLogger interface {
	ChangeLogMessage(action string) (string, error)
}

type Creator 

type Creator interface {
	// Create returns any user error, any system error, and the HTTP error code to be returned if there was an error.
	Create() (error, error, int)
	APIInfoer
	Identifier
	Validator
}

type Deleter 

type Deleter interface {
	// Delete returns any user error, any system error, and the HTTP error code to be returned if there was an error.
	Delete() (error, error, int)
	APIInfoer
	Identifier
}

type GenericCreator 

type GenericCreator interface {
	GetType() string
	APIInfo() *APIInfo
	SetKeys(map[string]interface{})
	SetLastUpdated(tc.TimeNoMod)
	InsertQuery() string
}

type GenericDeleter 

type GenericDeleter interface {
	GetType() string
	APIInfo() *APIInfo
	DeleteQuery() string
}

type GenericOptionsDeleter 

type GenericOptionsDeleter interface {
	GetType() string
	APIInfo() *APIInfo
	DeleteKeyOptions() map[string]dbhelpers.WhereColumnInfo
	DeleteQueryBase() string
}

GenericOptionsDeleter can use any key listed in DeleteKeyOptions() to delete a resource.

type GenericReader 

type GenericReader interface {
	GetType() string
	APIInfo() *APIInfo
	ParamColumns() map[string]dbhelpers.WhereColumnInfo
	NewReadObj() interface{}
	SelectQuery() string
	SelectMaxLastUpdatedQuery(where string, orderBy string, pagination string, tableName string) string
}

type GenericUpdater 

type GenericUpdater interface {
	GetType() string
	APIInfo() *APIInfo
	SetLastUpdated(tc.TimeNoMod)
	UpdateQuery() string
	GetLastUpdated() (*time.Time, bool, error)
}

type Identifier 

type Identifier interface {

	// Getters and Setters for key data
	// The current common case is a single numerical id
	SetKeys(map[string]interface{})
	GetKeys() (map[string]interface{}, bool)

	// GetType gives the name of the implementing struct
	GetType() string

	// GetAuditName returns the name of an object instance. If no name is availible, the id should be returned. "unknown" is the final case
	GetAuditName() string

	// This should define the key getters and setters
	GetKeyFieldsInfo() []KeyFieldInfo
}

type KeyFieldInfo 

type KeyFieldInfo struct {
	Field string
	Func  func(string) (interface{}, error)
}

type MultipleCreator 

type MultipleCreator interface {
	AllowMultipleCreates() bool
}

MultipleCreator indicates whether an object using the shared handlers allows an array of objects in the POST

type OptionsDeleter 

type OptionsDeleter interface {
	// OptionsDelete returns any user error, any system error, and the HTTP error code to be returned if there was an
	// error.
	OptionsDelete() (error, error, int)
	APIInfoer
	Identifier
	DeleteKeyOptions() map[string]dbhelpers.WhereColumnInfo
}

OptionsDeleter calls the OptionsDelete() generic CRUD function, unlike Deleter, which calls Delete().

type ParseValidator 

type ParseValidator interface {
	Validate(tx *sql.Tx) error
}

ParseValidator objects can make use of api.Parse to handle parsing and validating at the same time.

TODO: Rework validation to be able to return system-level errors

type Reader 

type Reader interface {
	// Read returns the object to write to the user, any user error, any system error, and the HTTP error code to be returned if there was an error.
	Read(h http.Header, useIMS bool) ([]interface{}, error, error, int, *time.Time)
	APIInfoer
}

type Tenantable 

type Tenantable interface {
	IsTenantAuthorized(user *auth.CurrentUser) (bool, error)
}

type Updater 

type Updater interface {
	// Update returns any user error, any system error, and the HTTP error code to be returned if there was an error.
	Update(h http.Header) (error, error, int)
	APIInfoer
	Identifier
	Validator
}

type Validator 

type Validator interface {
	Validate() (error, error)
}

Validator objects return user and system errors based on validation rules defined by that object.

type Version 

type Version struct {
	Major uint64
	Minor uint64
}

func GetRequestedAPIVersion 

func GetRequestedAPIVersion(path string) *Version

GetRequestedAPIVersion returns a pointer to the requested API Version from the request if it exists or returns nil otherwise.

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