Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func ConstructMetadataDBName

func ConstructMetadataDBName(dbName string) string

ConstructMetadataDBName truncates the db name to couchdb allowed length to construct the metadataDBName

func ConstructNamespaceDBName

func ConstructNamespaceDBName(chainName, namespace string) string

ConstructNamespaceDBName truncates db name to couchdb allowed length to construct the namespaceDBName

func CreateSystemDatabasesIfNotExist

func CreateSystemDatabasesIfNotExist(couchInstance *CouchInstance) error

CreateSystemDatabasesIfNotExist - creates the system databases if they do not exist

func IsJSON

func IsJSON(s string) bool

IsJSON tests a string to determine if a valid JSON

Types

type AttachmentInfo

type AttachmentInfo struct {
	Name            string
	ContentType     string `json:"content_type"`
	Length          uint64
	AttachmentBytes []byte `json:"data"`
}

AttachmentInfo contains the definition for an attached file for couchdb

type Base64Attachment

type Base64Attachment struct {
	ContentType    string `json:"content_type"`
	AttachmentData string `json:"data"`
}

Base64Attachment contains the definition for an attached file for couchdb

type BatchRetrieveDocMetadataResponse

type BatchRetrieveDocMetadataResponse struct {
	Rows []struct {
		ID          string `json:"id"`
		DocMetadata struct {
			ID      string `json:"_id"`
			Rev     string `json:"_rev"`
			Version string `json:"~version"`
		} `json:"doc"`
	} `json:"rows"`
}

BatchRetrieveDocMetadataResponse is used for processing REST batch responses from CouchDB

type BatchUpdateResponse

type BatchUpdateResponse struct {
	ID     string `json:"id"`
	Error  string `json:"error"`
	Reason string `json:"reason"`
	Ok     bool   `json:"ok"`
	Rev    string `json:"rev"`
}

BatchUpdateResponse defines a structure for batch update response

type ConnectionInfo

type ConnectionInfo struct {
	Couchdb string `json:"couchdb"`
	Version string `json:"version"`
	Vendor  struct {
		Name string `json:"name"`
	} `json:"vendor"`
}

ConnectionInfo is a structure for capturing the database info and version

type CouchConnectionDef

type CouchConnectionDef struct {
	URL                   string
	Username              string
	Password              string
	MaxRetries            int
	MaxRetriesOnStartup   int
	RequestTimeout        time.Duration
	CreateGlobalChangesDB bool
}

CouchConnectionDef contains parameters

func CreateConnectionDefinition

func CreateConnectionDefinition(couchDBAddress, username, password string, maxRetries,
	maxRetriesOnStartup int, requestTimeout time.Duration, createGlobalChangesDB bool) (*CouchConnectionDef, error)

CreateConnectionDefinition for a new client connection

type CouchDBDef

type CouchDBDef struct {
	URL                   string
	Username              string
	Password              string
	MaxRetries            int
	MaxRetriesOnStartup   int
	RequestTimeout        time.Duration
	CreateGlobalChangesDB bool
}

CouchDBDef contains parameters

func GetCouchDBDefinition

func GetCouchDBDefinition() *CouchDBDef

GetCouchDBDefinition exposes the useCouchDB variable

type CouchDatabase

type CouchDatabase struct {
	CouchInstance    *CouchInstance //connection configuration
	DBName           string
	IndexWarmCounter int
}

CouchDatabase represents a database within a CouchDB instance

func CreateCouchDatabase

func CreateCouchDatabase(couchInstance *CouchInstance, dbName string) (*CouchDatabase, error)

CreateCouchDatabase creates a CouchDB database object, as well as the underlying database if it does not exist

func (*CouchDatabase) ApplyDatabaseSecurity

func (dbclient *CouchDatabase) ApplyDatabaseSecurity(databaseSecurity *DatabaseSecurity) error

ApplyDatabaseSecurity method provides function to update the security config for a database

func (*CouchDatabase) BatchRetrieveDocumentMetadata

func (dbclient *CouchDatabase) BatchRetrieveDocumentMetadata(keys []string) ([]*DocMetadata, error)

