instance

package
v1.0.1-pre Latest Latest
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 Go to latest Published: Jun 29, 2022 License: MIT Imports: 28 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func Abs 

func Abs(c geneos.Instance, file string) (path string)

given a filename or path, prepend the instance home directory if not absolute, and clean

func AllNames 

func AllNames(h *host.Host, ct *geneos.Component) (names []string)

Return a slice of all instance names for a given component. No checking is done to validate that the directory is a populated instance.

func BuildCmd 

func BuildCmd(c geneos.Instance) (cmd *exec.Cmd, env []string)

buildCmd gathers the path to the binary, arguments and any environment variables for an instance and returns an exec.Cmd, almost ready for execution. Callers will add more details such as working directories, user and group etc.

func Clean 

func Clean(c geneos.Instance, options ...geneos.GeneosOptions) (err error)

func ConfigPathWithExt 

func ConfigPathWithExt(c geneos.Instance, extension string) (path string)

func CopyInstance 

func CopyInstance(ct *geneos.Component, srcname, dstname string, remove bool) (err error)

func CreateCert 

func CreateCert(c geneos.Instance) (err error)

create a new certificate for an instance

this also creates a new private key

skip if certificate exists (no expiry check)

func CreateCertKey 

func CreateCertKey(template, parent *x509.Certificate, parentKey *rsa.PrivateKey, existingKey *rsa.PrivateKey) (cert *x509.Certificate, key *rsa.PrivateKey, err error)

wrapper to create a new certificate given the sign cert and private key and an optional private key to (re)use for the created certificate itself. returns a certificate and private key

func CreateConfigFromTemplate 

func CreateConfigFromTemplate(c geneos.Instance, path string, name string, defaultTemplate []byte) (err error)

load templates from TYPE/templates/[tmpl]* and parse it using the instance data write it out to a single file. If tmpl is empty, load all files

func Files 

func Files(c geneos.Instance) (links map[int]string)

func ForAll 

func ForAll(ct *geneos.Component, fn func(geneos.Instance, []string) error, args []string, params []string) (err error)

given a component type and a slice of args, call the function for each arg

try to use go routines here - mutexes required

func Get 

func Get(ct *geneos.Component, name string) (c geneos.Instance, err error)

return an instance of component ct, loads the config. it is an error if the config cannot be loaded

func GetAll 

func GetAll(r *host.Host, ct *geneos.Component) (confs []geneos.Instance)

return a slice of instances for a given component type

func GetPID 

func GetPID(c geneos.Instance) (pid int, err error)

locate a process instance

the component type must be part of the basename of the executable and the component name must be on the command line as an exact and standalone args

walk the /proc directory (local or remote) and find the matching pid this is subject to races, but not much we can do

func GetPIDInfo 

func GetPIDInfo(c geneos.Instance) (pid int, uid uint32, gid uint32, mtime int64, err error)

func GetPorts 

func GetPorts(r *host.Host) (ports map[uint16]*geneos.Component)

get all used ports in config files on a specific remote this will not work for ports assigned in component config files, such as gateway setup or netprobe collection agent

returns a map

func ImportCommons 

func ImportCommons(r *host.Host, ct *geneos.Component, common string, params []string) (filename string, err error)

func ImportFile 

func ImportFile(h *host.Host, home string, user string, source string, options ...geneos.GeneosOptions) (filename string, err error)

func IsDisabled 

func IsDisabled(c geneos.Instance) bool

func LoadConfig 

func LoadConfig(c geneos.Instance) (err error)

loadConfig will load the JSON config file is available, otherwise try to load the "legacy" .rc file

support cache?

error check core values - e.g. Name

func LogFile 

func LogFile(c geneos.Instance) (logfile string)

logdir = LogD relative to Home or absolute

func Match 

func Match(ct *geneos.Component, name string) (c geneos.Instance, err error)

Looks for exactly one matching instance across types and hosts returns Invalid Args if zero of more than 1 match

func MatchAll 

func MatchAll(ct *geneos.Component, name string) (c []geneos.Instance)

construct and return a slice of a/all component types that have a matching name

func MatchKeyValue 

func MatchKeyValue(h *host.Host, ct *geneos.Component, key, value string) (confs []geneos.Instance)

func Migrate 

func Migrate(c geneos.Instance) (err error)

migrate config from .rc to .json, but check first

func NextPort 

func NextPort(r *host.Host, ct *geneos.Component) uint16

given a range, find the first unused port

range is comma or two-dot seperated list of single number, e.g. "7036" min-max inclusive range, e.g. "7036-8036" start- open ended range, e.g. "7041-"

some limits based on https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers

not concurrency safe at this time

func Ports 

func Ports(c geneos.Instance) (ports []int)