BatchRetrieveDocumentMetadata - batch method to retrieve document metadata for a set of keys, including ID, couchdb revision number, and ledger version

func (*CouchDatabase) BatchUpdateDocuments

func (dbclient *CouchDatabase) BatchUpdateDocuments(documents []*CouchDoc) ([]*BatchUpdateResponse, error)

BatchUpdateDocuments - batch method to batch update documents

func (*CouchDatabase) CreateDatabaseIfNotExist

func (dbclient *CouchDatabase) CreateDatabaseIfNotExist() error

CreateDatabaseIfNotExist method provides function to create database

func (*CouchDatabase) CreateIndex

func (dbclient *CouchDatabase) CreateIndex(indexdefinition string) (*CreateIndexResponse, error)

CreateIndex method provides a function creating an index

func (*CouchDatabase) DeleteDoc

func (dbclient *CouchDatabase) DeleteDoc(id, rev string) error

DeleteDoc method provides function to delete a document from the database by id

func (*CouchDatabase) DeleteIndex

func (dbclient *CouchDatabase) DeleteIndex(designdoc, indexname string) error

DeleteIndex method provides a function deleting an index

func (*CouchDatabase) DropDatabase

func (dbclient *CouchDatabase) DropDatabase() (*DBOperationResponse, error)

DropDatabase provides method to drop an existing database

func (*CouchDatabase) EnsureFullCommit

func (dbclient *CouchDatabase) EnsureFullCommit() (*DBOperationResponse, error)

EnsureFullCommit calls _ensure_full_commit for explicit fsync

func (*CouchDatabase) GetDatabaseInfo

func (dbclient *CouchDatabase) GetDatabaseInfo() (*DBInfo, *DBReturn, error)

GetDatabaseInfo method provides function to retrieve database information

func (*CouchDatabase) GetDatabaseSecurity

func (dbclient *CouchDatabase) GetDatabaseSecurity() (*DatabaseSecurity, error)

GetDatabaseSecurity method provides function to retrieve the security config for a database

func (*CouchDatabase) ListIndex

func (dbclient *CouchDatabase) ListIndex() ([]*IndexResult, error)

ListIndex method lists the defined indexes for a database

func (*CouchDatabase) QueryDocuments

func (dbclient *CouchDatabase) QueryDocuments(query string) ([]*QueryResult, string, error)

QueryDocuments method provides function for processing a query

func (*CouchDatabase) ReadDoc

func (dbclient *CouchDatabase) ReadDoc(id string) (*CouchDoc, string, error)

ReadDoc method provides function to retrieve a document and its revision from the database by id

func (*CouchDatabase) ReadDocRange

func (dbclient *CouchDatabase) ReadDocRange(startKey, endKey string, limit int32) ([]*QueryResult, string, error)

ReadDocRange method provides function to a range of documents based on the start and end keys startKey and endKey can also be empty strings. If startKey and endKey are empty, all documents are returned This function provides a limit option to specify the max number of entries and is supplied by config. Skip is reserved for possible future future use.

func (*CouchDatabase) SaveDoc

func (dbclient *CouchDatabase) SaveDoc(id string, rev string, couchDoc *CouchDoc) (string, error)

SaveDoc method provides a function to save a document, id and byte array

func (*CouchDatabase) WarmIndex

func (dbclient *CouchDatabase) WarmIndex(designdoc, indexname string) error

WarmIndex method provides a function for warming a single index

func (*CouchDatabase) WarmIndexAllIndexes

func (dbclient *CouchDatabase) WarmIndexAllIndexes() error

WarmIndexAllIndexes method provides a function for warming all indexes for a database

type CouchDoc

type CouchDoc struct {
	JSONValue   []byte
	Attachments []*AttachmentInfo
}

CouchDoc defines the structure for a JSON document value

type CouchInstance

type CouchInstance struct {
	// contains filtered or unexported fields
}

CouchInstance represents a CouchDB instance

func CreateCouchInstance

func CreateCouchInstance(couchDBConnectURL, id, pw string, maxRetries,
	maxRetriesOnStartup int, connectionTimeout time.Duration, createGlobalChangesDB bool, metricsProvider metrics.Provider) (*CouchInstance, error)

CreateCouchInstance creates a CouchDB instance

func (*CouchInstance) HealthCheck

func (couchInstance *CouchInstance) HealthCheck(ctx context.Context) error

HealthCheck checks if the peer is able to communicate with CouchDB

func (*CouchInstance) VerifyCouchConfig

func (couchInstance *CouchInstance) VerifyCouchConfig() (*ConnectionInfo, *DBReturn, error)

VerifyCouchConfig method provides function to verify the connection information

type CreateIndexResponse

type CreateIndexResponse struct {
	Result string `json:"result"`
	ID     string `json:"id"`
	Name   string `json:"name"`
}

CreateIndexResponse contains an the index creation response from CouchDB

type DBInfo

type DBInfo struct {
	DbName string `json:"db_name"`
	Sizes  struct {
		File     int `json:"file"`
		External int `json:"external"`
		Active   int `json:"active"`
	} `json:"sizes"`
	Other struct {
		DataSize int `json:"data_size"`
	} `json:"other"`
	DocDelCount       int    `json:"doc_del_count"`
	DocCount          int    `json:"doc_count"`
	DiskSize          int    `json:"disk_size"`
	DiskFormatVersion int    `json:"disk_format_version"`
	DataSize          int    `json:"data_size"`
	CompactRunning    bool   `json:"compact_running"`
	InstanceStartTime string `json:"instance_start_time"`
}

DBInfo is body for database information.

type DBOperationResponse

type DBOperationResponse struct {
	Ok bool
	// contains filtered or unexported fields
}

DBOperationResponse is body for successful database calls.

type DBReturn

type DBReturn struct {
	StatusCode int    `json:"status_code"`
	Error      string `json:"error"`
	Reason     string `json:"reason"`
}

DBReturn contains an error reported by CouchDB

type DatabaseSecurity

type DatabaseSecurity struct {
	Admins struct {
		Names []string `json:"names"`
		Roles []string `json:"roles"`
	} `json:"admins"`
	Members struct {
		Names []string `json:"names"`
		Roles []string `json:"roles"`
	} `json:"members"`
}

DatabaseSecurity contains the definition for CouchDB database security

type DocID

type DocID struct {
	ID string `json:"_id"`
}

DocID is a minimal structure for capturing the ID from a query result

type DocMetadata

type DocMetadata struct {
	ID              string                     `json:"_id"`
	Rev             string                     `json:"_rev"`
	Version         string                     `json:"~version"`
	AttachmentsInfo map[string]*AttachmentInfo `json:"_attachments"`
}

DocMetadata is used for capturing CouchDB document header info, used to capture id, version, rev and attachments returned in the query from CouchDB

type FileDetails

type FileDetails struct {
	Follows     bool   `json:"follows"`
	ContentType string `json:"content_type"`
	Length      int    `json:"length"`
}

FileDetails defines the structure needed to send an attachment to couchdb

type IndexResult

type IndexResult struct {
	DesignDocument string `json:"designdoc"`
	Name           string `json:"name"`
	Definition     string `json:"definition"`
}

IndexResult contains the definition for a couchdb index

type QueryResponse

type QueryResponse struct {
	Warning  string            `json:"warning"`
	Docs     []json.RawMessage `json:"docs"`
	Bookmark string            `json:"bookmark"`
}

QueryResponse is used for processing REST query responses from CouchDB

type QueryResult

type QueryResult struct {
	ID          string
	Value       []byte
	Attachments []*AttachmentInfo
}

QueryResult is used for returning query results from CouchDB

type RangeQueryResponse

type RangeQueryResponse struct {
	TotalRows int32 `json:"total_rows"`
	Offset    int32 `json:"offset"`
	Rows      []struct {
		ID    string `json:"id"`
		Key   string `json:"key"`
		Value struct {
			Rev string `json:"rev"`
		} `json:"value"`
		Doc json.RawMessage `json:"doc"`
	} `json:"rows"`
}

RangeQueryResponse is used for processing REST range query responses from CouchDB