func ReadCert 

func ReadCert(c geneos.Instance) (cert *x509.Certificate, err error)

read the instance certificate

func ReadConfig 

func ReadConfig(c geneos.Instance) (err error)

func ReadKey 

func ReadKey(c geneos.Instance) (key *rsa.PrivateKey, err error)

read the instance RSA private key

func ReadRootCert 

func ReadRootCert() (cert *x509.Certificate, err error)

read the rootCA certificate from the installation directory

func ReadSigningCert 

func ReadSigningCert() (cert *x509.Certificate, err error)

read the signing certificate from the installation directory

func RemovePaths 

func RemovePaths(c geneos.Instance, paths string) (err error)

given a pathlist (typically ':') seperated list of paths, remove all files and directories

func ReservedName 

func ReservedName(in string) (ok bool)

separate reserved words and invalid syntax

func SetDefaults 

func SetDefaults(c geneos.Instance, name string) (err error)

SetDefaults() is a common function called by component factory functions to iterate over the component specific instance struct and set the defaults as defined in the 'defaults' struct tags.

func SetExtendedValues 

func SetExtendedValues(c geneos.Instance, x ExtraConfigValues) (changed bool)

XXX abstract this for a general case

func Signal 

func Signal(c geneos.Instance, signal syscall.Signal) (err error)

func SplitName 

func SplitName(in string, defaultHost *host.Host) (ct *geneos.Component, name string, h *host.Host)

given an instance name in the format [TYPE:]NAME[@HOST] and a default host, return a *geneos.Component for the TYPE if given, a string for the NAME and a *host.Host - the latter being either from the name or the default provided

func Start 

func Start(c geneos.Instance) (err error)

func Stop 

func Stop(c geneos.Instance, force bool) (err error)

func ValidInstanceName 

func ValidInstanceName(in string) (ok bool)

return true while a string is considered a valid instance name

used to consume instance names until parameters are then passed down

func Version 

func Version(c geneos.Instance) (base string, underlying string, err error)

return the base package name and the version it links to. if not a link, then return the same follow a limited number of links (10?)

func WriteCert 

func WriteCert(c geneos.Instance, cert *x509.Certificate) (err error)

func WriteConfig 

func WriteConfig(c geneos.Instance) (err error)

write out an instance configuration file. XXX check if existing config is an .rc file and if so rename it after successful write to match migrate

remote configuration files are supported using afero.Fs through viper but rely on host.DialSFTP to dial and cache the client

delete any aliases fields before writing

func WriteConfigValues 

func WriteConfigValues(c geneos.Instance, values map[string]interface{}) error

func WriteKey 

func WriteKey(c geneos.Instance, key *rsa.PrivateKey) (err error)

Types

type ExtraConfigValues 

type ExtraConfigValues struct {
	Includes   IncludeValues
	Gateways   GatewayValues
	Attributes StringSliceValues
	Envs       StringSliceValues
	Variables  VarValues
	Types      StringSliceValues
	Keys       StringSliceValues
}

type GatewayValues 

type GatewayValues map[string]string

gateway - name:port

func (*GatewayValues) Set 

func (i *GatewayValues) Set(value string) error

func (*GatewayValues) String 

func (i *GatewayValues) String() string

func (*GatewayValues) Type 

func (i *GatewayValues) Type() string

type IncludeValues 

type IncludeValues map[string]string

include file - priority:url|path

func (*IncludeValues) Set 

func (i *IncludeValues) Set(value string) error

func (*IncludeValues) String 

func (i *IncludeValues) String() string

func (*IncludeValues) Type 

func (i *IncludeValues) Type() string

type Instance 

type Instance struct {
	geneos.Instance `json:"-"`
	L               *sync.RWMutex     `json:"-"`
	Conf            *viper.Viper      `json:"-"`
	InstanceHost    *host.Host        `json:"-"`
	Component       *geneos.Component `json:"-"`
	ConfigLoaded    bool              `json:"-"`
	Env             []string          `json:",omitempty"`
}

The Instance type is the common data shared by all instance / component types

type StringSliceValues 

type StringSliceValues []string

attribute - name=value

func (*StringSliceValues) Set 

func (i *StringSliceValues) Set(value string) error

func (*StringSliceValues) String 

func (i *StringSliceValues) String() string

func (*StringSliceValues) Type 

func (i *StringSliceValues) Type() string

type VarValues 

type VarValues map[string]string

variables - [TYPE:]NAME=VALUE

func (*VarValues) Set 

func (i *VarValues) Set(value string) error

func (*VarValues) String 

func (i *VarValues) String() string

func (*VarValues) Type 

func (i *VarValues) Type() string

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